Hoplocheylus

Khaustov, Alexander A., 2015, To systematics of the mite genus Hoplocheylus (Acariformes: Tarsocheylidae), Zootaxa 3957 (3), pp. 277-299 : 294

Key to species of the genus Hoplocheylus

(incomplete described H. aethiopicus ( Cooreman, 1951) is not included)

1. Tarsus I with 2 solenidia, genua II–IV with 4-4-5 setae, respectively............................................ 2

- Tarsus I with 1 solenidion, genua II–IV with 3-3-2 setae, respectively......................................................................................... H. arnoldii Livshits and Mitrofanov, 1973 . Russia (Crimean peninsula)

2. Solenidion on tibia IV present........................................................................... 3

- Solenidion on tibia IV absent........................................................................... 6

3. Hysterosoma with 1 midsternal plate between coxal fields II and III............................................ 4

- Hysterosoma with 3 midsternal plates between coxal fields II and III... H. johnstoni Atyeo and Baker, 1964 . North America

4. Setae f distinctly longer than e ........................................................................... 5

- Setae e and f subequal....................................... P. longispinus Atyeo and Baker, 1964. North America

5. Setae f very long, more than 2 times longer than e and reaching beyond posterior margin of body, solenidion on tarsus II very long, reaching tips of claws........................... H. atomarius ( Berlese, 1913) . Southern Europe, North America

- Setae f much shorter, about 1.5 times longer than e and not reaching posterior margin of body, solenidion on tarsus II reaching only tip of tarsus....................................... H. americanus Delfinado and Baker, 1974 . North America

6. Solenidion ω 1 distinctly longer than ω 2.................................................................... 7

- Solenidion ω 1 distinctly shorter than ω 2....................................................................................................... H. sogdianicus Barilo and Sharipov, 1987 . Middle Asia ( Uzbekistan, Turkmenistan)

7. Setae 4 a and ag 1 situated on plates....................................................................... 8

- Setae 4 a and ag 1 situated on soft striated cuticle.... H. fereshtae Amin, Khanjani and Ueckermann, 2014 . Middle Asia ( Iran)

8. Solenidion ω 1 not reaching beyond tip of tarsus, tarsus I with 13 setae … H. pickardi Smiley and Moser 1968 . North America

- Solenidion ω 1 distinctly reaching beyond tip of tarsus, tarsus I with 14 setae.............................................................................................. H. magnificus Khaustov sp. nov. Western Siberia ( Russia)