Oncopodura, Carl & Lebedinsky, 1905

Updated key to European species of genus Oncopodura View in CoL

The following key was prepared based on the diagnostic characters of worldwide Oncopodura species (adapted from Szeptycki 1977, Mari Mutt 1984, Christiansen & Bellinger 1998 and Mehrafrooz Mayvan et al. 2024). This should be considered a tentative key, since the limited data on several important characters in some species included. *considered as species inquirenda, due to insufficient or doubtful data in the original description

1. Without PAO........................................................................................ 2

- With PAO........................................................................................... 6

2. With 4 medial sensilla on Ant IV........................................................................ 3

- With more than 4 medial sensilla on Ant IV............................ O. lebretoni Deharveng, 1988 ( France, cave)

3. Mucro with 4 teeth.................................................................................... 4

- Mucro with 5 teeth.......................... O. fadriquei Jordana & Baquero in Jordana et al., 2012 ( Spain, cave)

4. Dens with at least 1 basal dorsointernal hooks; with at most 2 blunt sensilla on Ant II............................... 5

- Dens without basal dorsointernal hooks; with 13 blunt sensilla on Ant II..... O. jauzioni Deharveng, 1988 ( France, cave)

5. Unguis basal lamella shorter than or equal to half the length of the unguis; Dens with 1 distal dorsoexternal hook and 1 distal dorsointernal hook......................................... O. hamata Carl & Lebedinsky, 1905 (Crimea, cave)

- Unguis basal lamella longer than half the length of the unguis; Dens without distal dorsoexternal hook and with 2 distal dorsointernal hooks......................................... O. occidentalis Bonet, 1931 ( Spain & France, cave)

6. PAO with 1 simple lobe................................................................................ 7

- PAO with 3 or more lobes............................................................................. 10

7. Unguis basal lamella shorter than or equal to half the length of the unguis........................................ 8

- Unguis basal lamella longer than half the length of the unguis................................................. 9

8. Claw normal; Ant IV with rounded sensilla.............. O. gledensis Baquero, Vadell & Jordana, 2007 ( Spain, cave)

- Claw elongated; Ant IV with short sensilla..................... O. cavernarum Stach, 1934 ( Italy and Slovenia, cave)

9. Ant IV without basal blunt sensilla; Ant II with 4 blunt sensilla.................. O. ochokochi sp. nov. ( Georgia, cave)

- Ant IV with 1 basal blunt sensillum; Ant II without sensilla................................................................................... O. siquierae Seminario-Cordova, Baquero, Jordana & Vadell, 2018 ( Spain, cave)

10. PAO with 3 lobes............................................... O. tricuspidata Cassagnau, 1964 ( France, cave)

- PAO with 4 or more lobes............................................................................. 11

11. PAO with 4 lobes.................................................................................... 12

- PAO with more than 4 lobes........................................................................... 14

12. Dens with 1 basal dorsointernal hook; with unguis basal lamella............................................... 13

- Dens with 2 basal dorsointernal hooks; without unguis basal lamella.................................................................................................. O. meridionalis Cassagnau, 1959 ( Spain, beech humus)

13. Ant IV without basal sensilla; Dens with 1 distal dorsointernal hook............ O. vioreli Gruia, 1989 ( Romania, cave)

- Ant IV with 1 basal sensillum; Dens with 2 distal dorsointernal hooks....................................................................... O. jugoslavica Absolon & Kseneman, 1932 ( Bosnia & Herzegovina and Croatia, cave)

14. PAO with 6 simple lobes.............................................................................. 15

- PAO with 6 lobes subdivided into 2 or more fingers........................................................ 16

14. PAO with 6–8 simple lobes; with elongated s setae on Abd V................... O. pegyi Gruia, 1994 ( Romania, cave)

- PAO with 6 simple lobes; s setae on Abd V not elongated.................................................... 15

15. Basal tubercle with 1 ciliated seta and 1scale; unguis normal......................................................................... O. crassicornis Shoebotham, 1911 ( England, France, Poland and Hungry, eipigeic and cave)

- Basal tubercle with 2 ciliated setae; unguis much slender................... O. pelissiei Deharveng, 1988 ( France, cave)

16. Some PAO lobes simple and some lobes subdivided into 2 fingers. Ant IV with 4 medial sensilla. Dens without basal dorsoexternal hooks, with 1 distal dorsoexternal hook. Dens with 2 basal and 2 distal dorsointernal hooks.............................................................................. O. reyersdorfensis Stach, 1936 ( Poland, cave)

- PAO lobes subdivided into 2–3 fingers. Ant IV with 4 medial sensilla. Dens without basal dorsoexternal hooks, with 1 distal dorsoexternal hook. Dens with 3 basal and 4 distal dorsointernal hooks................................................................................................ O. dethieri Janssens & De Bruyn, 2010 ( Belgium, cave)

- PAO lobes subdivided into 3 fingers. Ant IV without medial sensilla. Dens with 1 basal and 2 distal dorsoexternal hooks. Dens with 1 basal and 1 distal dorsointernal hook......... O. egerszogensis Loksa, 1961 ( Hungary, cave), species inquirenda*