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 : 35-36

Key to the females of the genus Olopachys

1. Tarsus II with one spur-like distal seta pl1 .................................................................................................. 2

- Tarsus II with two spur-like distal setae pl1 and pl2 ( Fig. 9 ) ...................................................................... 3

2. Geniti-ventrianal shield with 3 pairs of pre-anal setae; small rounded metapodal shields present; length of dorsal shield 600–720 µm ..................................................................................... O . scutatus Berlese, 1910

- Geniti-ventrianal shield with 5 pairs of pre-anal setae; metapodal shields absent; length of dorsal shield 610 µm ............................................................................................................. O . latiscutus Koroleva, 1976

3. Opisthonotal setae J5 long and needle-like, not reduced ( Fig. 1 ); pilus dentilis of cheliceral fixed digit relatively large and curved posteriorly ( Fig. 3 ); tubes of sperm access system modified, sacculated and lobelike ( Figs 4 , 16 ) ........................................................................................................................................... 4

- Opisthonotal setae J5 modified, only vestigial microsetae present; pilus dentilis of cheliceral fixed digit minute, with normal position or directed anteriorly ( Fig. 12 ); tubular sperm access system present ( Figs 4 , 11 , 16–24 ) .................................................................................................................................................... 5

4. Geniti-ventrianal shield narrow (length 0.35–0.40, width 0.22–0.25, length/width 1.52–1.69); dorsal setae shorter (J4 length: 80–97 µm, J5 length: 24–32 µm, J4/J5: 2.5–3.8); sperm access system as in Fig. 4 ; length of dorsal shield 685–725 µm .............................................................................. O . gronychi sp. nov.

- Geniti-ventrianal shield broad (length 0.43–0.47, width 0.36–0.39, length/width 1.15–1.25); dorsal setae longer (J4 length 100–120 µm, J5 length 70–80 µm, J4/J5 1.2–1.7); sperm access system as in Fig. 16 ; length of dorsal shield 850–870 µm ................................................................. O . crassipes Koroleva, 1976

5. Posterolateral margin of dorsal shield with one hypertrophied and slot-like pore gdS4 (close to seta S4) 6

- Posterolateral margin of dorsal shield with two adjacent hypertrophied slot-like pores gdZ1 and gdS4 (between setae S4 and Z2)........................................................................................................................... 7

6. Tubes of sperm access system well developed, long and helically convoluted ( Fig. 23 ); soft cuticle of lateral and opisthogastric regions with 13 pairs of setae; length of dorsal shield 540–700 µm ........................ ............................................................................................................................. O . suecicus Sellnick, 1950

- Tubes of sperm access system strongly reduced (only very short fragments of tubes abutting the coxae IV present, Fig. 11 ); lateral and opisthogastric cuticle with 11 pairs of setae; length of dorsal shield 530–595 µm ................................................................................................................. O . vysotskajae Koroleva, 1976

7. Tubes of sperm access system greatly expanded, very long and with several bends ( Fig. 20 ); length of dorsal shield 730–840 µm ................................................................................... O . compositus Koroleva, 1976

- Tubular sperm access system normally formed, tubes short or intermediate in length, straight or slightly curved ( Figs 17–19, 21–22, 24 )................................................................................................................... 8

8. Tubes of sperm access system strongly sclerotized, thick tubes present ( Figs 18, 19, 21 ) ......................... 9

- Tubes of sperm access system weakly sclerotized, tenuous tubes present ( Figs 17, 22, 24 ) .................... 11

9. Tubes of sperm access system short ( Fig. 19 ); metapodal shields and lateral margins of geniti-ventrianal shield fused; length of dorsal shield 690 µm ................................................. O . caucasicus Koroleva, 1976

- Tubes of sperm access system longer ( Figs 18, 21 ); small and rounded separate metapodal shields present ................................................................................................................................................................... 10

10. Tubes of sperm access system uniform ( Fig. 18 ); transverse and arcuated sculptural line between sternal setae st2 and st3 present; length of dorsal shield 680–780 µm ...................... O . kacheticus Koroleva, 1976

- Tubes of sperm access system thickened distally, club-shaped ( Fig. 21 ); transverse and arcuated sculptural line in sternal region between st2 and st3 absent; length of dorsal shield 650–710 µm .............................. ....................................................................................................................... O . adsharicus Koroleva, 1976

11. Tubes of sperm access system with base associated with coxae IV ( Fig. 17 ); geniti-ventrianal shield approximately subequal in length and width (length 0.34–0.39 µm, width 0.33–0.36 µm); dorsal setae shorter (J4 90–110 µm); length of dorsal shield 650–730 µm ............................... O . annae Koroleva, 1976

- Tubes of sperm access system with base situated between coxae III and IV ( Figs 22, 24 ); geniti-ventrianal shield longer than wide (length 0.33–0.40 µm, width 0.30–0.34 µm); dorsal setae longer (J4 120 µm).. 12

12. Genu and tibia of legs III and IV with flat prominences bearing a seta; tubes of sperm access system with broadened base ( Fig. 22 ); length of dorsal shield 710–750 µm ......................... O . golubevi Reitblatt, 1958

- Genu and tibia of legs III and IV without prominences; tubes of sperm access system relatively thin in basal part ( Fig. 24 ); length of dorsal shield 620–720 µm ...................................... O . sklari Koroleva, 1976

Figures

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

FIGURES 16 – 24. Olopachys spp., Female, sperm access system. 16. O. crassipes; 17. O. annae; 18. O. kacheticus; 19. O. caucasicus; 20. O. compositus; 21. O. adsharicus; 22. O. golubevi; 23. O. suecicus; 24. O. sklari. Figures not to scale. Figs 16 – 22 and 24 modified from Koroleva (1977).

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.