Tetra

Xue, Xiao-Feng & Hong, Xiao-Yue, 2005, Five new species of the genus Te t r a Keifer (Acari: Eriophyoidea) from China, Zootaxa 1067, pp. 37-48 : 38

Key to the species of Tetra from China

1 Coxal area smooth......................................................................................................... 2

­ Coxal area with short lines or granules ......................................................................... 8

2 Empodium 7­rayed....................................................................... Tetra yushania Huang

­ Empodium 4­rayed........................................................................................................ 3

3 Setae h1 absent.......................................................................... Tetra intermedia Huang

­ Setae h1 present............................................................................................................. 4

4 Coxal sternal line absent......................................................... Tetra similisforca Huang

­ Coxal sternal line present .............................................................................................. 5

5 Shield design without median line.................................................... Tetra toona Huang

­ Shield design with median line ..................................................................................... 6

6 Shield design with median line 1/3 anterior, female genital coverflap with 8 to 10 lon­ gitudinal ridges........................................................ Tetra guiyangensis Kuang & Hong

­ Shield design with median line 1/3 at base, female genital coverflap with more than 10 longitudinal ridges......................................................................................................... 7

7 Femur with two longitudinal lines, female genital coverflap with 12 to 14 longitudinal ridges, shield design network...................................... Tetra polygoni Wei, Chen & Xie

­ Femur smooth, female genital coverflap with 10 to 12 longitudinal ridges, shield design only with median and admedian lines connected at basal 1/3 .............................................................................................................. Tetra clerodendri Wei, Chen & Xie

8 Coxal area with granules............................................................................................... 9

­ Coxal area with short lines .......................................................................................... 10

9 Female genital coverflap smooth, empodium 7­rayed, dorsal annuli with round micro­ tubercles ...................................................................... Tetra dalbergiae Kuang & Zhuo

­ Female genital coverflap with 10 longitudinal ridges, empodium 4­rayed, dorsal annuli with spiny microtubercles .............................................. Tetra suspensae n. sp.

10 Dorsal annuli with microtubercles .............................................................................. 11

­ Darsal annuli smooth................................................................................................... 15

11 Empodium 2­rayed...................................................................... Tetra concava (Keifer)

­ Empodium 6 or 7­rayed............................................................................................... 12

12 Dorsal annuli with elliptical microtubercles ................................ Tetra japonicae n. sp.

­ Dorsal annuli with spiny microtubercles..................................................................... 13

13 Shield design with median line complete.................................... Tetra formosae n. sp.

­ Shield design with median line incomplete................................................................. 14

14 Shield design with granules on lines, median line connected with admedian lines at basal 1/3 .......................................................................................... Tetra lobatae n. sp.

­ Shield design without granules on lines, median and admedian lines separate .............. ....................................................................................... Tetra superbae Huang & Wang

15 Median line on prodorsal shield present ..................................................................... 16

­ Median line on prodorsal shield absent ...................................................................... 19