Olopachys

Mašán, Peter, 2007, Olopachys (Olopachylaella) gronychi subgen. nov., sp. nov., a new species of mite from Bulgaria (Acari: Mesostigmata: Pachylaelapidae), Zootaxa 1509, pp. 31-39 : 36

Key to the known males of the genus Olopachys

1. Opisthonotal setae J5 not reduced, long and needle-like (as in Fig. 1 ); cheliceral spermatodactyl relatively short and widened medially, leaf-like and obtusely pointed ( Fig. 3 ); base of axillar seta pv1 and finger-like apophyse with separate position on femur II ( Fig. 7 )................................................................................. 2

- Opisthonotal setae J5 reduced, only vestigial microsetae present; cheliceral spermatodactyl relatively long and slim, without medial widening (with approximately parallel lateral margins), stiletto-like to blade-like and sharply tapered distally ( Fig. 14 ); axillar seta pv1 of femur II with insertion on distinctive outgrowth, the outgrowth and finger-like apophyse with position on a common base ( Fig. 13 ) .................................. 3

2. Two spur-like distal setae pl1 and pl2 on tarsus II present ( Fig. 7 ); spermatodactyl obtusely pointed apically and shorter (less than 1.5 times as long as movable digit, Fig. 3 ); seta associated with petal-like palptibial outgrowth well developed and subequal in length to the outgrowth ( Fig. 6 ); length of dorsal shield 635–675 µm ........................................................................................................ O . gronychi sp. nov.

- One spur-like distal seta pl1 on tarsus II present (as in Fig. 13 ); spermatodactyl truncate apically and longer (more than 1.5 times as long as movable digit); seta associated with petal-like palptibial outgrowth conspicuously shortened and with tip not reaching the middle of the outgrowth; length of dorsal shield 750 µm .............................................................................................................. O . crassipes Koroleva, 1976

3. Posterolateral margin of dorsal shield with 1 hypertrophied slot-like pore close to seta S4 (gdS4); palptibia with 3 smaller protuberances; length of dorsal shield 440–510 µm ............. O . vysotskajae Koroleva, 1976

- Posterolateral margin of dorsal shield with 2 adjacent hypertrophied pores between setae S4 and Z2 (gdZ1, gdS4); palptibia with 1 larger protuberance; length of dorsal shield 560–610 µm ........................... ............................................................................................................................... O . sklari Koroleva, 1976

Figures

FIGURES 1 – 2. Olopachys gronychi sp. nov. Female. 1. Dorsal idiosoma; 2. ventral idiosoma.

FIGURES 3 – 9. Olopachys gronychi sp. nov. 3. Male, chelicera, lateral view; 4. Female, sperm access system; 5. Female, chelicera, lateral view; 6. Male, palptibial outgrowths, palp cross-section; 7. Male, leg II, lateral view, with ventral detail of femoral apophysis; 8. Female, epistome; 9. Female, tarsus II, lateral view.

FIGURES 10 – 15. Olopachys (Olopachys) spp., general appearance. 10. Male, palptibial outgrowths, palp cross-sections; 11. Female, sperm access system of O. vysotskajae; 12. Female, chelicerae, lateral views; 13. Male, leg II, lateral view; 14. Male, chelicerae, lateral views; 15. Female, epistome. Figures not to scale.