Trachytes

Kontschán, Jenő & Starý, Josef, 2011, Uropodina species from Vietnam (Acari: Mesostigmata), Zootaxa 2807, pp. 1-28 : 5

Key to the Asian species of Trachytes (females)

Information from Chen et al. (2008), Hiramatsu (1979, 1980) and Ma (2001) is based on their illustrations.

1. Genital shield wide, oblong, anterolateral angles rounded...................................................... 2

- Genital shield axe-shaped, anterolateral angles pointed........................................................ 3

2. Additional sternal setae present (with seven pairs of sternal setae).... Trachytes changbaiensis Chen, Bei & Yin 2008 ( China)

- Additional sternal setae absent (with five pairs of sternal setae)................ Trachytes vietnamensis sp. nov. ( Vietnam)

3. Genital shield ornamented............................................... Trachytes yinsuigongi Ma, 2001 ( China)

- Surface of genital shield smooth.......................................................................... 4

4. St1 longer than other sternal setae............................................ Trachytes jilinensis Ma, 2001 ( China)

- St1 not longer than other sternal setae...................................................................... 5

5. Dorsal shield setae smooth............................. Trachytes agerota (C. L. Koch, 1841) (Europe and Mongolia)

- Dorsal shield setae pilose............................................................................... 6

6. St2 near anterior margin of genital shield.................................. Trachytes onishii Hiramatsu, 1980 ( Japan)

- St2 near central region of coxae II......................................................................... 7

7. Surface of dorsal shield between j-setae smooth, St4 and St5 smooth...... Trachytes hokkaidoensis Hiramatsu, 1980 ( Japan)

- Dorsal shield between j-setae with irregular pits, St4 and St5 pilose.............. Trachytes aokii Hiramatsu, 1979 ( Japan)