HYGROBATIDAE Koch, 1842

Pešić, Vladimir, Smit, Harry, Gerecke, Reinhard & Sabatino, Antonio Di, 2010, The water mites (Acari: Hydrachnidia) of the Balkan peninsula, a revised survey with new records and descriptions of five new taxa 2586, Zootaxa 2586 (1), pp. 1-100 : 37-60

Family HYGROBATIDAE Koch, 1842

Subfamily Hygrobatinae Koch, 1842

Genus Atractides Koch, 1837 Records of undetermined species from the study area: Bulgaria: Petrova (1965).

Atractides (Atractides) allgaier Gerecke, 2003

New records: Bosnia and Hercegovina: YU43 Jahorina Mt. , W from Bare , Rijeka Čemernica, 1000 m a.s.l., 43°46'N 16°30'W, 14.vi.1990 Gerecke (1/1/0); Greece: Achaia, Erymanthos: GR60 Ano Vlassia, riparian spring at stream Selinous, 1000 m a.s.l., 37°57'N 21°47'E, 25.v.1992 Gerecke (1/1/0); GR63 Erymanthos, Ano Vlassia, spring 2 at border of river Selinous, 1000 m a.s.l., 37°57'N 21°47'E, 27.v.1992 Gerecke (2/2/0); GR68 Aroánia, Kato Klitoria Aroanias P, Ag. Vlasios, 500 m a.s.l., 37°52'N 22°12'E, 31.v.1999 Gerecke (0/1/ 0); Kiklades: GR49 Naxos, Apolonas, distanced about 2 km from the northern coast, 80 m a.s.l., 11.v.1990 Potthast (0/1/0) .

Remarks: New for Bosnia and Hercegovina and Greece.

Habitat: Rhithrobiont.

Distribution: Central and SE Europe, Balkan, Asia Minor.

Atractides (Atractides) asticae Petrova, 1968

Records from the study area: Bulgaria: Petrova (1968b, 1971, 1974b).

Habitat: Hyporheobiont.

Distribution: Balkan, known only from the type localities (basin of river Veleka).

Atractides (Atractides) cisternarum (K.Viets, 1935)

Records from the study area: Macedonia: “ Megapus cisternarum “ K. Viets (1935a) ; Bulgaria: Petrova (1976a).

Habitat: Ground-water (hyporheic interstitial as well as deeper layers).

Distribution: South-east Europe.

Atractides (Atractides) denticulatus (Walter, 1947)

New records: Bosnia and Hercegovina : YU43 I Jahorina Mt. , W from Bare, Rijeka Čemernica, 1000 m a.s.l., 43°46´N 16°30´W, 14.vi.1990 Gerecke (2/2/0) .

Records from the study area: Bulgaria: Petrova (1968b, 1971).

Remarks: New for Bosnia and Hercegovina.

Habitat: Hyporheobiont.

Distribution: Central and south-east Europe, England.

Atractides (Atractides) digitatus Lundblad, 1954

New records: Croatia: Karlovac County, River Dobra, moss, 05.viii.2008 Žganec & Gottstein (1/0/0). Remarks: New for the Eastern Mediterranean.

Habitat: Rhithrobiont.

Distribution: Spain, Baltic area (H. Smit, unpublished), Balkan.

Atractides (Atractides) distans (K.Viets, 1914)

New records: Greece: GR44 Makedonia, Nestos-Delta, river course NE Chrysoupolis 1 m a.s.l., RL 42 77, 30.v.1991 Gerecke (0/1/0) .

Records from the study area: Macedonia: “ Megapus distans “ Georgiev (1957) ; Bulgaria: Petrova (1976a).

Remarks: New for Greece.

Habitat: Rhithrobiont.

Distribution: Western Palaearctic.

Atractides (Atractides) fonticolus (K. Viets, 1920)

New records: Montenegro: YU40 Pljevlja, pass Kutusa b. str. N Gorazde, Exp. E, 1250 m a.s.l., CN 63 81, 12.vi.1990 Gerecke (1/1/0); Bar , spring Škurta near village Dobre Vode , 12.v.2005 Pešić (1/2/0); Greece: GRp16 Evia Island , the region of Ochi , Metochi spring, 30.vi.2007 Pešić (0/1/0); Achaia , Erymanthos : GR60 Ano Vlassia river course Selinous , 1000 m a.s.l., 37°57'N 21°47'E, 25.v.1992 Gerecke (0/1/0); GR63 Ano Vlassia , spring 2 at border of river Selinous, 1000 m a.s.l., 37°57'N 21°47'E, 27.v.1992 Gerecke (1/2/1) .

Records from the study area: Croatia: “ Megapus nodipalpis fonticola ” K. Viets (1936) , Pešić (2002f); Montenegro: Pešić (2003g); Macedonia: “ M. fonticola “ Georgiev (1957) , “ Atractides petkovskii “ Schwoerbel (1963) , Pešić (2003g); Bulgaria: “ A. nodipalpis fonticolus , A. nodipalpis saproniensis “ Petrova (1976a) .

Remarks: New for Greece.

Habitat: Crenobiont.

Distribution: Western Palaearctic.

Atractides (Atractides) fissus (Walter, 1927)

New records: Bosnia and Hercegovina : YU45 Zvijezda Planina Mt. , Vareš, springs near Ocevlje pass, 1100 m a.s.l., BP 94 94, 16.v.1990 Gerecke (1/0/0) .

Records from the study area: Montenegro: Pešić (2002d, 2004a).

Remarks: New for Bosnia and Hercegovina.

Habitat: Rhithrobiont; with tedency to colonize higher order streams.

Distribution: Central Europe, Balkan, Poland? ( Gerecke 2003).

Atractides fluviatilis (Szalay, 1929)

Records from the study area: Montenegro: Pešić (1999), Pesic et al. (2004); Serbia: Pesic et al. (2004); Macedonia: “ A. nodipalpis fluviatilis “ Schwoerbel (1963) , Pesic et al. (2004); Bulgaria: “ A. nodipalpis fluviatilis “ Petrova (1976a) .

Rejected records: Croatia: “ Megapus nodipalpis fluviatilis ” K. Viets (1936) , Pešić (2002f), Gerecke (2003). See remarks under A. stankovici sp. nov.

Habitat: Rhithrobiont.

Distribution: W Palaearctic, Iran. Former records of A. fluviatilis require confirmation for a better understanding of its geographical distribution ( Pesic et al. 2004).

Atractides (Atractides) gibberipalpis Piersig, 1898

New records: Croatia: Plitvice lakes area, stream Crna Rijeka, 21.ix.2007 Mičetić (1/0/0), ibid., 27.viii.2007 Mičetić (4/0/0); Bosnia and Hercegovina: YU7 Bitovnja, Nevra Potok (tributary of river Željeznica ), 800 m a.s.l., YJ 36 61, 28.v.1990 Gerecke (0/1/2); Montenegro: YU21 Komovi Mt. , Veruša , springs in beech forest, 1100 m a.s.l., 42°49' N, 17°10' W, 04.vi.1990 Gerecke (1/1/0); YU32 Bjelasica, brook upstream Lubnice, 1300 m a.s.l., 42°40'N 17°23'W, 08.vi.1990 Gerecke (1/1/0); NP “Biogradska Gora”, stream Piva, 1243 m a.s.l., 42°53'N 19°37'E, 26.vii.2001 Pešić (5/2/0); upper part of Morača River near Lje- vište, 42°52'N 19°17'E, 25.x.2004 Pešić (3/17/0); Serbia: YU56 Šar Planina Mt. , Daganović, Straska Reka below Straza, 850 m a.s.l., QC 14 72, 07.vi.1991 Gerecke (1/0/0); Sokobanja, the spring (“Vrelo“) of Moravica river , 390 m a.s.l., 43°37'53.77''N 21°59'9.15''E, 24.ix.2009 Pešić (3/0/0); Macedonia: YU51 Jakupica Planina Mt. , Platiska Reka, stream 5 km of the village, QH 62 82, 05.vi.1991 Gerecke (2/4/0); YU55 Šar Planina Mt. , Popova Šapka, NW Lisec, Exp. NE, 1600 m a.s.l., 42°01'N 20°24'W, 06.vi.1991 Gerecke (0/1/0); YU56 Šar Planina Mt. , Daganović, Strska Reka below Straza, 850 m a.s.l., QL 14 72, 07.vi.1991 Gerecke (0/ 1/1); Greece: GR29 Makedonia, Vemon Pisoderion, affluent of river Ladopotamos , 1200 m a.s.l., 40°47'N 21°24'E, 26.v.1991 Gerecke (1/0/0); Achaia: GR59 Erymanthos, Ano Vlassia, upper course of river Selinous , 1000 m a.s.l., 37°57'N 21°47'E, 25.v.1992 Gerecke (0/1/0); GR68 Aroania, Kato Klitoria, Aroanias river , Ag. Vlasios, 500 m a.s.l., 37°52'N 22°12'E, 31.v.1999 Gerecke (0/1/0); Epiros: GR19 Pindas, Metsovon, Pláma, meadow brook E slopes, 1350 m a.s.l., QS 30 66, 23.v.1991 Gerecke (0/1/0); GR88 Pindos, upstream of Aristi, River Voidomatis , 06.v.1997 Smit (0/2/0) .

Records from the study area: Croatia: “ Megapus gibberipalpis ” K. Viets (1936) , Pešić (2002f); Montenegro: Pešić (1999, 2004a); Macedonia: “ M. gibberipalpis “ K. Viets (1936) , “ M. gibberipalpis “ Georgiev (1957) ; Bulgaria: “ M. gibberipalpis “ Angelov (1964) , Petrova (1971); Greece: Stephanides (1971).

Remarks: New for Serbia.

Habitat: Rhithrobiont.

Distribution: Palaearctic.

Atractides (Atractides) graecus K. Viets, 1950

New records: Montenegro: Bar, Međuriječka Planina Mt., spring, 15.iii.2007 Pešić (0/3/0); Danilovgrad, stream Rimanić near village Martinići, 53 m a.s.l., 42°31'33,10''N 19°11'34,85''E, 22.viii.2004 Pešić (0/8/0); Virpazar, spring “Dobre Vode“, 06.iv.2005 42 о 14'N 19 о 05'E Pešić (1/2/0); Bulgaria: Eastern Rhodopes, stream Malkata Reka near Madjarovo, 25.iv.2006 Pešić (0/1/0); Greece: GR6p Evia Island , the region of Ochi, Agios Dimitrios Gorge, Porfyras Ravine stream, 30.vi.2007 Pešić (0/1/0); Epiros: GR6 Thesprotia, Glyky, affluent of river Acheron from Frosíni, 150 m a.s.l., QR 82 15, 19.v.1991 Gerecke (1/1/0); GR7 Paramithias Oros, Glyky, spring right border river Acheron , 160 m a.s.l., QR 83 15, 19.v.1991 Gerecke (4/4/0); GR11 Xerovuni Platanussa, springs E of Skouda, 800 m a.s.l., QS 13 19, 21.v.1991 Gerecke (0/1/0); GR15 Pindos, NE Wotonosi. Stream at km 95 of the pass road, 1100 m a.s.l., QS 30 57, 22.v.1991 Gerecke (0/1/0); GR38 Makedonia, Chalkidiki, Chlomón Oros, valley at southern slopes, 650 m a.s.l., QU 32 16, 29.v.1991 Gerecke (0/1/0); Kiklades: GR49 Naxos, Apolonas, distanced about 2 km from the northern coast, 80 m a.s.l., 11.v.1990 Potthast (1/0/0); GR52 Naxos, brook in Egares valley northwestern from Nahos-Chora 150m, 14.v.1990 Potthast (1/0/0); GR53 Amorgos, stream near Amorgos-Chara, pool, 250 m a.s.l., 36°59'N 25°49'E, 27.v.1990 Potthast (0/1/0); GR55 Amorgos, monastery garden near Amorgos-Chara, spring, 50 m a.s.l., 36°59'N 25°50'E, 27.v.1990 Potthast (1/0/0); Achaia: GR60 Erymanthos, Ano Vlassia, river course Selinous, 1000 m a.s.l., 37°57'N 21°47'E, 25.v.1992 Gerecke (1/1/0); GR70 Aroánia, Planiteron; rheocrene near Mazi, 1200 m a.s.l., 37°54'N 22°17'E, 02.vi.1992 Gerecke (1/1/0); Lesbos : GR96 small stream E of Skoutaros, 01.v.2000 Smit (0/ 1/0); GR98 stream E of Ancient Antissa, 07.v.2000 Smit (0/1/0); GR99 stream Malionta between Messotopos and Eressos, 30.iv.2000 Smit (1/1/0); GR100 stream Revma Agiou Ioann , 11.v.2000 Smit (1/0/0) .

Records from the study area: Montenegro: Pešić (2002a, 2003g); Bulgaria: Pešić (2006); Greece: K. Viets (1950).

Habitat: Rhithrobiont; crenophilous.

Distribution: Balkan.

Atractides (Atractides) inflatipalpis K. Viets, 1950

New records: Greece: GR12 Epiros, Xerovuni, Plaka, River Arachthos below Agnanta, 200 m a.s.l., QS 15 24, 21.v.1991 Gerecke (0/1/0); Makedonia: GR45 Xanthi, NE pass of the road Xanthi-Stavrupolis, 800 m a.s.l., RL 47 97, 31.v.1991 Gerecke (0/1/0); GR87 Stavroupoli, stream along road from Xanthio, 30.iv.1997 Smit (0/1/0); GR79 Crete, Sarakinos valley near Mithi, 3–5 km N Mirthes, 01.x.1995 Potthast (1/0/0); Lesbos: GR93 stream Salantas, 04.v.2000 Smit (2/4/0); GR99 stream Malionta between Messotopos and Eressos, 30.iv.2000 Smit (0/1/0).

Records from the study area: Bulgaria: Pešić (2006); Greece: “ Atractides nodipalpis inflatipalpis “ K. Viets (1950) .

Habitat: Rhithrobiont.

Distribution: Balkan, Italy.

Atractides (Atractides) inflatipes Lundblad, 1956

New records: Montenegro: Danilovgrad , stream Rimanić near village Martinići, 53 m a.s.l., 42°31'33,10''N 19°11'34,85''E, 24.vi.2001 Pešić (0/3/0); ibid., 08.viii.2004 Pešić (0/1/0) .

Records from the study area: Montenegro: Pešić (2001b).

Habitat: Rhithrobiont.

Distribution: French Pyrenees, Balkan.

Atractides (Atractides) inflatus (Walter, 1925)

New records: Montenegro: Bar, stream above Stari Bar, 42 о 05'59''N 19 о 08'30''E, 19.v.2004 Pešić (0/1/0); Greece: Crete, stream Geropotamos at Timbaki , 07.v.1987 Smit (1/8/0); Epiros: GR6 Thesprotia , Glyky , affluent of river Acheron from Frosíni , 150 m a.s.l., QR 82 15, 19.v.1991 Gerecke (1/1/0); GR8 Ipiros: Preveza , Buná Zalongu , stream 2 km above Mirsíni, 180 m a.s.l., QW 78 93, 20.v.1991 Gerecke (0/2/0); GR9 Preveza , Buná Zalongu , Nenenbach 2 km above Mirsíni, 180 m a.s.l., QW 78 93, 20.v.1991 Gerecke (0/1/0); GR12 Xerovuni , Plaka , River Arachthos below Agnanta , 200 m a.s.l., QS 15 24, 21.v.1991 Gerecke (0/1/0); Makedonia: GR37 Chalkidiki , Chlomón Oros , Paleokastron , river Vatonia , 550 m a.s.l., QN 25 22, 28.v.1991 Gerecke (0/1/0); GR87 Stavroupoli , stream along road from Xanthi , 30.iv.1997 (0/2/0); GR98 Lesbos , stream E of Ancient Antissa, 07.v.2000 Smit (0/2/0) .

Records from the study area: Montenegro: Pešić (2003g); Macedonia: “ Megapus inflatus “ Schwoerbel (1963) , Pešić (2003g), Baker et al. (2008).

Remarks: New for Greece.

Habitat: Rhithrobiont.

Distribution: Mediterranean, Minor Asia, Iran.

Atractides (Atractides) latipalpis (Motaş & Tanasachi, 1946)

New records: Bosnia and Hercegovina: YU43 I Jahorina Mt., W from Bare, Rijeka Čemernica, 1000 m a.s.l., 43°46'N 16°30'W, 14.vi.1990 Gerecke (2/1/0); Macedonia: YU50 Osogovska Planina Mt. , Kiseliza , Trnovska Reka , 800 m a.s.l., QD 53 26, 05.vi.1991 Gerecke (0/1/0); Bulgaria: Sofia region, River Beli Iskar , interstitial, 1020 m a.s.l., 42 о 17'168"N 23 о 32'086"E, 16.viii.2004 Kenderov (1/0/0); River Iskar above Samokov town , interstitial, 1005 m a.s.l., 42 о 17'468"N 23 о 22'221"E, 02.v.2004 Kenderov (0/1/3); ibid., 16.viii.2004 Kenderov (1/0/0); ibid., 19.viii.2006 Kenderov (1/0/1); Samokov , River Iskar below Vedena river , interstitial, 638 m a.s.l., 42 о 33'616"N 23 о 25'395"E, 13.viii.2004 Kenderov (2/0/0); ibid., 15.i.2005 Kenderov (0/0/1); Samokov , River Vedena , interstitial, 643 m a.s.l., 42 о 33'608"N 23 о 25'328"E, 27.xii.2003 Kenderov (0/0/2) .

Records from the study area: Bulgaria: Petrova (1976a).

Remarks: New for Bosnia and Hercegovina and Macedonia.

Habitat: Hyporheobiont.

Distribution: South-east and central Europe.

Atractides (Atractides) latipes ( Szalay, 1935)

New records: Bosnia and Hercegovina : YU15 Trebinje , Lastva, Nudoljska Rijeka, 550 m a.s.l., 42°47'N 16°10'W, 02.vi.1990 Gerecke (1/1/0); YU44 Olovo, Rijeka Krivaja near Boganovici, 500 m a.s.l., CP 04 90, 14.vi.1990 Gerecke (0/1/0) .

Remarks: New for Bosnia and Hercegovina.

Habitat: Rhithrobiont; hyporheophilous.

Distribution: Eastern, southern and central Europe.

Atractides (Atractides) longiporus Petrova, 1968

Records from the study area: Bulgaria: Petrova (1968 a, 1968b, 1971).

Habitat: Hyporheobiont.

Distribution: Balkan; known only from the locus typicus (interstitial of the river Veleka).

Atractides (Atractides) longisetus Pešić, 2002

Records from the study area: Montenegro: Pešić (2002d, 2003b).

Habitat: Rhithrobiont.

Distribution: Balkan; known only from the locus typicus (stream Mrtvica in village Velje Duboko).

Atractides (Atractides) loricatus Piersig, 1898

New records: Macedonia: YU55 Šar Planina Mt., Popova Šapka, NW Lisec, Exp. NE, 1600 m a.s.l., 42°01'N 20°24'W, 06.vi.1991 Gerecke (0/3/0) .

Records from the study area: Croatia: “ Megapus barsiensis ” K. Viets (1936) , Pešić (2002f).

Remarks: New for Macedonia.

Habitat: Rhithrobiont.

Distribution: The Tatras, the Alps and the Dinaric mountains.

Atractides (Atractides) lunipes Lundblad, 1956

New records: Greece: GR48 Makedonia, Vrondús, Sidirókastron, Krousovitis Potamos, 180 m a.s.l., QK 32 09, 02.vi.1991 Gerecke (0/1/0); Lesbos: GR89 stream Evergetoulas, 04.v.2000 Smit (0/3/0); GR90 stream Mylopotamos, 06.v.2000 Smit (0/2/0); GR101 Potami river, upper east branch, 11.v.2000 Smit (0/1/0).

Records from the study area: Macedonia: Pešić (2003b, 2005).

Remarks: New for Greece.

Habitat: Rhithrobiont.

Distribution: Mediterranean, Minor Asia, Iran.

Atractides (Atractides) nodipalpis Thor, 1899

New records: Croatia: YU14 Vgroracko Polje, Kula, Rijeka Matica , 25 m a.s.l., YH 03 76, 30.v.1990 Gerecke (0/1/0); Bosnia and Hercegovina : YU15 Trebinje , Lastva , Nudoljska Rijeka , 550 m a.s.l., 42°47'N 16°10'W, 02.vi.1990 Gerecke (0/1/0); YU43 Jahorina Mt. , W from Bare, Rijeka Čemernica, 1000 m a.s.l., 43°46'N 16°30'W, 14.vi.1990 Gerecke (1/2/0); YU44 Olovo, Rijeka Krivaja near Boganovići, 500 m a.s.l., CP 04 90, 14.vi.1990 Gerecke (1/0/0); Montenegro: YU25 Vasojevići, River Lim near Andrijevica, 750 m a.s.l., 42°46'N 17°29'W, 06.vi.1990 Gerecke (1/1/1); Danilovgrad, River Zeta near Spuž, 41 m a.s.l., 42°30'39,63''N 19°11'52,99''E, 15.vii.2001 Pešić (2/0/0); Podgorica region , stream in canyon of the River Mrtvica , 600 m a.s.l., 42°43'N 19°21'E, 11.vii.1999 Pešić (0/1/0); Macedonia: YU50 Osogovska Planina Mt. , Kiseliza, Trnovska Reka, 800 m a.s.l., QD 53 26, 05.vi.1991 Gerecke (0/1/0); Greece: Evia Island : GRp6 the region of Ochi, Agios Dimitrios Gorge, Porfyras Ravine stream, 30.vi.2007 Pešić (1/0/0); GRp7 the region of Ochi, stream Gefira Dimosaris, downstream between Kalergo and Kallianos villages, 30.vi.2007 Pešić (0/1/0); GRp24 Sparta, stream Kelafina, a tributary of Evrotas river , 03.vii.2007 Pešić (0/2/0); Epiros: GR12 Xerovuni, Plaka, River Arachthos below Agnanta, 200 m a.s.l., QS 15 24, 21.v.1991 Gerecke (1/1/0); stream at junction of road E90 (Ioannina-Kozani) and road to Konitsa, 05.v.1997 Smit (1/0/0); Makedonia: GR28 Vernon, affluent of river Aliakmon between Gauros and Aposkepos, 450 m a.s.l., 40°39'N 21°11'E, 26.v.1991 Gerecke (0/0/2); GR29 Vemon Pisoderion, affluent of river Ladopotamos , 1200 m a.s.l., 40°47'N 21°24'E, 26.v.1991 Gerecke (1/0/0); GR37 Chalkidiki, Chlomón Oros, Paleokastron, river Vatonia , 550 m a.s.l., QN 25 22, 28.v.1991 Gerecke (1/0/0); GR48 Vrondús Sidirokastron, Krousovitis Potamos, 180 m a.s.l., QK 32 09, 02.vi.1991 Gerecke (2/2/0); GR49 Kiklades, Naxos, Apolonas, distanced about 2 km from the northern coast, 80 m a.s.l., 11.v.1990 Potthast (0/1/0); Achaia: GR68 Aroania, Kato Klitoria, Aroanias river , Ag. Vlasios, 500 m a.s.l., 22°12'E 37°52'N, 31.v.1999 Gerecke (0/1/4) .

Records from the study area: Croatia: “ Megapus nodipalpis ” K. Viets (1936) , Pešić (2002f); Bosnia and Hercegovina: “ M. nodipalpis “ Motaş et al. (1948) , Pešić (2003h); Montenegro: Pešić (1999); Serbia: Pešić (2003d); Macedonia: Pešić (2005); Bulgaria: “ M. nodipalpis “ K. Viets (1940) , Petrova (1971), Scheffler (1974), Pešić (2006).

Remarks: New for Greece.

Habitat: Rhithrobiont.

Distribution: Palaearctic.

Atractides (Atractides) oblongus (Walter, 1944)

New records: Bosnia and Hercegovina : YU4 Željeznica , between Fojnica and Bakovići (Ključ), 550 m a.s.l., YJ 34 69, 27.v.1990 Gerecke (0/1/0); Šipovo , canyon of river Sokočnica , 10.viii.2001 Pešić (0/1/0); Montenegro: YU35 Sinjajevina Planina Mt. , Lipovo , spring stream Ropošnica , 1300 m a.s.l., 43°60'N 17°10'W, 10.vi.1990 Gerecke (3/3/0); Podgorica , River Cijevna near village Dinoša , interstitial, 97 m a.s.l., 42°23'59,48''N 19°21'56,26''E, 25.viii.1999 (1/0/0); NP “Biogradska Gora”, stream Piva , 1243 m a.s.l., 42°53'N 19°37'E, 19.vii.2000 (1/1/0); Bjelasica Mt. , spring of Biogradska Rijeka , 42°51'N 19°40'E, 20.vii.2000 (0/1/0); Mojkovac , stream Ljevok near village Ljevok , 849 m a.s.l., 42°59'N 19°26'E, 28.iv.2002 Pešić (0/2/0); Greece: GR64 Achaia , Erymanthos , Ano Vlassia, spring at slopes above Selinous, 1200 m a.s.l., 37°57'N 21°47'E, 27.v.1992 Gerecke (0/1/0) .

Records from the study area: Montenegro: Pešić (2003g).

Remarks: New for Bosnia and Hercegovina and Greece.

Habitat: Rhithrobiont; hyporheophilous.

Distribution: Alps, central Europe, Carpathians, Balkan peninsula.

Atractides (Atractides) octoporus Piersig, 1904

New records: Croatia: Karlovac County, River Dobra below the Gojak Hydroelectric Power Plant, moss, 02.x.2008 Žganec & Gottstein (1/2/0).

Remarks: New for the Balkan peninsula.

Habitat: Rhithrobiont.

Distribution: Central Europe, Balkan.

Atractides (Atractides) ovalis Koenike, 1883

New records: Montenegro: YU39 Durmitor area , Branovo , Riblje and Vražje Jezero, CN 49 72, 1400 m a.s.l., 11.vi.1990 Gerecke (1/1/1) .

Records from the study area: Serbia: Ratajac & Rajaković (1992), Pešić (2003e).

Remarks: New for Montenegro.

Habitat: Lake.

Distribution: Northern and central Europe, two records published from the south-west Palaearctic region ( Italy and Asia Minor).

Atractides (Atractides) panniculatus (K. Viets, 1925)

New records: Greece: Epiros: GR15 Pindos, NE Wotonosi, stream at km 95 of the pass road, 1100 m a.s.l., QS 30 57, 22.v.1991 Gerecke (1/1/0); GR88 Pindos, upstream of Aristi, River Voidomatis, 06.v.1997 Smit (0/1/0); GR29 Makedonia, Vemon Pisoderion, affluent of river Ladopotamos, 1200 m a.s.l., 40°47'N 21°24'E, 26.v.1991 Gerecke (0/1/3); GR74 Achaia, Aroánia, Kato Zachlorou, River Vouraikos near railroad station, 400 m a.s.l., 38°10'N 22°14'E, 05.vi.1992 Gerecke (1/1/0) .

Remarks: New for Greece.

Habitat: Rhithrobiont.

Distribution: Iberian peninsula, central Europe, Carpathians, Asia Minor.

Atractides (Atractides) pennatus (K. Viets, 1920)

New records: Montenegro: Podgorica, Komani, rheocrenic spring Vriješko vrelo, 44 m a.s.l., 42°30'42''N 19°06'58''E, 06.vi.1999 Pešić (1/1/0); Podgorica, spring Ribnička Vrela, 50 m a.s.l., 42°266'14.10''N 19°17'50.62''E, 05.viii.2006 Pešić (1/0/0); Nikšić, Vidrovanska river near village Vidrovan, 657 m a.s.l., 42°51'N 18°56'E, 06.ix.2000 Pešić (1/1/0); Crmnica, Trnovo, spring, 330 m a.s.l., 11.vi.1997 Karanović (1/0/ 0); Nikšić, rheocrenic spring near village Vidrovan, 42°51'N 18°56'E, 20.viii.1999 Pešić (2/1/0); Nikšić, rheocrenic spring “Pećina“ near village Rastovac, 42°50'N 18°55'E, 24.iv.2001 Pešić (1/3/0); Cetinje, Crnojevića River (upper part), 42°21'N 19°00'E, 16.vii.2006 Pešić (1/0/0); Serbia: Sokobanja, the spring (“Vrelo“) of Moravica river , 390 m a.s.l., 43°37'53.77''N 21°59'9.15''E, 24.ix.2009 Pešić (12/0/0) .

Records from the study area: Croatia: “ Megapus nodipalpis pennata ” K. Viets (1936) , Pešić (2002f); Bosnia and Hercegovina: Pešić (2003h); Montenegro: “ M. nodipalpis pennatus ” Pešić (1999) ; Macedonia: “ A. nodipalpis longitibialis “ Schwoerbel (1963) .

Remarks: New for Serbia.

Habitat: Crenobiont or crenophilous.

Distribution: Europe, except for Fennoscandia and the Caucasus.

Atractides (Atractides) phreaticus (Motaş & Tanasachi, 1948)

New records: Bulgaria: Sofia region, River Beli Iskar , interstitial, 1020 m a.s.l., 42 о 17'168"N 23 о 32'086"E, 16.viii.2004 Kenderov (1/0/0) .

Records from the study area: Bulgaria: Petrova (1976a).

Habitat: Hyporheobiont.

Distribution: Central and south-east Europe.

Atractides (Atractides) protendens K.O.Viets, 1955

New records: Montenegro: YU39 Durmitor area, Branovo , Riblje i Vražje Jezero , CN 49 72, 1400 m a.s.l., 11.vi.1990 Gerecke (0/1/0); Serbia: YU57 Šar Planina Mt. , pass Gornje Selo , spring area of Suva river , 1450 m a.s.l., 42°10'N 20°28'W, 07.vi.1991 Gerecke (0/1/0); Greece: GR11 Epiros, Xerovuni Platanussa , springs above Skouda , 800 m a.s.l., QS 13 19, 21.v.1991 Gerecke (0/1/0); Achaia : GR69 Aroánia Planiteron , spring in the valley below Mazi , 1000 m a.s.l., 37°55'N 22°15'E, 02.vi.1992 Gerecke (1/1/0); GR70 Aroánia , Planiteron , rheocrene near Mazi , 1200 m, a.s.l. 37°54'N 22°17'E, 02.vi.1992 Gerecke (1/1/0); GR73 Aroánia , Kato Zachlorou , spring in the Vouraikos valley , 500 m a.s.l., 38°10'N 22°14'E, 05.vi.1992 Gerecke (0/2/0) .

Records from the study area: Macedonia: Pešić (2005).

Remarks: New for Serbia, Montenegro and Greece.

Habitat: Crenobiont or crenophilous.

Distribution: Central Europe, Alps, Balkan.

Atractides (Atractides) pumilus (Szalay, 1946)

Records from the study area: Montenegro: “ A. primitivus “ Pešić (1999) , Pešić (2004a); Bulgaria: “ A. primitivus , A. pumilus “ Petrova (1976a)

Habitat: Hyporheobiont.

Distribution: Central and south-east Europe.

Atractides (Atractides) pygmaeus (Motaş & Tanasachi, 1948)

Records from the study area: Montenegro: Pešić (2003f, 2004b); Bulgaria: Petrova (1976a).

Habitat: Hyporheobiont.

Distribution: Alps, Carpathians, Balkan.

Atractides (Atractides) remotus Szalay, 1953

Records from the study area: Montenegro: Pešić (2002b); Bulgaria: Petrova (1971).

Habitat: Rhithrobiont.

Distribution: Central Europe, Alps, Carpathians, Balkan.

Atractides (Atractides) robustus (Sokolow, 1940)

New records: Bosnia and Hercegovina: YU3 Ranca Planina Mt., Donji Korićani, River Ugar near Vlalkovići, 500 m a.s.l., 45°50'N 17°40'W, 26.vi.1990 Gerecke (1/2/4); YU4 Željeznica, between Fojnica and Bakovići (Ključ), 550 m a.s.l., YJ 34 69, 27.v.1990 Gerecke (1/0/0); YU15 Trebinje, Lastva, Nudoljska Rijeka, 550 m a.s.l., 42°47'N 16°10'W, 02.vi.1990 Gerecke (1/0/0); YU44 Olovo, Rijeka Krivaja near Boganovići, 500 m a.s.l., CP 04 90, 14.vi.1990 Gerecke (0/1/0); Montenegro: YU20 Lijeva Rijeka near Lebaja, 900 m a.s.l., 42°51'N 17°307'W, 04.vi.1990 Gerecke (1/0/0); YU39 Durmitor area , Branovo, Riblje and Vražje Jezero, CN 49 72, 1400 m a.s.l., 11.vi.1990 Gerecke (1/0/0); Bulgaria: Sofia area: Cherni Iskar River , 1012 m a.s.l., 42 о 17'123''N 23 о 31'997''E, 16.viii.2004 Kenderov (1/1/0); Beli Iskar River , 1020 m a.s.l., 42 о 17'168"N 23 о 32'086"E, 16.viii.2005 Kenderov (1/5/0); River Iskar above Samokov , interstitial, 1005 m a.s.l., 42 о 17'468''N 23 о 22'221''E, 16.viii.2005 Kenderov (1/3/0); ibid., surface, 19.viii.2006 Kenderov (1/17/0); Greece: Sparta : GR23p River Evrotas near Sparta city, 03.vii.2007 Pešić (1/0/0); GR29p stream Magolitsa near village Tribi , 05.vii.2007 Pešić (1/1/0); Crete: stream E of Filaki, 27.iv.1987 Smit (1/0/0); stream S of Moundos (S of Rhetima), 27.iv.1987 Smit (0/1/0); GR6 Epiros, Thesprotia , Glyky , affluent of river Acheron from Frosíni , 150 m a.s.l., QR 82 15, 19.v.1991 Gerecke (1/2/0); GR52 Kiklades , Naxos , brook in Egares valley northwestern from Nahos-Chora 150 m a.s.l., 14.v.1990 Potthast (1/0/0); GR74 Achaia , Aroánia , Kato Zachlorou , River Vouraikos near railroad station, 400 m a.s.l., 38°10'N 22°14'E, 05.vi.1992 Gerecke (2/1/0); Lesbos : GR89 stream Evergetoulas , 04.v.2000 Smit (2/0/0); GR90 stream Mylopotamos , 06.v.2000 Smit (0/1/ 0); GR95 Potami river , upper west branch, 03.v.2000 Smit (1/1/0); GR99 stream Malionta between Messotopos and Eressos, 30.iv.2000 Smit (0/2/0); GR101 Potami River , upper east branch, 11.v.2000 Smit (1/0/0) .

Records from the study area: Croatia: “ A. nodipalpis robustus ” Schwoerbel (1963) , Pešić (2002f); Bosnia and Hercegovina: “ A. nodipalpis robustus ” Schwoerbel (1963) ; Montenegro: “ A. nodipalpis robustus ” Pešić (1999) , Pešić (2004a); Macedonia: “ Megapus nodipalpis robustus “ Schwoerbel (1963) .

Remarks: New for Bulgaria and Greece.

Habitat: Rhithrobiont.

Distribution: Russia, Caucasus, Central and southern Europe, Iran.

Atractides (Atractides) sokolowi (Motaş & Tanasachi, 1948)

Records from the study area: Bulgaria: Petrova (1976a).

Habitat: Rhithrobiont.

Distribution: Eastern and southeastern Europe.

Atractides (Atractides) spinipes Koch, 1837

New records: Greece: GR15 Epiros, Pindos, NE Wotonosi. Stream at km 95 of the pass road, 1100 m a.s.l., QS 30 57, 22.v.1991 Gerecke (0/1/0); GR45 Makedonia, Xanthi, NE pass of the road Xanthi-Stavrupolis, 800 m a.s.l., RL 47 97, 31.v.1991 Gerecke (0/1/0); Achaia: GR59 Erymanthos, Ano Vlassia, upper course of river Selinous , 1000 m a.s.l., 37°57'N 21°47'E, 25.v.1992 Gerecke (0/1/0); GR62 Erymanthos, Ano Vlassia, stream northwest from chapel, 1200 m a.s.l., 37°58'N 21°45'E, 26.v.1992 Gerecke (0/1/0); GR99 Lesbos, stream Malionta between Messotopos and Eressos, 30.iv.2000 Smit (0/1/0) .

Records from the study area: Croatia: “ Megapus spinipes ” K. Viets (1936) , Pešić (2002f); Montenegro: Pešić (2003a); Serbia: Pešić (2003e); Bulgaria: “ M. spinipes ” K. Viets (1926) , “ M. spinipes ” Arndt (1943) , Petrova (1971), Scheffler (1974).

Remarks: New for Greece.

Habitat: Rhithrobiont.

Distribution: Central Europe, Balkan.

Atractides (Atractides) stankovici Pešić & Gerecke sp. nov.

( Figs. 4–5 )

A. fluviatilis (Szalay) partim Gerecke (2003)

Material examined. Holotype ( SMF 4974 ): male, dissected and slide-mounted; Croatia, Stobrec , 17.8.1934 Viets leg. Paratypes: two females, dissected and slide-mounted, same data as holotype; two males, two females, dissected and slide-mounted, YU14 Vrgoracko Polje , Kula , Rijeka Matica, Versinkung, 25 m a.s.l., YH 03 76, 30.v.1990, leg. Gerecke ; one male, dissected and slide-mounted, YU12 Vrgoracko Polje , Pecina, rheocrene Stinjevac, 30m, XH 96 83, 30.v.1990, leg. Gerecke.

Diagnosis. Dorsal integument striated; muscle attachment plates unsclerotized; palp: P-2 ventral margin with sexual dimorphism (distally protruding in males, slightly convex in females), P-3 ventral margin straight; sword seta of P-4 nearer to the distoventral than to the proximoventral hair; Ac large (maximum diameter> 40 µm in males,> 50 µm in females), their arrangement intermediate between a curved line and an obtuse triangle; male genital field with straight or slightly concave anterior margin; excretory pore unsclerotized; Vgl-1 not fused to Vgl-2; setae S-1 and S-2 on I-L-5 distanced, distally narrowed, but with obtuse tips, I-L-6 slender, curved, basally slightly thickened, with parallel dorsal and ventral margins.

Description

Male (holotype SMF 4974, data taken from Gerecke 2003; in parentheses measurements of two specimens from YU14, in square parentheses measurements of one specimen from YU12). Idiosoma L/W 710/550; coxal field L 360 (341–350) [363]; Cx-III W 405 (403–419) [422]; Cx-I+II mL (106–122) [122]; lL (231– 241) [250]. Genital field ( Fig. 4B ) narrow, L/W, 128/145 (123–127/136–141); L Ac-1-3, 42, 42, 42 (41, 41– 46, 46–47) [41, 47, 46]; anterior margin slightly concave, posterior margin indented.

Palp ( Figs. 4C–D ) total L 344 (326–330) [335], dL: P-1, 32 (34–36) [33]; P-2, 80 (77–79) [76]; P-3, 88 (77–80) [83]; P-4, 107 (100–103) [106]; P-5, 37 (35) [37]; %L: P-1, 9.0 (10.4–10.9) [9.9]; P-2, 23.0 (23.6– 23.9) [22.7]; P-3, 26.0 (23.3–24.5) [24.8]; P-4, 31.0 (30.7–31.2) [31.6]; P-5, 11.0 (10.6–10.7) [11.0]; L ratio P-2/P-4, 0.75 (0.77) [0.72]; ventrodistal margin of P-2 convexely protruding, P-4 sword seta strong, near distoventral hair.

I-L ( Fig. 4A ): I-L-5 dL 222 (211–212) [206], vL 152 (136–138) [136], dL/vL 1.46 (1.54–1.55) [1.52], HB 63 (61–64) [64], dL/HB 3.52 (3.3–3.5) [3.2], S-1 L 116 (109–117) [117], L/W 11.6 (11.1–12.0) [12.9], S-2 L 93 (93) [100], L/W 9.3 (7.2) [7.7], distance S-1-2, 39 (27) [27], L ratio S-1/2 1.25 (1.26) [1.17]; I-L-6 L 163 (164–162) [167], HB 21 (20–21) [21], L/HB 7.76 (7.7-8.2) [8.0]; L ratio I-L-5/6 1.36 (1.29–1.3) [1.23].

Female (SMF 4974, data taken from Gerecke 2003; in parentheses measurements of two specimens from YU14). Idiosoma L/W 660/470; coxal field L 401 (443–456); Cx-III W 441 (569–581); Cx-I+II mL (153); lL (313). Genital field ( Fig. 5A ) L/W, 153/184 (200–203/219–269); individual genital plate L, (163–172); Ac-1- 3, 56, 72, 72 (53–56, 56–63, 59–62).

Palp ( Figs. 5C–D ) total L (443–455), dL: P-1, 47 (41–44); P-2, 105 (102); P-3, 125 (123–127); P-4, 138 (134–138); P-5, 44 (43–44); %L: P-1, 10.0 (9.3–9.7); P-2, 23.0 (22.4–23.0); P-3, 27.0 (27.8–27.9); P-4, 30.0 (30.2–30.3); P-5, 10.0 (9.7); L ratio P-2/P-4, 0.76 (0.74–0.76).

I-L ( Fig. 5B ): I-L-5 dL 306 (284–303), vL 193 (181–191), dL/vL 1.59 (1.57–1.59), HB 92 (88–94), dL/ HB 3.33 (3.2), S-1 L 168 (156–164), L/W 15.3 (15.1–15.9), S-2 L 132 (125), L/W 6.6 (7.3), distance S-1-2, 52 (43–47), L ratio S-1/2 1.27 (1.25); I-L-6 L 244 (225–241), HB 18 (19), L/HB 13.55 (11.8–12.7); L ratio I- L-5/6 1.25 (1.26–1.28).

Discussion. Gerecke (2003) based a redescription of Atractides fluviatilis , a species for which the type material is lost, on specimens (SMF 4974) from Stobrec, Croatia, which had been published as the first records after the original description of this species (K. Viets 1936). From this material he deduced the presence of a striated integument as a diagnostic character, while Szalay gave no information on this character state in the original description. Instead, in a redescription of A. fluviatilis based on specimens from Balkan ( Montenegro, Serbia and Macedonia) and Iran, Pesic et al. (2004) followed Lundblad’s (1956) opinion who stated that the integument structure of A. fluviatilis should be lineated as in A. panniculatus . The specimens described by these authors resemble more closely Szalay's figure, having the Ac arranged in a curved line rather than in an obtuse triangle as in SMF 4974 (see Gerecke 2003). As Szalay (1964) provided Lundblad’s (1956) figure in his description of A. fluviatilis , he obviously followed Lundblad’s interpretation of this species, with the consequence that the specimens from Croatia and Israel attributed by Gerecke (2003) to A. fluviatilis in fact represents an undescribed species ( Pesic et al. 2004).

The specimens from Vrgoracko Polje ( Croatia) are in good agreement with the specimens attributed by Viets (1936) to A. fluviatilis which are described under the name of A. stankovici nov. sp. as representatives of the previously misunderstood species. In the striated integument, presence of a slight protrusion of the ventrodistal margin of P-2 and the sword seta of P-4 located near the distoventral hair, A. stankovici resembles A. diastema ( Szalay, 1935) , a little documented species known only from a single female specimen ( Szalay 1935, Gerecke 2003). From A. stankovici , A. diastema differs in considerably lower measurement values (data from the original description—e.g., L I-L-5/6 233/183), S-2 strongly thickened in the basal third, a less slender I-L- 6 and smaller Ac (maximum diameter <40µm, calculated from Szalay’s figure).

The specimens from Israel attributed by Gerecke (2003) to A. fluviatilis agreed in most measurements with the specimens from Croatia, but males differ in their genital field strongly reduced in size, a shorter palp and a lower I-L-5/6 ratio, and females in minor measurement values of genital field, palp and I-L-5/6, a more slender S-1, a shorter S-2 and more slender I-L-5 (see Gerecke 2003 for measurements). The variability range of these characters should be checked in additional populations from Near East and the Balkan before we can assess the taxonomic state of these specimens. As a consequence, the definition of A. stankovici sp. nov. is restricted to character states and measurements here described for specimens from Croatia.

Etymology. Named after Professor Siniša Stanković (1892–1974), the founder of the Belgrade School of Ecology and the Hydrobiological Institute in Ohrid.

Habitat: Rhithrobiont.

Distribution. Known only from the type localities in the Dalmacija (Vrgoracko Polje and Stobrec).

Atractides (Atractides) subterraneus (K.Viets, 1932)

Records from the study area: Macedonia: “ Megapus subterraneus “ K. Viets (1932c, 1934a , 1935a); Bulgaria: Petrova (1976a).

Habitat: Hyporheobiont.

Distribution: Balkan, Romania, France.

Atractides (Atractides) tener Thor, 1899

New records: Bosnia and Hercegovina : YU43 Jahorina Mt. , W from Bare , Rijeka Čemernica, 1000 m a.s.l., 43°46'N 16°30'W, 14.vi.1990 Gerecke (0/1/0); YU45 Zvijezda Planina Mt., Vareš, springs near Ocevlje pass, 1100 m a.s.l., BP 94 94, 16.v.1990 Gerecke (0/1/0) ; Montenegro: YU20 Lijeva Rijeka near Lebaja, 900 m a.s.l., 42°51'N 17°307'W, 04.vi.1990 Gerecke (0/1/0) ; Greece: GR29 Makedonia, Vernon , Pisoderion, affluent of river Ladopotamos, 1200 m a.s.l., 40°47'N 21°24'E, 26.v.1991 Gerecke (0/1/0) .

Records from the study area: Montenegro: Pešić (2003g); Macedonia: Schwoerbel (1963); Bulgaria: Scheffler (1974).

Remarks: New for Bosnia and Hercegovina and Greece.

Habitat: Rhithrobiont.

Distribution: Europe.

Atractides (Atractides) walteri (K.Viets, 1925)

Records from the study area: Bulgaria: Petrova (1976a).

Habitat: Stream.

Distribution: Alps, Carpathians.

Atractides (Atractides) sp. 1

( Figs. 6–7 )

Material examined: Macedonia: YU50 Osogovska Planina Mt. , Kiseliza, Trnovska Reka, 800 m a.s.l., QD 53 26, 05.vi.1991 Gerecke (0/1/0) .

Morphology

Female: Dorsal integument striated; dorsal and ventrocaudal muscle attachments unsclerotized ( Fig. 6A ). Coxal field L 253; Cx-I+II mL 73; lL Cx-I+II 163. Genital field ( Fig. 6B ) L/W 145/128, gonopore very long, genital plate triangular, L 77, flanking the postgenital sclerite, L Ac-1-3, 23, 20, 19. Excretory pore formed as a longish slit, without sclerotization; Vgl-1 and -2 separate from each other.

Palp ( Figs. 7A–B ): total L 294, dL and %L (in parentheses): P-1, 24 (8.2); P-2, 69 (23.5); P-3, 76 (25.9); P-4, 96 (32.7); P-5, 29 (9.9); L ratio P-2/P-4, 0.72; P-2 and P-3 both with straight ventral margins, and pointed ventrodistal tips, P-4 ventral margin divided by setae insertions into three concave sectors 1:1:2, both ventral seta insertions surrounded by tubercular protrusions, sword seta near distoventral seta.

I-Leg ( Fig. 6C ): I-L-5 and -6 little modified, I-L-5 with subparallel dorsal and ventral margins, S-1 and -2 short, homoiomorphic, apically knob-shaped, inserted side by side (no interspace visible in lateral view); I-L- 6 nearly straight, with dorsal and ventral margins equally diverging distally; I-L-5 dL 108, vL 88, dL/vL 1.23, HB 26, dL/HB 4.2, S-1 L 31, L/W 10.3, S-2 L 32, L/W 10.7, L ratio S-1/2 0.97; I-L-6 L 102, HB 20, ratio L/ HB 5.2; L I-L-5/6 1.06.

Discussion. In the shape of genital field (triangular genital field near posterior end of gonopore), I-L (terminal segments slightly modified, S-1 and S-2 short and stout, without interspace) and palps (P-2 with an acute-angled ventrodistal edge, ventral setae on P-4 flanked by tubercles), the female from Osogovska Planina agrees with A. pumilus (Szalay, 1946) , A. pygmaeus Motaş & Tanasachi, 1948 and A. ubinicus Tuzovskij, 1980 (Szalay 1946, Motaş & Tanasachi 1948, Tuzovskij 1980). These species differ in the presence of sclerotized dorsal and ventrocaudal muscle attachment plates and fusion of Vgl-1+2, A. pumilus and A. ubinicus furthermore in the excretory pore surrounded by a sclerotized ring, and the latter in the sword seta on P-4, being stouter, peg-like, and located more distally. Due to the clearcut differences, together with the fact that in pumilus -like species no particular sexual dimorphism is to be expected, the female from Macedonia most probably represent a species new to science. However, since male specimens are not available, the introduction of a new name will create more confusion than information given the present state of knowledge.

Habitat: Rhithrobiont.

Atractides (Atractides) sp. 2

( Figs. 8–9 )

Material examined. Greece: GR95 Lesbos, Potami river, upper west branch, 03.v.2000 Smit (0/2/0); GR 97

Lesbos, stream Priona S of Neochori, 04.v.2000 Smit (0/1/0); GR48 Makedonia, Vrondús, Sidirókastron, Krousovitis Potamos, 180 m a.s.l., QK 32 09, 02.vi.1991 Gerecke (0/1/0).

Morphology

Female: Dorsal integument striated; muscle attachment plates unsclerotized; glandularia small, maximum diameter 18–22. Coxal field ( Fig. 8A ): caudal margin of Cx-I weakly curved, apodemes of Cx-II directed laterally; coxal field L 288–300; Cx-III W 316–370; Cx-I+II mL 102–109; lL Cx-I+II 203–206. Genital field ( Figs. 8A, C ): pregenital sclerite curved, gonopore extending far over the anterior margins of the genital plates, Ac in a weakly curved line, L/W, 138–148/133–136; genital plate L 83–91; L Ac-1-3, 24–30, 24–26, 22–26. Excretory pore smooth; Vgl-1 not fused to Vgl-2.

Palp ( Fig. 8B ): total L 273–286, dL: P-1, 31–32; P-2, 61–65; P-3, 64–68; P-4, 85–89; P-5, 30–32; %L: P- 1, 11.1–11.7; P-2, 22.3–22.9; P-3, 22.9–23.8; P-4, 31.1–31.8; P-5, 11.0–11.4; L ratio P-2/P-4, 0.72–0.73; P-2 ventral margin distally weakly convex; P-3 and P-4 ventral margins straight, P-4 sword seta strong, near to distoventral seta.

I-L ( Figs. 9A–B ): I-L-5 longish, S-1 and S-2 rather homoiomorphic, setal interspace narrow; I-L-6 short, curved, basally thickened and distally continuously narrowed; I-L-5 dL 161–174, vL 118–124, dL/vL ratio 1.36–1.39, HB 52–58, dL/HB 3.0–3.1, S-1 L 77–80, L/W 10.3–10.5, S-2 L 70–78, L/W 6.7–8.1, distance S-1- 2, 10–12, L ratio S-1/2, 1.1; I-L-6 L 103–109, HB 24, L/HB ratio 4.3–4.5; L ratio I-L-5/6, 1.6.

Discussion. Due to the presence of small glandularia, very fine integument striation, I-L-5 with rather homoiomorphic S-1 and S-2 with narrow setal interspace and robust I-L-6 (L/HB <5.0), the described specimens are similar to A. vaginalis (Koenike, 1905) and A. adnatus ( Lundblad, 1956) , both crenobiontic species known from the Alps and Tatras (record of A. adnatus from Tatras with question mark, see Gerecke 2003). Both species (in parentheses, data taken from Gerecke 2003) differ in larger dimensions of Ac (> 40µm) in a triangular arrangement, S-1 and -2 nearly equal in size L ratio <1.1), and a narrower setal interspace (<10µm). Furthermore, A. adnatus (in parentheses) differs in a longer median suture of Cx-I (>120µm) and a relatively longer I-L-6 (L ratio I-L-5/6 <1.5). Probably, the three specimens from Makedonia and Lesbos represent a species new to science. A description and definitive diagnosis can be given only if the new taxon is known in both sexes.

Habitat. Rhithrobiont.

Atractides (Atractides) sp. 3

( Figs.10–11 )

Material examined. Greece, Lesbos: GR90 stream Mylopotamos, 06.v.2000 Smit (0/1/0); GR91 stream Evergotoulos, 02.v.2000 Smit (0/1/0); GR92 stream Krioneri, 11.v.2000 Smit (0/1/0).

Morphology

Female Idiosoma L/W 656–688/463–506. Dorsal integument striated; muscle attachments unsclerotized; glandularia enlarged by secondary sclerotization, maximum glandularia diameter 30–35. Coxal field ( Fig. 10A ) with apodemes Cx-II in a 45° angle; coxal field L 295–314; Cx-III W 319–362; Cx-I+II mL 95–100; lL Cx-I+II 182–200. Genital field ( Figs. 10A–C ) L/W, 139–158/133–150; genital plate L, 86; pregenital sclerite narrow, W 94–103; Ac in a weakly curved line, L Ac-1-3, 20–21, 18–21, 21–27. Excretory pore smooth; Vgl- 1 and Vgl-2 closely approached or (in older female) fused ( Fig. 11C ).

Palp ( Figs. 11C–D ) total L 275–296, dL P-1, 27–29; P-2, 61–65; P-3, 69–76; P-4, 86–93; P-5, 32–34; %L: P-1, 9.8–9.9; P-2, 21.5–22.2; P-3, 25.1–25.9; P-4, 31.1–31.7; P-5, 10.9–11.6; L ratio P-2/P-4, 0.7–0.72; palp slender, P-2 ventral margin weakly convex, nearly straight; P-3 ventrally straight, P-4 sword seta approached to distoventral seta; chelicera total L 192–197.

I-L ( Figs. 11A–B ): I-L-5 considerably thickened at insertion S-1, ventral seta inserting very close to S-1; S-1/2 heteromorphic, thickened, setal interspace large; I-L-6 curved, very slender; I-L-5 dL 203–209, vL 115- 121, ratio dL/vL 1.74–1.88, HB 68–74, ratio dL/HB 2.8–3.0, S-1 L 112–123, L/W 8.6–10.2, S-2 L 76–83, L/ W 4.5–4.9, distance S-1-2, 46–50, L ratio S-1/2 1.47–1.56; I-L-6 L 150–167, HB 14–15, ratio L/HB 10.0– 11.6; L ratio I-L-5/6 1.25–1.35.

Discussion. In shape and measurements of idiosoma, palps and I-Leg, these specimens from Lesbos show a general conformity with A. inflatipes (see above, details for this species in Gerecke 2003 and Pesic 2001b), from which it differs in larger dimensions of glandularia (21µm in A. inflatipes ), a more elongated gonopore, and minor dimensions of Ac (maximum diameter> 30µm in A. inflatipes ). The study of more material is necessary before a decision can be made if we have to deal with an undescribed sister species of A. inflatipes or if our data contribute only to enlarge the known variability range of the latter.

Habitat: Rhithrobiont.

Atractides (Polymegapus) orghidani Motaş & Tanasachi, 1960

New records: Greece: Makedonia: GR37 Chalkidiki, Chlomón Oros, Paleokastron, river Vatonia, 550 m a.s.l., QN 25 22, 28.v.1991 Gerecke (0/1/0); GR87 Stavroupoli, stream along road from Xanthio, 30.iv.1997 Smit (0/2/0).

Records from the study area: Montenegro: Pešić (2003f).

Remarks: New for Greece.

Habitat: Rhithrobiont.

Distribution: Romania, Balkan, Italy.

Atractides (Polymegapus) polyporus (K.Viets, 1922)

Records from the study area: Bulgaria: Petrova (1968b, 1971).

Habitat: Crenobiont—rhitrophilous.

Distribution: Central and southern Europe, North Africa, Iran. Atractides (Tympanomegapus) acutirostris (Motaş & C. Angelier, 1927)

New records: GR48 Makedonia, Vrondús, Sidirókastron, Krousovitis Potamos, 180 m a.s.l., QK 32 09, 02.vi.1991 Gerecke (0/1/0); GR89 Lesbos, stream Evergetoulas, 04.v.2000 Smit (0/1/0).

Records from the study area: Serbia: Živić et al. (2002), Pešić (2003e); Macedonia: Pešić (2005), Baker et al. (2008); Bulgaria: “ A. magnirostris “ Petrova (1968b) ,“ A. magnirostris , A. acutirostris “ Petrova (1976a) ; Greece: Gerecke (2003).

Habitat: Rhithrobiont.

Distribution: Central and southern Europe, British Islands, Balkan, Asia Minor, Iran.

Atractides (Tympanomegapus) lacustris (Lundblad, 1925)

( Fig. 12 )

Syn. Atractides moniezi (Motaş, 1927) : syn. nov.

New record: Greece: GR90 Lesbos, stream Mylopotamos, 06.v.2000 Smit (1/0/0). Remarks: Atractides lacustris is closely related to A. ibericus (Lundblad, 1954) and A. moniezi (see Gerecke 2003). Atractides lacustris differs from A. ibericus in less extended dorsal and ventral shields (ventrocaudal sclerites not fused to a unique plate vs. fused to a unique plate in A. ibericus ), larger dimensions of idiosoma and appendages (L idiosoma> 550, coxal field> 300, I-L-5/6> 120/110 vs. L idiosoma <550, coxal field <300. I-L-5/6 <120/ 110 in A. ibericus ), cheliceral claw relatively short (basal segment/claw> 2.6 vs. <2.6 in A. ibericus ), I-L-5 more slender (dL/HB> 3.8 vs. <3.8 in A. ibericus ), and I-L-6 relatively short (ratio I- L-5/ 6>1.15 vs. <1.15 in A. ibericus ). The male specimen from Lesbos has dimensions similar to A. lacustris or intermediate between A. lacustris and A. ibericus (e.g., L idiosoma 556, coxal field L 300, chelicera basal segment/claw 2.86, I-L-5/6 126/102, S-1/2 42/49, I-L-5 dL/HB 4.86, I-L-6 dL/HB 4.6, L I-L-5/6 1.23). According to Gerecke (2003) sclerotization of muscle attachment plates is highly variable in males of A. lacustris . In the holotype of A. scutatus (syn. to A. lacustris ), an extended shield covering most of the dorsum, including prefr, postoc, D-1-4, and Dgl-3-5 is present; all coxae are fused to form a unique coxal shield, and the border of secondary sclerite at the posterior margin of Cx-IV includes also Vgl-3+4. The specimen from Lesbos has an extended ventral shield including genital field and all ventralia, but excluding Vgl-1+2 and the excretory pore ( Fig. 12A ). The holotype of A. ibericus differs mostly in the fusion of Vgl-1+2 to the ventral shield. Future studies should clear if this is a stable character.

Atractides moniezi , a species known only from females, according to Gerecke (2003) should differ from A. lacustris in the presence of a pair of long swimming setae each on III/IV-L-5, along with slightly minor palp measurements and more slender P-4 and I-L-5. As swimming hairs are easily lost or overlooked, and the specimen from Lesbos has a pair of swimming hairs at distal margins of III/IV-L-5 ( Fig. 12C ), we consider A. moniezi a junior synonym of A. lacustris . New for the fauna of Greece.

Habitat: Slow running waters.

Distribution: Sweden, Ireland, The Netherlands, France, Germany, Switzerland, Russia.

Atractides (Tympanomegapus) pavesii Maglio, 1905

Records from the study area: Macedonia: “ Megapus pavesii “ Georgiev (1957) , Schwoerbel (1963).

Rejected identifications: Greece: “ Atractides acutirostris ” (err., non Motaş & C. Angelier) K. Viets (1950), Gerecke (2003).

Habitat: Rhithrobiont.

Distribution: Rarely recorded from scattered areas in Europe.

Genus Hygrobates Koch, 1837

Hygrobates (Hygrobates) calliger Piersig, 1896

New records: Montenegro: Danilovgrad, River Zeta near Spuž, 41 m a.s.l., 42°30'39,63''N 19°11´52,99''E, 16.vi.1999 Pešić (3/4/0); Danilovgrad, stream Rimanić, 53 m a.s.l., 42°31'33,10''N 19°11'34,85''E, 24.vi.2001 Pešić (0/0/1); Plav, village Murino, Murinska River, 42°36'38,13''N 19°55'14,27''E, 940 m a.s.l., 03.x.2009 Pešić (1/0/0); Serbia: S Serbia, River Pčinja nera Trgovište, 42°22'N 22°03'E, 30.iv.2006 Pešić (0/1/0); Bulgaria: Sofia area: Cherni Iskar River , 1012 m a.s.l., 42 о 17'123''N 23 о 31'997''E, 16.viii.2005 Kenderov (1/0/0); Iskar River nera Staroselci village , 17.viii.2004 Kenderov (1/0/0); Greece: GR6p Evia Island , the region of Ochi , Agios Dimitrios Gorge , Porfyras Ravine stream, 30.vi.2007 Pešić (0/2/1); Sparta : GR23p River Evrotas near Sparta city, 03.vii.2007 Pešić (0/3/0); GR24p stream Kelafina , a tributary of Evrotas river , 03.vii.2007 Pešić (1/2/0); Thessalia, Trikala. River Pinios, approx. 4 km upstream of Kalambáka , 07.v.1997 Smit (0/1/0); Crete: stream E of Filaki, 27.iv.1987 Smit (2/0); stream S of Moundos (S of Rhetima), 27.iv.1987 Smit (1/0); Lesbos , stream Evergetoulas , 02.v.2000 Smit (2/2/0) .

Records from the study area: Croatia: K. Viets (1936), Pešić (2002f); Bosnia and Hercegovina: Motaş et al. (1948); Montenegro: K. Viets (1936); Serbia: (laps.: Hydrobates ) Živić et al. (2002), Pešić (2003d, e); Macedonia: Schwoerbel (1963), Pešić (2005), Baker et al. (2008); Bulgaria: K. Viets (1926), Arndt (1943), Petrova (1971), Scheffler (1974).

Remarks: New for Greece.

Habitat: Rhitrobiont.

Distribution: Palaearctic.

Hygrobates (Hygrobates) fluviatilis (Ström, 1768)

New records: Bulgaria: Samokov, Iskar River above “Iskar dam”, interstitial, 833 m a.s.l., 42 о 25'831''N 23 о 31'900''E, 13.xi.2004 Kenderov (0/1/0); Iskar River above Pelovo town , 20.xi.2004 Kenderov (0/1/0); Iskar River near Orehovica village , 19.xi.2004 Kenderov (1/3/0); Iskar River near Kojnare village , 20.xi.2004 Kenderov (0/4/0); Eastern Rhodopes , tributary of Pecelarska River , 3 km from Asenovgrad , 23.iv.2006 Pešić (0/1/0); Greece: Northern Greece: Thessalia: River Xerias , 2 km downstream of Damasi , NW of Larissa, 07.v.1997 Smit (1/0/0); Trikala , River Pinios , approx. 4 km upstream of Kalambáka , 07.v.1997 Smit (1/0/0); Ipiros, stream at junction of road E90 and road to Konitsa 05.v.1997 Smit (1/0/0); Crete, mouth of river in Kalives , 28.iv.1987 Smit (46/0); Lesbos : stream Evergetoulas , 02.v.2000 Smit (1/1/0); ibid., 02.v.2000 Smit (2/1/0); stream Salantas , 04.v.2000 Smit (3/0/0) .

Records from the study area: Croatia: K. Viets (1936), Pešić (2002f); Bosnia and Hercegovina: Motaş et al. (1948), Schwoerbel (1963), Pešić (2003h); Montenegro: “ H. reticulatus “ Musselius (1912) , Pešić (2002c, 2004a); Albania: Pešić (2003i); Serbia: “ Hygrobates fluviatilis (naicus)“ Ratajac & Rajaković (1992), Pešić (2003e); Macedonia: K. Viets (1936), Georgiev (1957), Schwoerbel (1963), Pešić (2005). Bulgaria: Petrova (1971), Pešić (2006); Greece: “ H. fluviatilis ?“ Stephanides (1971).

Habitat: Rhitrobiont; tolerant against organic pollution ( Gerecke & Schwoerbel 1992).

Distribution: Europe, Asia Minor, Iran.

Hygrobates (Hygrobates) foreli (Lebert, 1874)

Records from the study area: Montenegro: Pešić (2003g); Bulgaria: Petrova (1971); Greece: “ H. foreli ?“ Stephanides (1971).

Habitat: Pools of streams.

Distribution: Palaearctic.

Hygrobates (Hygrobates) longipalpis (Hermann, 1804)

New records: Montenegro: Podgorica, River Sitnica, 31 m a.s.l., 42°26'N 19°12'E, 29.viii.2000 Pešić (1/0/ 0); Greece: GR17p Evia , the region of Ochi , Aetos stream near Aetos vill (near Karystos town ), 01.vii.2007 Pešić (0/3/0); GR26p Sparta , Evrotas River near Vivari spring, 04.vii.2007 Pešić (1/2/0); GR27p Region of Githio city, Vasilopotamus river near Skala town , 04.vii.2007 Pešić (0/1/0); Epirus, Ioánnina , large limnocrene near Amphitene , near Lake Ioánnina , 06.v.1997 Smit (2/21/0); Lesbos , stream Tsiknias , NW of Agia Paraskevi, 29.iv.2000 Smit (1/3/0); Crete: mouth of river in Kalives , 28.iv.1987 (1/0/0); well Lassithi plain, near Psihro , 05.v.1987 Smit (1/2/0); pools near coast, W of Frangokastello, 28.iv.1987 Smit (4/0/0); stream Geropotamos at Timbaki , 07.v.1987 Smit (0/1/0) .

Records from the study area: Bosnia and Hercegovina: Schwoerbel (1963), Pešić (2003h); Montenegro: Musselius (1912), Pešić (2002c, 2004a, b), Baker et al. (2008); Albania: Pešić (2003i); Serbia: K. Viets (1936), Ratajac & Rajaković (1992), Pešić (2003e); Macedonia: K. Viets (1936), Georgiev (1957), Pešić (2003j), Baker et al. (2008); Bulgaria: K. Viets (1935b, 1940), Petrova (1971); Greece: Stephanides (1971).

Habitat: Standing and slowly flowing waters.

Distribution: Holarctic.

Hygrobates (Hygrobates) longiporus Thor, 1898

New records: Bulgaria: Sofia area: Cherni Iskar River, 1012 m a.s.l., 42 о 17'123''N 23 о 31'997''E, 16.viii.2005 Kenderov (0/1/0); Greece: Makedonia, Kozani , stream Pramoritsa , E of Mórfi (E of Kozani), 05.v.1997 Smit (0/4/0); Crete , stream E of Filaki, 27.iv.1987 Smit (0/1/0); Lesbos : drinking fountain fed by spring, between Agra and Messotopos, 09.v.2000 Smit (0/9/0); Potamia River , upper east branch, 01.v.2000 (3/8/1); stream Mylopotamos , 06.v.2000 Smit (0/2/1) .

Records from the study area: Montenegro: Pešić (2002c); Serbia: Pešić (2003e); Macedonia: K. Viets (1936), Georgiev (1957), Pešić (2005); Bulgaria: Petrova (1971).

Remarks: New for Greece.

Habitat: Pools of streams, spring ponds, canalized lowland streams.

Distribution: Palaearctic.

Hygrobates (Hygrobates) nigromaculatus Lebert, 1879

New records: Bosnia and Hercegovina : River Neretva near Mostar, 43°21'N 17°49'E, 12.xi.2006 Pešić (1/ 3/0) .

Remarks: For a long time, Hygrobates nigromaculatus has been treated as a single species inhabiting both lakes and streams. Recently, Martin et al. (2010) shows that the lentic (lake inhabiting) populations belong to H. nigromaculatus Lebert, 1897 , while lotic (stream inhabiting) populations belong to H. setosus Besseling, 1942 . New for Bosnia and Hercegovina

Habitat: Large rivers.

Distribution: Palaearctic.

Hygrobates (Hygrobates) porrectus Koenike, 1908

Records from the study area: Bulgaria: Petrova (1976a).

Habitat: Rhitrobiont.

Distribution: Europe.

Hygrobates (Hygrobates) properus Láska, 1954

Records from the study area: Bulgaria: Petrova (1976a).

Habitat: Rhitrobiont.

Distribution: Europe.

Hygrobates (Hygrobates) trigonicus Koenike, 1895

New records: Greece: Makedonia: Xanthi, River Nestos (in delta), 28.iv.1997 Smit (2/0/0); Lesbos, stream Evergetoulas, 04.v.2000 Smit (2/0/0); ibid., 02.v.2000 Smit (8/11/0).

Records from the study area: Bulgaria: Petrova (1968b, 1971).

Remarks: New for Greece.

Habitat: Rhitrobiont, occasionally in hyporheic interstitial.

Distribution: Western Palaearctic.

Hygrobates (Rivobates) diversiporus Sokolow, 1927

Records from the study area: Macedonia: “ Rivobates diversiporus “ Stanković (1931, 1960 ), K. Viets (1936), Bader (1955), Georgiev (1957), Pešić (2003j), Baker et al. (2008); Bulgaria: Petrova (1971).

Habitat: Lakes; spring rich in detritus and vegetation.

Distribution: SE Europe to Siberia.

Hygrobates (Rivobates) norvegicus (Thor, 1897)

Records from the study area: Montenegro: Pešić (2003g, 2004a); Macedonia: Pešić (2005); Bulgaria: Pešić (2006).

Habitat: Crenobiont or crenophilous; with preference for detritus-rich habitats.

Distribution: Central, southern and south-eastern Europe.

Genus Mesobates Thor, 1901

Mesobates forcipatus Thor, 1901

Records from the study area: Greece: Gerecke (2000).

Habitat: Slowly flowing order of lowland stream.

Distribution: Northern Europe, one site recorded from the Balkan.

Genus Mixobates Thor, 1905

Mixobates incurvatus (Láska, 1954)

Records from the study area: Greece: Tuzovskij & Gerecke (2003).

Habitat: Mossy riffles of low-order streams.

Distribution: Central and southern Europe.

Figures

FIGURE 4A–D. Atractides stankovici sp. nov., male: A = I–L–5–6; B = genital field; C = palp, lateral view; D = palp, medial view. Scale bar = 100 µm.

FIGURE 5A–D. Atractides stankovici sp. nov., female: A = genital field; B = I–L–5–6; C = palp, medial view; D = palp, lateral view. Scale bar = 100 µm.

FIGURE 6A–C. Atractides sp. 1, female: A = idiosoma, dorsal view; B = idiosoma, ventral view; C = I-Leg. Scale bars = 100 µm.

FIGURE 7A–B. Atractides sp. 1, female: A = palp, medial view; B = palp, lateral view. Scale bar = 100 µm.

FIGURE 8A–C. Atractides sp. 2, female: A = idiosoma, ventral view; B = palp, medial view; C = genital field. Scale bars = 100 µm.

FIGURE 9A–B. Atractides sp. 2, female: A–B = I-L-5 and -6. Scale bar = 100 µm

FIGURES 10A–C. Atractides sp. 3, female (A = specimen from Mylopotamos, B = specimen from stream Krioneri, C = specimen from stream Evergotoulos): A = idiosoma, ventral view; B–C = posterior part of idiosoma, ventral view. Scale bar = 100 µm.

FIGURE 11A–D. Atractides sp. 3, female (B–D = specimen from Mylopotamos, A = specimen from stream Evergotoulos): A–B = I-L-5 and -6; C = palp, lateral view; D = palp, medial view. Scale bars = 100 µm.

FIGURE 12A–C. Atractides lacustris (Lundblad, 1925), male: A = idiosoma, ventral view; B = I-L-5 and -6; C = IV-L- 6. Scale bars = 100 µm.