Dendrobaena alexandrii, Szederjesi, T., PAVLÍčEK, T. & Csuzdi, Cs., 2013

Szederjesi, T., PAVLÍčEK, T. & Csuzdi, Cs., 2013, New Earthworm Species From Jordan (Oligochaeta, Lumbricidae), Acta Zoologica Academiae Scientiarum Hungaricae 59 (4), pp. 391-400 : 392-394

Dendrobaena alexandrii sp. n.

(Figs 1–4)

Dendrobaena sp. PAVLÍčEK & CSUZDI 2006: 185.

Holotype. HNHM/14882 UmmQais, smallvalley, 03.13.2005, leg. T. Pavlíček . Paratype. HNHM/16351 1 ex., hillsnearoftheroadfromJerashtoIrbid, 32°23’N

35°49’E, 25.02.2007, leg. T. Pavlíček .

Etymology. ThenewspeciesisnamedinhonourofthelateSándorMahunkathe worldrenownedOribatidataxonomist (ΑλέξανδΡΟΣGreek = SándorinHungarian).

Diagnosis. Length 54–65 mm, diameter 4.5–5 mm, setaedistant. Pigmen- tationred- violet. Firstdorsalporein 5/6. Clitellumon ½25–35, tubercleson 32–33. Maleporeon 15, surroundedbyaglandularcrescent. Nephridialpores irregularlyalternatebetweensetalline b andabove d. Threepairsofvesicles in 9, 11, 12; spermathecaetwopairsin 9/10,10/ 11 in d. Calciferousglandsin 11 and 12. Heartsinsegments 6–11, nephridialbladderssausage- shaped.

Externalcharacters. Holotype: 65 mmlongand 5 mmwide; numberofsegments 125. Paratype: 54 mmlongand 4.5 mmwide; numberofsegments 133. Colourred- violet. Prostomiumtanylobous. Firstdorsalporeinintersegmentalfurrow 5/6. Setaedistant. Setal arrangementbehindtheclitellum: aa: ab: bc: cd: dd = 2.6:1.3:2.1:1:4.1 (Fig. 1). Maleporelarge on 15, betweensetae b–c, surroundedbyaglandularcrescentprotrudingintotheneighbouringsegments. Nephridialporesirregularlyalternatebetweensetalline b andabove Figs 1–4. D. alexandrii sp. n.: 1 = setalarrangement, 2 = clitellarregion (Cl = clitellum, Tb = tubercle, Mp = malepore), 3 = genitalsetaefromsegment 9, 4 = longitudinalmusculature. d. Clitellumonsegments ½25–35, tuberculapubertatisonsegments 32–33, hardlyvisible (Fig. 2). Genitalpapillaesurroundsetae a, b onsegment 9. Genitalsetaof 9 b 1.15 mmlong and 0.025 mmwide, spear- shaped (Fig. 3).

Internalcharacteristics. Dissepiments 11/12–13/14 slightlythickened. Testesandfun- nelsfree, pairedinsegments 10–11. Seminalvesiclespresentin 9, 11 and 12. Spermathecae twopairsin 9/10 and 10/11 withexternalopeningsinsetalline d. Calciferousglandsin 11 and 12. Pairedheartsinsegments 6–11, extraoesophagealslacking. Nephridialbladders simple, sausage- shaped. Cropinsegments 15–16, andgizzardinsegments 17–18. Typhosolismultilobed. Longitudinalmusclelayerofpinnatetype (Fig. 4).

Remarks. Dendrobaena alexandrii sp. n. is most similar to D. samarigera ( Rosa, 1893), however, differsfromitinthepositionoftheclitellum (½25–35 vs 28–34,35) thepresenceofspermathecaeandtubercles. Probably, D. alexandrii isthesisterspeciesof D. samarigera retainingthethecalmeansofsperm exchangewhile samarigera movedcompletelytophoralinsemination.