Arphthicarus paratinctus, Niedbala, Wojciech & Stary, Josef, 2015

Niedbala, Wojciech & Stary, Josef, 2015, Two New Species Of The Superfamily Phthiracaroidea (Acari, Oribatida) From The Seychelles And The Usa With Notes On Other Ptyctimous Mites From Diverse Countries, Acta Zoologica Academiae Scientiarum Hungaricae 61 (2), pp. 87-118 : 88-92

Arphthicarus paratinctus sp. n.

( Figs 1A–E)

Materialexamined – HolotypedepositedatDATEfromthelocustypicus: SEY-005, Seychelles, Mahé, Morne, 3.XII. 1975, 750 m, deciduousforest, leaflittersample, legA. Fjellberg .

Etymology – Thenameofthespecies, paratinctus , alludestothesimilarityofthenew

speciesto Arphthicarustinctus Niedbała, 2000.

Measurementsofholotype – Prodorsum: length 202, width 134, height 73, sensillus 20, lengthofprodorsalsetae: interlamellar (in) 28, lamellar (le) 20, rostral (ro) 35; noto- gaster: length 343, width 227, height 217, length of notogastral setae: c 1 61, h 1 51, ps 1 48; genitoaggenitalplate 88 × 73, anoadanalplate 126 × 76.

Description – Colourlightbrown. Cuticlewellsculpturedwithweakconcavities.

Prodorsumwithsigillarfieldsnotverydistinct, medianfieldlarge. Lateralcarinae absent. Sensilliwithshort, narrowpedicelandglobularhead, rough. Prodorsalsetaevery short, spiniform, rough, rostralsetae (ro) thelongest.

Notogasterwith 15 pairsofshortspiniform, roughnotogastralsetaetaperingdis- tally, c 1 / c 1 - d 1 = 0.75. Setae c 1 near anterior border, setae c 3 slightly remote and setae c 2 far fromanteriornotogastralborder. Vestigialsetaeinvisible. Threepairsoflyrifissures im, ip and ips present.

Ventralregion. Setae h ofmentumslightlylongerthandistancebetweenthem.

Genitoaggenitalplateswithninepairsofgenitalsetaewitharrangement: 4+2: 3. Anoadanalplateseachwithfivepairsofsetae, setae ad 3 smallest, setae ad 2 longestandsituatednearsetae ad

1

andnearparaxialborderofplate.

Legs. Formulaeofsetaeandsolenidiaofcompletetype. Setae d offemoraIlongand considerablyremotefromdistalendofarticle, setae l’’ situatedneardistalend.

Comparison – Thenewspeciesisslightlysimilarto Arphthicarustinctus Niedbała, 2000 fromNewCaledoniaintheshapeofthesensilli, lengthof prodorsalsetae, implantationandarrangementofsetaeoffemoraI, butis distinguishablebytheshapeofthenotogastralsetaeandthearrangementof genital, analandadanalsetae ( NIEDBAŁA 2000).

Atropacarus (Atropacarus) paraclavigerus sp. n.

( Figs 2A–I)

Materialexamined – HolotypedepositedatDATEfromthelocustypicus: USA-195, California, HumboldtCounty , Patrick‘sPointStatePark, 21. VI.1991,41°08’N, 124°10’W, co- niferousforestwithspruce Piceasitchensis, sampleofconiferouslitterandsoil, legK. Horner .

Etymology – Thespecificepithet, paraclavigerus , alludestotheresemblanceofthe

newspeciesto Atropacarus (Atropacarus) clavigerus (Berlese, 1904) .

Measurementsofholotype – Prodorsum: length 202, width 126, height 86, sensillus 68, lengthofprodorsalsetae: interlamellar (in) 23, lamellar (le) 15, rostral (ro) 20, exobo- thridial (ex) 10; notogaster: length 348, width 227, height 207, lengthofnotogastralsetae: c

1

18, h

1

23, ps

1

18; genitoaggenital plate 81 × 58, anoadanal plate 81 × 40.

Description – Colourlightgrey. Cuticlewellsculpturedwithdistinctconcavities.

Prodorsumwithlongandnarrowsigillarfields. Lateralcarinaedistinct. Sensilli sickle- shaped, coveredwithsmallspinesatdistalhalf. Prodorsalsetaeshort, coveredwith minuteanddensespines, theirrelativelengths in> ro> le> ex.

Notogasterwith 21 pairsofnotogastralsetae, additionalsetaeinrows c, h and ps, veryshort (c l <1/4 c 1 – d 1), denselycoveredwithspines, tuft- like. Setae c 1–3 farfromtheante- riornotogastralmargin, with c 2 furthestaway. Vestigialsetaeinvisiblebecauseofstrong sculpture. Twopairsoflyrifissures (ia and im) present.

Ventralregion. Setae h ofmentumshorterthandistancebetweenthem. Anoadanal plateswithminutesetae, an / not = 0.02. Setationoflegscomplete; v” / v’ = 4.

trochanterandfemuroflegI.

plates, lateralview, I = trochanterandfemuroflegI.

Comparison – ThenewspeciesisverysimilartotheWesternPalaearctic species Atropacarus (Atropacarus) clavigerus (Berlese, 1904) . Themorphologi- caldifferencesareverysmall: thenumber (21) ofnotogastralsetae (in A. (A.) clavigerus 20 pairs), setae h ofmentumshorterthanthedistancebetweenthem (longerin A. (A.) clavigerus ) andsetae l” offemoraIinsertedmoreposteriorly thanin A. (A.) clavigerus (seeNIEDBAŁA 2011).

ADDITIONAL DESCRIPTIONS AND TAXONOMICAL NOTES WITH SOME MORPHOLOGICAL REMARKS

Mesoplophora (Mesoplophora) parabacilla Niedbała, 2006

( Figs 3A–D)

Materialexamined – TwospecimensdepositedatDATEfromthelocality: COL–009, Colombia, Meta, Carimagua , 15.IV.1983, nativepasture, savannas, handsampling, legJ. M. Guerrero .

Measurementsofonespecimen – Lengthofprodorsum 364, lengthofnotogaster 520.

Exobothridialsetae (ex) longerthandiameterofbothridia.

Remarks – NewforthefaunaofColombia. SpecimensfromColombia areslightlylargerthanspecimensfromPanama (NIEDBAŁA 2006).