Olopachys
Creators: name: Mašán, Peter
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Pachylaelapidae
Olopachys

description: 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
description: Published as part of Mašán, Peter, 2007, Olopachys (Olopachylaella) gronychi subgen. nov., sp. nov., a new species of mite from Bulgaria (Acari: Mesostigmata: Pachylaelapidae), pp. 31-39 in Zootaxa 1509 on pages 35-36, DOI: 10.5281/zenodo.177207