Review of the genus Onychiurus Gervais, 1841 (Collembola: Onychiuridae) with description of a new cave species from Southern Spain Author Arbea, Javier text Zootaxa 2012 3564 33 46 journal article 10.5281/zenodo.209507 8349ed10-9886-46f0-a15e-226496c8bc26 1175-5326 209507 Key to the world species of Onychiurus 1 Th. I without dorsal pseudocelli......................................................................... 2 - Th. I with dorsal pseudocelli.......................................................................... 18 2 Th. I–III with 0,2,2 dorsal pseudocelli.................................................................... 3 - Th. I–III with 0,3,3 dorsal pseudocelli.................................................................... 7 3 Abd. IV with 3+3 dorsal pseudocelli............................................................... O. wilchi - Abd. IV with more dorsal pseudocelli.................................................................... 4 4 Abd. IV with 4+4 dorsal pseudocelli............................................................ O. gulinensis - Abd. IV with 5+5 dorsal pseudocelli...................................................................... 5 5 Abd. I without ventral pseudocelli.............................................................. O. saphianus - Abd I with 1+1 ventral pseudocelli...................................................................... 6 6. Abd. IV without ventral pseudocelli............................................................... O. bhattii - Abd. IV with 2+2 ventral pseudocelli.......................................................... O. steinmanni 7 Abd. IV with 3+3 dorsal pseudocelli...................................................................... 8 - Abd. IV with more dorsal pseudocelli.................................................................... 15 8 Abd. I–III with 4,4,4 dorsal pseudocelli........................................................ O. gevi sp. nov. - Abd. I–III with 3,3,3 dorsal pseudocelli ( obsiones group sensu Kaprus’, 2008).................................... 9 9 Sense organ of Ant. III with 4 papillae................................................................... 10 - Sense organ of Ant. III with 5 papillae................................................................... 11 10 Formula of parapseudocelli on Abd. sterna as 11100; Ratio length AS /inner edge of claw III 1.00–1,27......... O. vtorovi - Formula of parapseudocelli on Abd. sterna as 11101; Ratio length AS /inner edge of claw III 0.66–1.00........... O. darii 11 Th. I with 6+6 dorsal chaetae; distal whorl on tibiotarsi with 7 chaetae.......................................... 12 - Th. I with 7+7 dorsal chaetae; distal whorl on tibiotarsi with 9 chaetae.................................... O. jaceki 12 Sense organ of Ant. III with 4 guard chaetae.............................................................. 13 - Sense organ of Ant. III with 5 guard chaetae..................................................... O. sarmaticus 13 VT with 1+1 chaetae at base. Abd. V tergum with a3 as macrochaetae ( a3 chaeta longer than a1 )............. O. obsiones - VT without chaetae at base............................................................................ 14 14 Abd. V tergum with a3 as macrochaetae ( a3 chaeta longer than a1 ); empodial appendage half as long as inner edge of claw............................................................................................ O. szeptyckii - Abd. V tergum with a3 as microchaetae ( a3 chaeta shorter than a1 ); empodial appendage as long as inner edge of claw............................................................................................ O. orienteuropeus 15 Abd. IV with 4+4 dorsal pseudocelli.................................................................... 16 - Abd. IV with 5+5 dorsal pseudocelli.................................................................... 17 16 Th. I–III without ventral pseudocelli.............................................................. O. boldorii - Th. I.III with 1,1,1 ventral pseudocelli............................................................ O. stillicidii 17 Abd. I–II with 1+1 ventral pseudocelli. Empodial lamella present..................................... O. nathanieli - Abd. I–II with 2+2 ventral pseudocelli. Empodial lamella absent........................................ O. paoletti 18 Th. I–III with 3,3,5 dorsal pseudocelli............................................................. O. willemi - Th. I–III with 1(2),3(2),3(2) dorsal pseudocelli............................................................ 19 19 Abd. V with 3+3 dorsal pseudocelli..................................................................... 20 - Abd. V with 4+4 dorsal pseudocelli..................................................................... 35 20 Abd. IV with 3+3 dorsal pseudocelli......................................................... O. polychaetosus - Abd. IV with more dorsal pseudocelli................................................................... 21 21 Abd. IV with 4+4 dorsal pseudocelli.................................................................... 22 - Abd. IV with 5+5 dorsal pseudocelli.................................................................... 26 22 Head with 1+1 ventral pseudocelli........................................................... O. decemsetosus - Head with 2+2 ventral pseudocelli...................................................................... 23 23 Abd. IV with 1+1 ventral pseudocelli................................................................... 24 - Abd. IV with 2+2 ventral pseudocelli.................................................................... 25 24 Abd. I with 2+2 ventral pseudocelli................................................... O. subambulans (partim) - Abd. I without ventral pseudocelli.............................................................. O. antennalis 25 Abd. II with 1+1 ventral pseudocelli............................................................ O. ariegicus - Abd. II with 2+2 ventral pseudocelli................................. O. ambulans sensu Stach, 1934 & Gisin, 1956 26 Head with 2+2 ventral pseudocelli...................................................................... 27 - Head with 3+3 ventral pseudocelli...................................................................... 32 27 Abd. IV with 1+1 ventral pseudocelli................................................. O. subambulans (partim) - Abd. IV with 2+2 ventral pseudocelli................................................................... 28 28 Abd. I with 1+1 ventral pseudocelli...................................................................... 29 - Abd. I with 2+2 ventral pseudocelli.................................................. O. circulans from Madeira 29 Abd. II with 1+1 ventral pseudocelli.................................................................... 30 - Abd. II with 2+2 ventral pseudocelli.......................................................... O. furcisetosus 30 Dorsal macrochaetae apically rounded......................................................... O. confugiens - Dorsal macrochaetae forked at the tip................................................................... 31 31 Formula of parapseudocelli on Abd. sterna as 101003 . Males with ventral organ....................... O. rectospinatus - Formula of parapseudocelli on Abd. sterna as 111003 . Males without ventral organ......................... O. reluctus 32 Th. I–III without ventral pseudocelli.......................................................... O. dissimulans - Th. I–III with 0,1,1 ventral pseudocelli.................................................................. 33 33 Abd. III with 2+2 ventral pseudocelli......................................................... O. subcirculans - Abd. III with 1+1 ventral pseudocelli................................................................... 34 34 Abd. II with 1+1 ventral pseudocelli.............................................................. O. movilae - Avd. II with 2+2 ventral pseudocelli............................... O. circulans ; O. ambulans sensu Pomorski, 1998 35 Abd. IV with 5+5 dorsal pseudocelli.................................................................... 36 - Abd. IV with 6+6 dorsal pseudocelli............................................................ O. penetrans 36 Head with 2+2 ventral pseudocelli...................................................................... 37 - Head with 3+3 ventral pseudocelli...................................................................... 38 37 Abd. I–IV with 1,2,1,1 ventral pseudocelli...................................................... O. reluctoides - Abd. I–IV with 2,2,2,1 ventral pseudocelli........................................................... O. ortus 38 Abd. IV with 1+1 ventral pseudocelli........................................................... O. sublegans - Abd. IV with 2+2 ventral pseudocelli................................................................... 39 39 Abd. III with 1+1 ventral pseudocelli............................................................... O. arans - Abd. III with 2+2 ventral pseudocelli........................................................... O. insinuans