Tetra

Xue, Xiao-Feng, Song, Zi-Wei & Hong, Xiao-Yue, 2006, A taxonomic study of the genus Te t r a Keifer (Acari: Eriophyidae: Phyllocoptinae: Anthocoptini) from Shaanxi Province, China with descriptions of nine new species, Zootaxa 1249, pp. 1-22 : 2-4

Key to species in the genus Tetra in China

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

­ Coxal area with short lines or granules ....................................................................... 12

2 Setae h1 absent .......................................................................... Tetra intermedia Huang

­ Setae h1 present............................................................................................................. 3

3 Empodium 7­rayed ....................................................................... Tetra yushania Huang

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

4 Coxal area with prosternal apodeme ....................................... Tetra similisforca Huang

­ Coxal area without prosternal apodeme ........................................................................ 5

5 Shield design without median line ................................................................................ 6

­ Shield design with median line ..................................................................................... 8

6 Admedian lines on prodorsal shield separate .................................. Tetra acerii sp. nov.

­ Admedian lines on prodorsal shield connected............................................................. 7

7 Admedian lines on prodorsal shield connected at basal 2/3 .............. Tetra toona Huang

­ Admedian lines on prodorsal shield connected at base ............... Tetra sorbusis sp. nov.

8 Shield design with median line separate from admedian lines ....... Tetra lucidi sp. nov.

­ Shield design with median line connected with admedian lines................................... 9

9 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....................................................................................................... 10

10 Femur Ι and ΙΙ with longitudinal lines ......................... Tetra polygoni Wei, Chen & Xie

­ Femur smooth.............................................................................................................. 11

11 Shield design with admedian lines connected at basal 1/3, admedian and submedian lines separate ........................................................... Tetra clerodendri Wei, Chen & Xie

­ Shield design with admedian lines connected at basal 1/3 and 2/3, admedian and sub­ median lines connected ............................................................... Tetra smilaxis sp. nov.

12 Coxal area with granules............................................................................................. 13

­ Coxal area with short lines .......................................................................................... 15

13 Female genital coverflap smooth, empodium 7­rayed ...................................................

..................................................................................... Tetra dalbergiae Kuang & Zhuo ­ Female genital coverflap with 10 longitudinal ridges, empodium 4­rayed................. 14

14 Prodorsal shield with lateral lobe, dorsal annuli with elliptical microtubercles. ............ ................................................................................................. Tetra ningshanis sp. nov.

­ Prodorsal shield without lateral lobe, dorsal annuli with spiny microtubercles.............. .......................................................................................... Tetra suspensae Xue & Hong

15 Dorsal annuli with microtubercles .............................................................................. 16

­ Dorsal annuli smooth .................................................................................................. 23

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

­ Empodium more than 2­rayed..................................................................................... 17

17 Dorsal annuli with elliptical microtubercles ............................................................... 18

­ Dorsal annuli with spiny or filament microtubercles .................................................. 20

18 Empodium 4­rayed, shield design obscure ................................. Tetra cuihuae sp. nov.

­ Empodium 6 to 7­rayed, shield design distinct ........................................................... 19

19 Solenidion knobbed, dorsal annuli with elliptical microtubercles on rear annular mar­ gins ................................................................................................. Tetra salixis sp. nov.

­ Solenidion tapered, dorsal annuli with elliptical microtubercles ahead of rear annular margins ............................................................................. Tetra japonicae Xue & Hong

20 Empodium 4­rayed ................................................................ Tetra pinnatifidae sp. nov.

­ Empodium 6 to 7­rayed............................................................................................... 21

21 Shield design with median line complete .......................... Tetra formosae Xue & Hong

­ Shield design with median line incomplete................................................................. 22

22 Shield design with granules on lines, median line connected with admedian lines at basal 1/3 ............................................................................... Tetra lobatae Xue & Hong

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

23 Prodorsal shield smooth ........................................................ Tetra louguantais sp. nov.

­ Prodorsal shield with design ....................................................................................... 24

24 Median line on prodorsal shield present ..................................................................... 25

­ Median line on prodorsal shield absent....................................................................... 29

25 Median, admedian and submedian lines complete and separated each other ................. .............................................................................. Tetra phyllostachyis Kuang & Zhang

­ Prodorsal shield design network ................................................................................. 26

26 Setae h1 present ............................................................... Tetra shiheziensis Wang & Lu

­ Setae h1 absent............................................................................................................ 27

27 Prodorsal shield without median line at base .................. Tetra gleditsiae Kuang & Luo

­ Prodorsal shield with median line at base ................................................................... 28

28 Female coverflap with 3 transverse lines at base and 5 to 8 longitudinal ridges, median line connected with admedian lines at basal, central and anterior .................................. ........................................................................................................ Tetra cleomis Kuang

­ Female coverflap with 8 longitudinal ridges, median line connected with admedian lines at basal .................................................................... Tetra lycopersici Xue & Hong

29 Coxal area without prosternal apodeme ..................... Tetra lushuiensis Kuang & Hong

­ Coxal area with prosternal apodeme ........................................................................... 30

30 Empodium 6­rayed, submedian lines present ....... Tetra nanjingensis Lin, Jin & Kuang

­ Empodium 4­rayed, submedian lines absent............................................................... 31

31 Admedian lines connected at base, female coverflap with 12 to 14 longitudinal ridges .......................................................................................................... Tetra populi Kuang

­ Admedian lines separate, female coverflap with 8 to 10 longitudinal ridges ................. ........................................................................................ Tetra heilongjiangensis Kuang