Aculus

Song, Zi-Wei, Xue, Xiao-Feng & Hong, Xiao-Yue, 2009, Six new species of Aculus Keifer from Tibet Autonomous Region, China (Acari: Eriophyoidea: Eriophyidae: Phyllocoptinae), Zootaxa 2305, pp. 1-23 : 1-4

Key to Aculus species in China

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

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

2 Dorsal annuli smooth .................................................................................................................................................... 3

- Dorsal annuli with microtubercles.............................................................................................................................. 10

3 Ventral annuli smooth ........................................................................................... Aculus shaoxingensis Kuang, 1998b

- Ventral annuli with microtubercles ...............................................................................................................................4

4 Setae h1 absent, tarsal empodium 5-rayed ........................................................ Aculus ablopurpurascus Huang, 2001a

- Setae h1 present, tarsal empodium 4-rayed .................................................................................................................. 5

5 Prodorsal shield smooth ..................................................................................... Aculus huangzhongensis Kuang, 2000

- Prodorsal shield design with lines ................................................................................................................................ 6

6 Setae f on 6th ventral annulus from rear ....................................................................................................................... 7

- Setae f on 5th ventral annulus from rear ....................................................................................................................... 8

7 Prodorsal shield sub-pentagonal, median, admedian and submedian lines complete, median and admedian lines con- nected near base; female genital coverflap with 8 longitudinal ridges and 3 transverse lines in two ranks at base....... .............................................................................................................. Aculus toxicodendri Xue, Song & Hong, 2008

- Prodorsal shield design with incomplete median line and complete admedian lines, submedian line absent, admedian lines connected at posterior; female genital coverflap with 10-12 longitudinal ridges. Aculus cayratiae Kuang, 1987

8 Prodorsal shield with granules on anterior margin .......................................... Aculus asteri Xue, Song & Hong, 2008

- Prodorsal shield without granules................................................................................................................................. 9

9 Prodorsal shield subtriangular, design with median line incomplete, admedian and submedian lines complete; frontal lobe without spine .................................................................................. Aculus ligustri ( Keifer, 1938) in Kuang, 1995

- Prodorsal shield design with median line absent, incomplete admedian and submedian lines; frontal lobe with two spines ............................................................................................................... Aculus mansoni Amrine & Stasny, 1994

10 Setae f on 8th ventral annulus from rear; tarsal solenidion knobbed; coxal plates I separated ...................................... ..................................................................................................................... Aculus mononis Song, Xue & Hong, 2008

- Setae f on 6th ventral annulus from rear; tarsal solenidion tapered; coxal plates I not separated. ............................. 11

11 Ventral annuli with round microtubercles; tarsal empodium 5-rayed; female genital coverflap with 7-8 longitudinal ridges, 4 discontinuous lines at base; frontal lobe with two spines. ........... Aculus sargentodoxae Wei & Kuang, 1997

- Ventral annuli with tapered microtubercles; tarsal empodium 6-rayed; female genital coverflap with 2 ranks ridges; frontal lobe without spine ............................................................................... Aculus longanensis Wei & Kuang, 1997

12 Dorsal annuli smooth .................................................................................................................................................. 13

- Dorsal annuli with microtubercles.............................................................................................................................. 21

13 Female genital coverflap smooth .............................................. Aculus gladitsiae Kuang & Luo in Kuang et al., 2005

- Female genital coverflap with ridges.......................................................................................................................... 14

14 Female genital coverflap with 2 transverse lines at base.............................. Aculus cuihuae Xue, Song & Hong, 2008

- Female genital coverflap without transverse line at base ........................................................................................... 15

15 Tarsal empodium 7-rayed ............................................................................................. Aculus bambusae Kuang, 1991

- Tarsal empodium 4 or 5-rayed .................................................................................................................................... 16

16 Ventral annuli with tapered microtubercles .................................................................................................................... .................................................................. Aculus fockeui (Nalepa & Trouessart in Trouessart, 1891) in Kuang, 1995

- Ventral annuli with round microtubercles...................................................................................................................17

17 Coxal plates with granules.......................................................................................................................................... 18

- Coxal plates with short lines....................................................................................................................................... 19

18 Prodorsal shield with granules at lateral, frontal lobe without spine; paraxial tibial seta (l') located 1/4 from dorsal base; setae f on 6th ventral annulus from rear ............................................... Aculus rumexis Xue, Song & Hong, 2008

- Prodorsal shield without granules, frontal lobe with two spines; paraxial tibial seta (l') located 1/3 from dorsal base; setae f on 5th ventral annulus from rear .................................................................. Aculus melia Kuang & Zhuo, 1989

19 Prodorsal shield design with median line absent; setae f on 4th ventral annulus from rear ........................................... ................................................................................................. Aculus guilinensis Kuang & Luo in Kuang et al., 2005

- Prodorsal shield design with median line present; setae f on 5th ventral annulus from rear...................................... 20

20 Prodorsal shield design with median and admedian lines incomplete, submedian line absent; frontal lobe with two spines; tarsal empodium 4-rayed, tarsal solenidion rod-like ......................................... Aculus pistaciae Kuang, 1998a

- Prodorsal shield design with all lines complete; frontal lobe without spine; tarsal empodium 5-rayed, tarsal solenid- ion tapered .............................................................................................. Aculus broussonetiae Lin, Jin & Kuang, 1997

21 Female genital coverflap smooth ................................................................................................................................ 22

- Female genital coverflap with longitudinal ridges .....................................................................................................23

22 Prodorsal shield with only thick admedian lines, a transverse line connected with admedian lines forming H shape, granules on center and lateral ................................................................................................. Aculus sorbariae sp. nov.

- Prodorsal shield with all lines complete, median and admedian lines connected with a transverse line at 1/4 from posterior ................................................................................................................. Aculus persicae Xue & Hong, 2005

23 Setae h1 absent........................................................................................... Aculus macrocarpae Huang & Wang, 2004

- Setae h1 present .......................................................................................................................................................... 24

24 Prodorsal shield design with median line absent ........................................................................................................ 25

- Prodorsal shield design with median line present....................................................................................................... 29

25 Dorsal annuli with spiny microtubercles; tarsal empodium 7-rayed. ........................ Aculus daibuensis Huang, 2001b

- Dorsal annuli with elliptical or elongated microtubercles; tarsal empodium 4 to 6-rayed......................................... 26

26 Tarsal empodium 6-rayed; female genital coverflap with 12 longitudinal ridges and 2 transverse lines at base........... ..................................................................................................................... Aculus amurens Xue, Song & Hong, 2008

- Tarsal empodium 4 or 5-rayed; female genital coverflap without transverse line at base.......................................... 27

27 Coxal plates with only granules; tarsal empodium 5-rayed, tarsal solenidion rod-like.................................................. .................................................................................................................................. Aculus populi Xue & Hong, 2005

- Coxal plates with short lines; tarsal empodium 4-rayed, tarsal solenidion knobbed.................................................. 28

28 Coxal plates with only short lines; setae f on 5th ventral annulus from rear; female genital coverflap with 8 longitu- dinal ridges and granules at base; dorsal annuli with elliptical microtubercles all over the dorsal opisthosoma........... ..................................................................................................................... Aculus jingbois Xue, Song & Hong, 2008

- Coxal plates with short lines and granules; setae f on 6th ventral annulus from rear; female genital coverflap with 12–14 longitudinal ridges; dorsal annuli with elliptical microtubercles except 7 to 8 annuli from rear smooth ........... ......................................................................................................................................... Aculus tibetsalicinus sp. nov.

29 Prodorsal shield with granules on the shield. ............................................................................................................. 30

- Prodorsal shield without granules............................................................................................................................... 35

30 Tarsal empodium 8-rayed .............................................................................................. Aculus cheilophilanus sp. nov.

- Tarsal empodium 4 or 5-rayed .................................................................................................................................... 31

31 Tarsal empodium 5-rayed; dorsal annuli with filament microtubercles; female genital coverflap with 10 longitudinal ridges and 3 transverse lines at base .......................................................... Aculus eupteleae Xue, Song & Hong, 2008

- Tarsal empodium 4-rayed; dorsal annuli with elongated or tapered microtubercles; female genital coverflap without transverse line at base ................................................................................................................................................. 32

32 Dorsal annuli with tapered microtubercles; setae f on 6th ventral annulus from rear .................................................... ....................................................................................................... Aculus niphocladae ( Keifer, 1966) in Kuang, 1995

- Dorsal annuli with elongated microtubercles; setae f on 5th ventral annulus from rear ............................................33

33 Prodorsal shield design with all lines present and complete; coxal plates with granules only, paraxial tibial seta (l') located 1/4 from dorsal base ........................................................... Aculus tetanothrix ( Nalepa, 1889) in Kuang, 1995

- Prodorsal shield design with median and submedian lines incomplete; coxal plates with short lines; paraxial tibial seta (l') located 1/3 from dorsal base. ......................................................................................................................... 34

34 Coxal plates with short lines only; prodorsal shield design with all lines incomplete and thick, submedian lines con- nected with a transverse line at 1/3 from anterior forming “n” shape ....................................... Aculus jasmini sp. nov.

- Coxal plates with short lines and granules; prodorsal shield design with median and submedian lines incomplete, admedian lines complete, laterally sparsely granulate .............. Aculus schlechtendali ( Nalepa, 1890) in Kuang, 1995

35 Dorsal annuli with microtubercles laterally, others smooth ................................... Aculus shanghaiensis Kuang, 1997

- Dorsal annuli with microtubercles uniform................................................................................................................ 36

36 Coxal plates with only short lines or granules............................................................................................................ 37

- Coxal plates with both short lines and granules ........................................................... Aculus lhasasorbariae sp. nov.

37 Coxal plates with short lines only............................................................................................................................... 38

- Coxal plates with granules only.................................................................................................................................. 43

38 Dorsal annuli with spiny microtubercles ........................................................... Aculus coggygriae Xue & Hong, 2005

- Dorsal annuli with elliptical or filament microtubercles ............................................................................................ 39

39 Tarsal empodium 7-rayed; dorsal annuli with filament microtubercles ................................... Aculus vignaus sp. nov.

- Tarsal empodium 4 or 6-rayed; dorsal annuli with elliptical microtubercles ............................................................. 40

40 Ventral annuli with tapered microtubercles; setae f on 5th ventral annulus from rear.................................................... .................................................................................................................... Aculus leonuri Kuang, Luo & Wang, 2005

- Ventral annuli with spiny or round microtubercles; setae f on 6th ventral annulus from rear....................................41

41 Tarsal empodium 6-rayed, tarsal solenidion tapered; female genital coverflap with 8 longitudinal ridges ................... .................................................................................................................. Aculus changbais Xue, Song & Hong, 2008

- Tarsal empodium 4-rayed, tarsal solenidion rod-like; female genital coverflap with 10 to 12 longitudinal ridges ... 42

42 Prodorsal shield design with median line complete, frontal lobe with four spines; ventral annuli with round microtu- bercles ...................................................................................................................... Aculus salicis Kuang & Luo, 1997

- Prodorsal shield design with median lines 1/3 at base, frontal lobe without spine; ventral annuli with spiny microtu- bercles ................................................................................................................. Aculus altissimae Xue & Hong, 2005

43 Paraxial tibial seta (l') located 1/4 from dorsal base, tarsal solenidion tapered; dorsal annuli with round microtuber- cles; setae f on 6th ventral annulus from rear ...................................................... Aculus huixiansis Xue & Hong, 2005

- Paraxial tibial seta (l') located 1/3 from dorsal base, tarsal solenidion knobbed; dorsal annuli with elliptical microtu-

bercles; setae f on 5th ventral annulus from rear ........................................................................................................ 44 44 Prodorsal shield design with incomplete median line connected with admedian lines by two diagonal lines at 1/4 from rear, admedian and submedian lines connected with together by a arc line at about 1/4 from anterior ................ .............................................................................................................................. Aculus amygdali Xue & Hong, 2005

- Prodorsal shield design with median line 2/3 of the shield, median and admedian lines separated, admedian and submedian lines also separated and subparallel .................................................... Aculus parafockeui Liu & Kuang, 1998