Published December 31, 2015 | Version v1
Taxonomic treatment Open

Pediculaster Khaustov, 2015, sp. nov.

Description

Key to phoretic females of the genus Pediculaster of Palaearctic

(Pediculaster limosinae Samsinak, 1984 is not separable from P. sellnickianus and is probably a junior synonym of P. sellnickianus; Pediculaster incompletus Samsinak, 1984 is not separable from P. morelliae and is probably a junior synonym of P. morelliae)

1. Coxal fields I with 2 pairs of setae (1 c absent)............................................................. 2

- Coxal fields I with 3 pairs of setae....................................................................... 5

2. Apodemes 5 well-developed........................................................................... 3

- Apodemes 5 absent.................................................... P. minagarici Gao and Zou, 2000. China

3. Dorsal hysterosomal setae relatively short: setae d distinctly shorter than distance d–d.............................. 4

- Dorsal hysterosomal setae very long: setae d distinctly longer than distance d–d........ P. arcanus (Rack, 1967). Germany

4. Setae e and h 2 subequal, setae v 1 more than three times longer than v 2............ P. subarcanus Gao and Zou, 2000. China

- Setae e about 3 times longer than h 2, setae v 1 less than 2 times longer than v 2.. P. ermilovi sp. nov. Russia (Western Siberia).

5. Setae (u) of tibiotarsus I fused together forming structure opposing to tarsal claw.................................. 6

- Setae (u) of tibiotarsus I separated, spine-like....... P. amerahae Sevastianov and Abo-Korah, 1984. Egypt, Turkmenistan

6. Coxal fields II with 2 pairs of setae...................................................................... 7

- Coxal fields II with 3 pairs of setae..................................................................... 13

7. Setae h 2 shorter than h 1................................................................................ 8

- Setae h 2 about 2 times longer than h 1........................................... P. m a n i c a t u s (Berlese, 1904). Italy

8. Setae v 1 and v 2 subequal............................................................................... 9

- Setae v 1 longer than v 2............................................................................... 10

9. Apodemes 5 long, reaching almost to bases of setae 4 b, setae e about 5 times longer than h 2.................................................................................................. P. athiasae (Wicht, 1970). Palaearctic

- Apodemes 5 short, reaching bases of setae 4 a, setae e about 3 times longer than h 2...................................................................................... P. sterculinicola Sevastianov, 1981. Ukraine, Russia (Crimea).

10. Empodia on tarsi II and III with rounded tips, setae f shorter or subequal to h 1................................... 11

- Empodia on tarsi II and III with pointed tips, setae f much longer than h 1................ P. m e n d l i Rack, 1976. Germany

11. Setae f and h 1 subequal............................................................................... 12

- Setae f distinctly shorter than whip-like h 1....................................... P. w e i d n e r i Rack, 1976. Germany

12. Solenidion φ 1 situated close to ω 1............................. P. pfefferianus Samsinak, 1984. Spain, Russia (Crimea)

- Solenidion φ 1 situated close to φ 2.................................... P. muraiae Mahunka and Zaki, 1984. Hungary

13. Setae tc” of tarsus IV situated on distinct protuberance..................................................... 14

- Setae tc” of tarsus IV not on protuberance............................................................... 15

14. Setae h 1 long, whip-like, much longer than f.............................. P. calcaratus (Mahunka, 1965). Palaearctic

- Setae h 1 short, blunt-ended, subequal to f.............................. P. ensifer (Savulkina, 1978). Bulgaria, Ukraine

15. Three pairs of pseudanal setae......................................................................... 16

- Two pairs of pseudanal setae.................................. P. turkiensis (Ramaraju and Madanlar, 1997). Turkey

16. Setae ps 3 distinctly longer than ps 2...................................................................... 17

- Setae ps 2 distinctly longer than ps 3....................................................................... 27

17. Setae ps 1 and ps 2 subequal............................................................................ 18

- Setae ps 1 distinctly shorter than ps 2.............................. P. sklarii Sevastianov and Chydyrov, 1994. Ukraine

18. Setae v 1 subequal to or longer than v 2.................................................................... 19

- Setae v 1 distinctly shorter than v 2.......................... P, hungaricus Mahunka and Zaki, 1982. Hungary, Ukraine.

19. Setae v 1 distinctly longer than v 2........................................................................ 20

- Setae v 1 subequal to v 2............................................................................... 21

20. Setae 2 b about 2 times longer than 2 a.................................... P. j a n v a r y o r u m Mahunka, 1986. Hungary.

- Setae 2 b extremely long, more than 3 times longer than 2 a................... P. mongolicus Mahunka, 1970. Mongolia

21. Setae e and h 2 subequal.............................................................................. 22

- Setae e distinctly longer than h 2........................................................................ 23

22. Setae 2 b much longer than 2 a.............................................. P. dudichi Mahunka, 1970. Hungary

- Setae 2 b and 2 a subequal................................................... P. ignotus (Krczal, 1959). Germany

23. Setae 2 b not longer, or slightly longer than 2 a............................................................. 24

- Setae 2 b about 4 times longer than 2 a............... P. chistyakovi Khaustov and Ermilov, 2008. Russia (European part)

24. Bases of setae h 1 situated very close to bases of h 2......................................................... 25

- Bases of setae h 1 and h 2 distinctly separated from each other................................................. 26

25. Apodemes 5 present, solenidion φ 1 situated closer to setae p” than to solenidion φ 2.... P. dudinskii Khaustov, 2011. Ukraine

- Apodemes 5 absent, solenidion φ 1 situated close to solenidion φ 2... P. zachvatkini (Savulkina, 1978). Russia (European part)

26. Setae 3 a, 3 b, and 4 a short, not reaching bases of subsequent posterior setae.... P. similis Mahunka, 1975. Balkan Peninsula

- Setae 3 a, 3 b, and 4 a long, reaching bases of subsequent posterior setae............. P. altaicus Mahunka, 1969. Mongolia

27. Hysterosomal tergites without longitudinal wrinkles........................................................ 28

- Hysterosomal tergites with distinct longitudinal wrinkles................. P. rugosus Mahunka, 1973. Ukraine, Mongolia

28. Setae 2 a not longer than 2 b........................................................................... 29

- Setae 2 a much longer than 2 b............... P. sellnickianus (Rack, 1964). Central and Eastern Europe, Russia (Crimea)

29. Setae 2 b distinctly longer than 2 a...................................................................... 30

- Setae 2 b and 2 a subequal............................................................................. 31

30. Stigmata 1 -chambered................................................ P. portatus (Martin, 1978). Cosmopolitan

- Stigmata 2 -chambered............................................... P. muscarius (Martin, 1978). Cosmopolitan

31. Empodia on tarsi II and III distinctly thickened distally, relatively short........................................ 32

- Empodia on tarsi II and III long and narrow................................. P. meszarosi Mahunka, 1973. Mongolia

32. Setae f longer than e................................................................................. 33

- Setae f and e subequal................................................. P. morelliae Rack, 197 1 4. Cosmopolitan

33. Setae v 1 at least 2.5 times longer than v 2.................................................................. 34

- Setae v 1 no more than 1.5 times longer than v 2............................................................. 37

34. Stigmata 1 -chambered............................................................................... 35

- Stigmata 2 -chambered................................................. P. m a ly i Samsinak, 1989. Slovakia, Iran

35. Apodemes 5 absent.................................................................................. 36

- Apodemes 5 present.................................................. P. kneeboni (Wicht, 1970). Cosmopolitan

36. Setae ps 1 and ps 3 subequal, tibiotarsus I about 3 times longer than its width.. P. camerikae Khaustov, 2008. Russia (Crimea)

- Setae ps 1 longer than ps 3, tibiotarsus I about 1.5 times longer than its width..... P. eccoptomeralis Camerik, 2010. Belgium

37. Solenidion φ 1 situated laterally between bases of setae pl” and l”............................................. 38

- Solenidion φ 1 situated close to solenidion φ 2 or ω 1.......................................................... 41

38. Setae c 1 shorter or subequal to d........................................................................ 39

- Setae c 1 longer than d.............................................. P. confusus Khaustov, 2008. Russia (Crimea)

Notes

Published as part of Khaustov, Alexander A., 2015, Two new species of the genus Pediculaster (Acari: Pygmephoridae) from Western Siberia, Russia, pp. 413-429 in Zootaxa 3926 (3) on pages 425-426, DOI: 10.11646/zootaxa.3926.3.6, http://zenodo.org/record/245190

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References

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