Phytoseiidae

Ma, Min, Fan, Qing-Hai & Zhang, Zhi-Qiang, 2019, Phytoseiid mites (Acari: Phytoseiidae) of the Cook Islands, Zootaxa 4646 (3), pp. 527-540 : 538

Key to species of Phytoseiidae in the Cook Islands

1. Setae z3 and s6 absent................................................................... Amblyseiinae … 3

- Either or both z3 and s6 present......................................................................... 2

2. Setae Z1, S2, S4 and S5 absent................................................. Phytoseiinae ... Phytoseius ... 10

- At least one of setae Z1, S2, S4 or S5 present.............................................. Typhlodrominae ... 11

3. Sternal shield with median posterior projection; some forward migration of pre-anal setae JV2 and ZV2; Z4 short or minute, s4 and Z5 rarely but sometimes much longer than other setae; JV4 present................................. Euseius ... 4

- Sternal shield with/without posterior projection; without forward migration of pre-anal setae JV2 and ZV2; JV4 absent..... 5

4. Seta Z5 barbed; macrosetae on leg IV with flared tips, calyx of spermathecal apparatus short tubular, entering jug-like vesicle, atrium not kidney-shaped...................................................................... E. noumeae

- Seta Z5 smooth; macrosetae on leg IV not flared; calyx of spermathecal apparatus tubular with flared terminus.... E. ovalis

5. Sternal shield without posterior projection; seta S4 absent, ventrianal shield reduced not long, narrow, with 0–1 pair of pre-anal setae........................................................................ Phytoseiulus ... P. macropilis

- Sternal shield with posterior projection; seta S4 present, ventrianal shield not reduced, usually with three pairs of pre-anal setae................................................................................................ 6

6. Setae Z5 large, terminally knobbed; setae s4, Z4 and usually Z5 not greatly longer than other dorsal setae; ratio seta s4: Z1 <3.0:1.0; setae JV4 absent....................................................... Knopkirie ... K. flascus sp. nov.

- Setae Z5 without terminal knobs; s4, Z4 and Z5 usually greatly elongated, whip-like; ratio seta s4: Z1> 3.0:1.0; setae JV4 present.................................................................................... Amblyseius ... 7

7. Ventrianal shield pentagonal, atrium diffuse, as wide as both calyx and major duct...................... A. tamatavensis

- Ventrianal shield vase-shaped, atrium not diffuse, without as wide as both cervix and major duct...................... 8

8. Calyx narrow and parallel sides along the entire length.............................................. A. largoensis

- Calyx flaring terminally................................................................................ 9

9. Calyx long, gradually flaring terminally......................................................... A. herbicolus

- Calyx short, flaring abruptly and expanded terminally................................................. A. fijiensis

10. Calyx of spermathecal apparatus cup-shaped; setae z2 and z4 smooth.................................. P. woodburyi

- Calyx of spermathecal apparatus short and flaring, Y-shaped; setae z2 and z4 serrated........................ P. coheni

11. Setae z6 absent............................................................... Typhlodromus ... T. haramotoi

- Setae z6 present........................................................... Kuzinellus ... K. rarotonga sp. nov.