Trachyuropodidae

Kontschán, Jenő, 2015, Trachyibana sarawakiensis gen. nov., sp. nov., a remarkable new genus and species from Malaysia (Acari: Uropodina: Trachyuropodidae), Zootaxa 3915 (2), pp. 272-278 : 277-278

Key to the genera of the family Trachyuropodidae (based on adults).

The key follows Hirschmann’s (1979) generic classification, except that Foliatrachys Hirschmann, 1979 is known only from the immature stages. Karg (1989) and Mašán (2001) included only two genera (Trachyuropda and Oplitis ) in this family. More recently Lindquist et al. (2009) and Beaulieu et al. (2011) separated Oplitis from the Trachyuropodidae into the family Oplitidae , and that decision is accepted here. The classification of the family Trachyuropodidae is more complex than was suggested by the European studies, and several endemic genera exist in tropical areas. The present paper therefore follows Hirschmann’s (1979) generic classification, which gives a more detailed subdivision of the family Trachyuropodidae , despite the fact that it was not used by Wiśniewski & Hirschmann (1993).

1. Opisthogastric region of ventral idiosoma with a pair of deep furrows............................................ 2

- Opisthogastric region of ventral idiosoma without deep furrows................................................. 3

2. Idiosoma subtriangular or pentagonal, anterior area of marginal shield broad................. Leonardiella Berlese, 1903

- Idiosoma oval, lemon-shaped, anterior area of marginal shield narrow.......................... Trachyibana gen. nov.

3. Dorsal shield with strongly sclerotised lines, rings and other structures........................................... 5

- Dorsal shield without sclerotised lines, rings and other structures................................................ 4

4. Dorsal shield covered by oval pits.............................................. Magnatrachys Hirschmann, 1979

- Dorsal shield covered by reticulate sculptural pattern............................. Lindquisttrachys Hirschmann, 1979

5. Dorsal shield with line-like strongly sclerotised structures..................................................... 6

- Dorsal shield with circular, semi-circular or subtriangular strongly sclerotised structures........................... 10

6. Strongly sclerotised line present, parallel with the axis of body.................................................. 7

- Strongly sclerotised line not parallel with the axis of body.................................................... 8

7. Strongly sclerotised line divided into two parts.................................... Castritrachy s Hirschmann, 1979

- Strongly sclerotised line divided into three parts.................................. Trogulotrachys Hirschmann, 1979

8. Dorsal shield with deep horizontal furrow covered by two sclerotised lines............. Bostocktrachys Hirschmann, 1979

- Deep horizontal furrow absent........................................................................... 9

9. Numerous, narrow sclerotised horizontal lines present.................................. Urotrachytes Berlese, 1903

- Numerous, narrow sclerotised horizontal lines absent.................................. Cephalojanetia Berlese, 1903

10. Dorsal shield with one pair of strongly sclerotised structures................................................. 13

- Dorsal shield with more than one pair of strongly sclerotised structures......................................... 11

11. Dorsal shield with two pairs of subtriangular strongly sclerotised structures............ Excavatatrachys Hirschmann, 1979

- Dorsal shield with more than two pairs of semicircular strongly sclerotised structures.............................. 12

12. Dorsal shield with three pairs of semicircular strongly sclerotised structures................... Urojanetia Berlese, 1903

- Dorsal shield with numerous (more than three pairs) semicircular strongly sclerotised structures................................................................................................... Cephalojanetia Willmann, 1951

13. Dorsal strongly sclerotised structure circular (eye-like)............................ Origmatrachys Hirschmann, 1979

- Dorsal strongly sclerotised structure not circular........................................................... 14

14. Dorsal strongly sclerotised structure U-shaped........................................ Trachyuropoda Berlese, 1888

- Dorsal strongly sclerotised structure C-shaped............................................................ 15

15. C-shaped dorsal strongly sclerotised structure large.............................. Arculatatrachys Hirschmann, 1979

- C-shaped dorsal strongly sclerotised structure small............................... Graecatrachys Hirschmann, 1979