Phytoseiidae

Ferla, Noeli Juarez, Johann, Liana, Klock, Crisna, Majolo, Fernanda & Botton, Marcos, 2011, Phytoseiid mites (Acari: Phytoseiidae) from vineyards in Rio Grande do Sul State, Brazil, Zootaxa 2976, pp. 15-31 : 26-27

Key to Phytoseiidae mites found in vineyards of the State of Rio Grande do Sul, Brazil

1. Podonotal region of dorsal shield with four pairs of "lateral" setae: j3, z2, z4 and s4 .................... Amblyseiinae ...2

- Podonotal region of dorsal shield with six pairs of "lateral" setae: j3, z2, z3, z4, s4 and s6 present...... Typhlodrominae ...21

2. Setae j6 2–3 times longer than distance between their bases; ventrianal shield with one pair of pre-anal setae................................................................................................ Phytoseiulus macropilis

- Setae j6 less than twice as long as distance between their bases; ventrianal shield with one, two or three pairs of pre-anal setae.................................................................................................... 3

3. Ratio of setae s4: Z1 <3.0:1.0; female ventrianal shield vase-shaped; setae s4, Z4 and Z5 not greatly longer than other dorsolateral setae............................................................................................. 4

- Ratio of setae s4: Z1> 3.0:1.0; female ventrianal shield pentagonal or vase-shaped; setae s4, Z4 and Z5 distinctly longer than other setae..........................................................................................13

4. Legs I, II and III usually without macrosetae; macrosetae present only on leg IV.................................... 5

- Legs I, II and III usually with macrosetae................................................................... 9

5. Spermatheca with atrium forked for at least half its length at junction with major duct, atrium appearing thick-walled......................................................................................... Neoseiulus transversus

- Spermatheca with atrium not deeply forked at junction with neither major duct, not appearing thick-walled.............. 6

6. Dorsal setae strongly barbed................................................................ Neoseiulus tunus

- Dorsal setae not strongly barbed (except Z4 and Z5).......................................................... 7

7. Most of the dorsal shield not reaching the basis of the next row............................... Neoseiulus californicus

- Most dorsal shields setae long (around 40–60µm) often reaching the base of the next row............................ 8

8. Setae s4, Z4 and Z5 length 50, 65, 78 respectively; macrosetae present only on tarsus IV............. Neoseiulus anonymus

- Setae s4, Z4 and Z5 length 28, 46, 64 respectively; macrosetae present only on genu, tibia and tarsus IV.... Neoseiulus fallacis

9. Setae JV1 inserted well behind anterior margin of shield; peritreme short, extending forward beyond base of setae z2 (except Euseius inouei )...................................................................................... 10

- Setae JV1 inserted on or near margin of ventrianal shield; peritreme extending as far as base of setae j1 ................12

10. Dorsal shield mostly smooth with few striae at anterolateral region...................................... Euseius ho

- Dorsal shield reticulated............................................................................... 11

11. Setae r3 and R1 on dorsal shield; peritreme extending as far as the region between z2 and z4 ............. .. Euseius sibelius

- Setae r3 and R1 outside dorsal shield; peritreme extending as far as the region between j1 and j3....... Euseius inouei

12. Dorsal shield with most setae serrated; setae j1, j3, z2, z4, Z1, Z4, Z5, s4, S2 and r3 considerably thickened............................................................................................. Typhlodromalus marmoreus

- Dorsal shield with most setae smooth and tapered........................................... Typhlodromalus aripo

13. Setae J2 absent.................................................................. Proprioseiopsis cannaensis

- Setae J2 present...................................................................................... 14

14. With an ectal strip on the peritrematal shield, extending along the exopodal shield and around it to the posterior end of coxa IV................................................................................................... 19

- Without ectal strip adjacent to peritrematal shield........................................................... 15

15. Ratio of seta s4: S2 <2.7: 1.0................................................................ Transeius lisei

- Ratio of seta s4: S2> 3.0: 1.0.......................................................................... 16

16. Ventrianal shield vase-shaped, with distinct constriction behind seta JV3......................... Amblyseius herbicolus

- Ventrianal shield never vase-shaped...................................................................... 17

17. Setae Z4 and Z5 length 120 and 197 respectively......................................... Amblyseius neochiapensis

- Setae Z4 and Z5 length 138–214 and 305–442 respectively.................................................... 18

18. Spermatheca cervix saccular-fundibular, atrium bifid....................................... Amblyseius operculatus

- Spermatheca cervix with bell-shaped, atrium nodular............................................. Amblyseius vitis

19. Without macrosetae on leg I, II and III; setae JV2 and ZV2 inserted in the normal position on the female ventrianal shield......................................................................................... Arrenoseius gaucho

- With macrosetae on leg I, II and III; setae JV2 and ZV2 inserted on anterior one-third of the pre-anal area of the female ventri- anal shield.......................................................................................... 20

20. With a pair of metapodal plates on each side, movable digit of chelicera with three teeth............ Iphiseiodes saopaulus

- With a single metapodal plate on each side, movable digit of chelicera with two teeth............. Iphiseiodes metapodalis

21. Setae S4 and JV4 present............................................................................... 22

- Setae S4 and JV4 absent............................................................................... 23

22. Setae on dorsal shield short, smooth, not knobbed........................................... Typhlodromus ornatus

- Setae on dorsal shield long strongly serrated and knobbed.............................. Typhlodromus transvaalensis

23. Seta R1 absent; S2 present............................................................. Galendromus annectens

- Seta R1 present; S2 absent..............................................................................24

24. Setae along margins of dorsal shield long, seta R1 much shorter than s6; setae S5 and Z5 approximately equal in length; inser- tions of JV1, JV3 and ZV2 aligned in nearly vertical rows on ventrianal shield; legs without macrosetae..................................................................................................... Typhlodromina tropica

- Setae along margins of dorsal shield medium in length; R1 and s6 setae subequal in length, setae S5 usually much shorter than Z5; insertions of JV1, JV3 and ZV2 forming a triangle on ventrianal shield, leg IV with 0 to 3 macrosetae............... 25

25. Seta R1 inserted on dorsal shield........................................................ Metaseiulus mexicanus

- Seta R1 inserted on lateral integument.................................................................... 26

26. Chaetotactic formula of genu II: 2, 2/1, 2/0, 1................................................ Metaseiulus cornus

- Chaetotactic formula of genu II: 2, 2/0, 2/0, 1.............................................. Metaseiulus camelliae