Olopachys ( Olopachys )

Key to world species of the subgenus Olopachys ( Olopachys) View in CoL (females)

The key to the world species of the subgenus Olopachys ( Olopachys) presented by Özbek (2016) is modified here to accommodate the new species from Iran. The specimens of Olopachys iraniensis n. sp., O. compositus Koroleva, 1976 and O caucasicus Koroleva, 1976 were examined, characteristics of other species were obtained from literature.

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

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

2. Genitiventrianal shield with three pairs of setae ( st5, JV1, JV2); metapodal sclerites small and rounded................................................... O. scutatus Berlese, 1910

— Genitiventrianal shield with five pairs of setae ( st5, JV1, JV2, ZV2, ZV3); metapodal sclerites absent..................................................... O. latiscutus Koroleva, 1976

3. Postero-lateral margins of dorsal shield with one pair of gland pores ( gdS4)............. 4

— Postero-lateral margin of dorsal shield with two pairs of gland pores ( gdS4, gdZ1)....... 2

4. Tubes of sperm access system very long, helically arranged, and longer than distance between (paraxial margins of) coxae IV................................................ 5

— Tubes of sperm access system short, not helically arranged, and shorter than distance between (paraxial margins of) coxae IV........................................................ 6

5. Tubes of sperm access system with uniform shape over their length; dorsolateral and opisthogastric soft integument with 13 pairs of setae [six pairs of r. R. ( r6, R 1, R 3, R 5−7)].................................................................. O. suecicus Sellnick, 1950

— Tubes of sperm access system with two regions of distinct thicknesses, the basal part (close to coxa IV) is thick and crescent-shaped and anterior part is slender and long; dorsolateral and opisthogastric soft integument with 14 pairs of setae [seven pairs of r. R. ( r6, R 1, R 3−7)].................................................................. O. crescentu s Özbek, 2016

6. Dorsolateral and opisthogastric soft integument with 14 pairs of setae [seven pairs of r. R. ( r6, R 1, R 3−7)]; ratio of length/width of genitiventrianal shield> 1.5 (1.54−1.69).............................................................. O. elongatus Özbek and Halliday, 2015

— Dorsolateral and opisthogastric soft integument with at most 13 pairs of setae; ratio of length/width of genitiventrianal shield <1.5............................................ 7

7. Dorsolateral and opisthogastric soft integument with at least 12 pairs of setae............ 8

— Dorsolateral and opisthogastric soft integument with at most 11 pairs of setae...........11

8. Soft integument with at least 13 pairs of marginal and opisthogastric setae............... 9

— Soft integument with 12 pairs of marginal and opisthogastric setae.................... 10

9. Tubes of sperm access system with a dark-brown part in apical, soft integument with six pairs of r. R. ( r6, R 1, R 3– R 6) and seven pairs of opisthogastric ( JV3–JV5, ZV1, ZV3–ZV5) setae............................................................ O. digitus Özbek, 2016

— Tubes of sperm access system without dark-brown part in apical, soft integument with eight pairs of r. R. ( r6, R 1, R 3– R 8) and six pairs of opisthogastric ( JV3– JV5, ZV2– ZV4) setae........................................................................ O. iraniensis n. sp.

10. Tubes of sperm access systems short, well sclerotized and with ductus well indicated and observable; gland pore gdS4 between setae Z2 and S4; pre-anal setae Jv2 connected by a straight line.......................................... O. ovatus Özbek and Halliday, 2015

— Tubes of sperm access systems longer, weakly sclerotized and with ductus inconspicuous, difficult to discern; gland pore gdS4 and setae S4 aligned transversally; pre-anal setae Jv2 not connected by a straight line....................................... O. vlastae Mašán, 2007

11. Soft integument with 11 pairs of marginal and opisthogastric setae; tubes of sperm access system thin and slightly curved............................. O. vysotskajae Koroleva, 1976

— Soft integument with 10 pairs of marginal and opisthogastric setae; tubes of sperm access system thick, strongly recurved, hook-shaped.......... O. prolixus Özbek and Halliday, 2015

12. Tubes of sperm access system very long, with several bends; length of dorsal shield 730-840 O. compositus Koroleva, 1976

— Tubes of sperm access system short or normal in length, without bends................ 13

13. Tubes of sperm access system thick and strongly sclerotized......................... 14

— Tubes of sperm access system thin and weakly sclerotized............................ 18

14. Metapodal plates fused with lateral margins of genitiventrianal shield................. 15

— Metapodal plates free............................................................. 16

15. Tubes of sperm access system short and uniform in width; genitiventrianal shield with about equal length and width................................ O. caucasicus Koroleva, 1976

— Tubes of sperm access system long and expanded apically; genitiventrianal shield longer than wide (length/width 1.12)................................... O. hallidayi Özbek, 2014

16. Tubes of sperm access system expanded apically.......... O. adsharicus Koroleva, 1976

— Tubes of sperm access system uniform in width..................................... 17

17. Tubes of sperm access system longer, apically reaching each other; sternal area between st2 and st3 with sculptural transverse line; lateral and opisthogastric integument with 11 pairs of setae................................................... O. kacheticus Koroleva, 1976

— Tubes of sperm access system shorter, apically not reaching each other; sternal area between st2 and st3 without sculptural transverse line; lateral and opisthogastric integument with 13 pairs of setae............................................... O. semicirculus Özbek, 2016

18. Dorsal setae shorter ( J4 90–110); length of dorsal shield 650–730; geniti-ventrianal shield approximately subequal in length and width (length 0.34–0.39, width 0.33–0.36); tubes of sperm access system opening near coxae IV...................... O. annae Koroleva, 1976

— Dorsal setae longer ( J4 120); geniti-ventrianal shield longer than wide (length 0.33–0.40, width 0.30–0.34); tubes of sperm access system opening between coxae III and IV........ 19

19. Genu and tibia of legs III and IV with small tubercles; tubes of sperm access system with broadened base............................................... O. golubevi Reitblatt, 1958

— Genu and tibia of legs III and IV without tubercles; tubes of sperm access system relatively thin in basal part................................................ O. sklari Koroleva, 1976

Key to species (females) of the genus Olopachys Berlese occurring in Iran

1. Tubes of sperm access system quite long, spiralled apically ( Figure 4A View Figure 4 )..... O. compositus Koroleva, 1976

— Tubes of sperm access system short ( Figure 4B View Figure 4 ) or normal in length, straight or moderately curved apically ( Figure 3B View Figure 3 , 4C View Figure 4 )........................................................ 2

2. Tubes of sperm access system much shorter than distance between (paraxial margins of) coxae IV, and uniform in widths, without bends ( Figure 4B View Figure 4 ); metapodal plates fused with lateral margins of genitiventrianal shield..................... O. caucasicus Koroleva, 1976

— Tubes of sperm access system longer, approximately as long as distance between coxae IV, slightly tapered and strongly curved apically ( Figures 3B View Figure 3 , 4C View Figure 4 ); metapodal plates free.................................................................... Olopachys iraniensis n. sp.