Phytoseiidae

Oliveira, Daniel C., Charanasri, Vatana, Kongchuensin, Manita, Konvipasruang, Ploychompoo, Chandrapatya, Angsumarn & De, Gilberto J., 2012, Phytoseiidae of Thailand (Acari: Mesostigmata), with a key for their identification, Zootaxa 3453, pp. 1-24 : 19-20

Key to the Phytoseiidae known from Thailand, based on adult females

1. Podonotal region of dorsal shield with 5 or 6 pairs of “lateral” setae (z3 present or absent, s6 present)................. 2

- Podonotal region of dorsal shield with 4 pairs of “lateral” setae (z3 and s6 absent)............... Amblyseiinae Muma 10

2. Setae S2, S4 and S5 present........ Typhlodrominae Wainstein........... Typhlodromus (Anthoseius) ............ 3

- Setae S2, S4 and S5 absent........................... Phytoseiinae Berlese.................................. 4

3. Dorsal shield reticulate only along lateral margins; seta Z4 almost as long as distance between its base and the base of Z5; StIV about as long as SgeIV............................. Typhlodromus (Anthoseius) thailandicus Ehara & Bhandhufalck

- Dorsal shield entirely reticulate; seta Z4 about 0.4 as long as distance between its base and the base of Z5; StIV about twice as long as SgeIV.................................................... Typhlodromus (Anthoseius) serrulatus Ehara

4. Podonotal region of dorsal shield with 5 pairs of “lateral” setae (z3 absent) ... Platyseiella longicervicalis (Moraes & Denmark)

- Podonotal region of dorsal shield with 6 pairs of “lateral” setae, including z3 ........... Phytoseius Ribaga. ........... 5

5. Seta R1 present...................................................................................... 6

- Seta R1 absent........................................................................................ 7

6. Seta J2 absent; seta Z4 shorter than Z5; seta j3 slightly longer the distance between its base and the base of j4; setae s4 and s6 subequal in length; leg IV with macrosetae with rounded apices.......................... Phytoseius subtilis Wu & Li

- Seta J2 present; seta Z4 longer than Z5; seta j3 about as long as distance between its base and the base of j5; seta s4 longer than s6; leg IV macrosetae notched at apices............................... Phytoseius hongkongensis Swirski & Shechter

7. Macroseta of genu IV much shorter than macrosetae of basitarsus and telotarsus of same segment.......................................................................................... Phytoseius brevicrinis Swirski & Shechter

- Macroseta of genu IV subequal or slightly shorter than macrosetae of basitarsus and telotarsus of same segment.......... 8

8. Seta j3 shorter than half the distance between its base and the base of z4; calyx of spermatheca funnel-shaped................................................................................... Phytoseius coheni Swirski & Shechter

- Seta j3 about as long as distance between its base and the base of z4; calyx of spermatheca saccular or cup-shaped........ 9

9. Calyx of spermatheca saccular........................................ Phytoseius neoferox Ehara & Bhandhufalck

- Calyx of spermatheca cup-shaped................................. Phytoseius fotheringhamiae Denmark & Schicha

10. Peritremal shield not fused anteriorly with dorsal shield....... Indoseiulini Ehara & Amano....... Gynaeseius Wainstein

- Peritremal shield fused anteriorly with dorsal shield......................................................... 11

11. Sternal shield with median posterior projection (often lightly sclerotized and difficult to see); with some forward “migration” of preanal setae JV2 and ZV2; cheliceral digits with internal margin concave, with a group of few teeth clustered at distal end of fixed digit............. Euseiini Chant & McMurtry............ Euseius Wainstein. ...................... 12

- Sternal shield without median posterior projection (except for Amblyseius eharai Amitai & Swirskii ); without forward “migra- tion” of preanal setae JV2 and ZV2; cheliceral digits with internal margin straight, with teeth evenly distributed along fixed digit............................................................................................... 15

12. Dorsal shield mostly smooth, with striations along the anterolateral margins...... Euseius aizawai (Ehara & Bhandhufalck)

- Dorsal shield entirely reticulate......................................................................... 13

13. Spermathecal calyx relatively long, slender; macrosetae of leg IV knobbed........ Euseius neofustis Moraes & McMurtry

- Spermathecal calyx short, slightly inflate near atrium; macrosetae of leg IV with sharp tips.......................... 14

14. Dorsal shield jagged near R1; seta j3 almost as long as the distance between its base and base of j4 ........................................................................................ Euseius okumae (Ehara & Bhandhufalck)

- Dorsal shield smoothly concave near R1; seta j3 about half as long as distance between its base and base of j4 ........................................................................................ Euseius nicholsi (Ehara & Lee)

15. Seta S4 absent....................................................................................... 16

- Seta S4 present..................................................................................... 17

16. Setae S2 present and S5 absent................................................... Amblyseiulella amanoi Ehara

- Setae S2 absent and S5 present..................................... Paraphytoseius cracentis (Corpuz & Rimando)

17. Seta s4 over 4.0 times as long as Z1; setae s4, Z4, Z5 and eventually j1 and j3 markedly longer than other dorsal setae; seta J2 present/absent................................. Amblyseiini Muma..................................... 18

- Seta s4 less than twice as long as Z1; setae s4, Z4 and Z5 not greatly longer than other dorsal shield setae; seta J2 present ... 28

18. Seta J2 present............subtribe Amblyseiina Chant & McMurtry............. Amblyseius Berlese. ........ 19

- Seta J2 absent....................................................................................... 25

19. Ventrianal shield vase-shaped, with lateral margins constricted near level of preanal pores........................... 20

- Ventrianal shield pentagonal, not constricted near level of preanal pores......................................... 22

20. Posterior margin of the sternal shield with median projection...................... Amblyseius eharai Amitai & Swirski

- Posterior margin of the sternal shield straight............................................................... 21

21. Spermathecal calyx tubular, of uniform diameter................................... Amblyseius largoensis (Muma)

- Spermathecal calyx widening towards vesicle....................................... Amblyseius herbicolus (Chant)

22. Macroseta of basitarsus IV longer than macroseta of genu IV; dorsal shield striated anterolaterally........................................................................................ Amblyseius hidakai Ehara & Bhandhufalck

- Macroseta of basitarsus IV shorter than macroseta of genu IV; dorsal shield entirely smooth......................... 23

23. Spermathecal calyx 5-8 µm long; longitudinal axis of spermathecal calyx forming about 90 degree angle with the longitudinal axis of base of major duct..................................................... Amblyseius paraaerialis Muma

- Spermathecal calyx 10-16 µm long; longitudinal axis of spermathecal calyx forming wide obtuse angle with the longitudinal axis of base of major duct.............................................................................. 24

24. Macroseta of tibia IV longer than or as long as macroseta of basitarsus IV............ Amblyseius tamatavensis Blommers

- Macroseta of tibia IV shorter than macroseta of basitarsus IV................... Amblyseius cinctus Corpuz & Rimando

25. Seta j5 present ... subtribe Proprioseiopsina Chant & McMurtry............... Proprioseiopsis Muma. ............26

- Seta j5 absent ... subtribe Arrenoseiina Chant & McMurtry............... Phytoscutus Muma. .................. 27

26. Spermathecal calyx longer than its diameter; seta j3 about 2.3 times as long as j1 ........ Proprioseiopsis ovatus ( Garman)

- Spermathecal calyx shorter than its diameter; seta j3 about 1.4 times as long as j1 ..................................................................................................... Proprioseiopsis lenis (Corpuz & Rimando)

27. Seta z2 about half as long as distance between its base and the base of z4; ventrianal shield with three pairs of preanal setae............................................................................. Phytoscutus salebrosus (Chant)

- Seta z2 about as long as distance between its base and base of z4; ventrianal shield with five pairs of preanal setae........................................................................ Phytoscutus wongsirii (Ehara & Bhandhufalck)

28. Genua of legs II and III without macrosetae; fixed cheliceral digit with fewer than six teeth........................... Neoseiulini Chant & McMurtry........................................ Neoseiulus Hughes. ................ 29

- Genua of legs II and III with macrosetae (in S. siamensis absent on genu II); fixed cheliceral digit with more than six teeth ... Typhlodromipsini Chant & McMurtry................................................................... 33

29. Dorsal shield smooth................................................................................. 30

- Dorsal shield reticulated............................................................................... 31

30. Idiosomal dorsal setae barbed (except j1, J5 and S5); “dorsocentral” setae j3-j6 longer than distance between their bases and bases of corresponding subsequent setae of the series.............................. Neoseiulus longispinosus (Evans)

- Idiosomal dorsal setae smooth (except Z4 and Z5); “dorsocentral” setae j3-j6 at most half as long as distance between their bases and bases of the corresponding subsequent setae of the series......................... Neoseiulus barkeri Hughes

31. Seta j3 longer than distance between its base and base of j4; leg IV with three macrosetae, on genu, tibia and basitarsus, respec- tively............................................................ Neoseiulus imbricatus (Corpuz & Rimando)

- Seta j3 less than half as long as distance between its base and the base of j4; leg IV with only one macroseta, on basitarsus. 32

32. Distance between ventrianal pores approximately subequal to distance between each pore and the nearest JV2 ..................................................................................... Neoseiulus baraki (Athias-Henriot)

- Distance between ventrianal pores about 2.5 times as long as distance between each pore and the nearest JV2 .......................................................................................... Neoseiulus taiwanicus (Ehara)

33. Dorsal shield reticulate, with prominent waist at level of R1 ........................... Typhlodromips syzygii (Gupta)

- Dorsal shield mostly smooth, with striae only along anterolateral margins; dorsal shield without prominent waist at level of seta R1 ......................... Scapulaseius Karg and Oomen-Kalsbeeck. ................................. 34

34. Setae R1 usually on dorsal shield (eventually one R1 off dorsal shield, as in S. asiaticus )............................ 35

- Setae R1 on interscutal membrane...................................................................... 36

35. Dorsal shield with a lobe on margin next to R1; seta Z5 about 1.5 times as long as Z4 ....... Scapulaseius asiaticus (Evans)

- Dorsal shield without marginal lobe; seta Z5 about 4.0 times as long as Z4. Scapulaseius siamensis (Ehara & Bhandhufalck)

36. Ventrianal shield vase-shaped............................................... Scapulaseius cantonensis (Schicha)

- Ventrianal shield pentagonal........................................................................... 37

37. Macroseta of genu IV knobbed and about 0.5 times as long as macroseta of tarsus IV; seta Z5 about twice as long as Z4 .............................................................................. Scapulaseius okinawanus (Ehara)

- Macrosetae of genu IV sharp-tipped and about as long as macroseta of genu IV; seta Z5 about 5.0 times as long as Z4 ..................................................................... Scapulaseius anuwati (Ehara & Bhandhufalck)