Coreodrassus Paik, 1984

Zhang, Feng & Zhu, Ming-Sheng, 2008, Review of the genus Coreodrassus (Araneae: Gnaphosidae) from China, Zootaxa 1761, pp. 30-36 : 31

Coreodrassus Paik, 1984

Coreodrassus Paik, 1984: 49 ; Jung et al., 2005: 168.

Type species: Coreodrassus coreanus Paik, 1984 [= C. lancearius ( Simon, 1893) ], by original designation. Diagnosis: Male palp with bifid retrolateral tibial apophysis, and a very long retrolateral patellar apophysis, hooked or forked at the distal end. Tibiae III with a dorsal median spine.

Description: Total length 6.00–9.90. Carapace ( Figs 1 , 7 ) elongate-ovoid in dorsal view, low, narrowed toward front, slightly invaginated posteriorly, widest at coxae II and III, usually light yellow or orange, with long, erect, slender, black setae; thoracic groove short, longitudinal. From above, anterior eye row recurved, posterior eye row procurved ( Fig. 10 ); from front, both eye rows procurved; AME circular, dark, PME irregularly rectangular, light, usually largest, ALE and PLE oval, light; AME separated from each other by roughly their diameter, from ALE by half their width or less; PME separated from each other by roughly their radius or less, from PLE by 1.5 times their width; MOA usually slightly longer than wide, wider in front than in back. Clypeal height almost equal to AME diameter. Chelicerae ( Fig. 9 ) usually with three promarginal and two retromarginal teeth. Endites ( Fig. 8 ) short, rectangular, obliquely depressed, greatly narrowed at palpal insertion; labium broad, rebordered, round distally; sternum truncate at front, pointed behind, with strongly rebordered, sinuous margins. Leg formula: 4123; segments of legs light orange or yellow; metatarsi lacking preening comb, with sparse scopula; tarsi with two dentate claws, sparse claw tufts and dense scopula; trochanters with shallow notches. Typical leg spination pattern (only surfaces bearing spines listed): femora: I, II d1-1-0, p0-0-1; III d1-1-0, p0-1-1, r0-1-1; IV d1-1-0, p0-0-1, r0-0-1; patellae: III p0-1-0, r0-1-0; IV r0-1-0; tibiae: III d0-1-0, p1-1-1, r 0-1-1, v2-2 -2; IV p1-1-1, r 1-1-1, v2-2 -2; metatarsi: II v2 -0-0; III p1-1-1, r 1-1-2, v2-2 -2; IV p1-2-1, r 1-2-1, v2-2 -2. Abdomen ( Figs 1 , 7 ) light grey, with two pairs of muscle impressions, cluster of erect curved setae at anterior end. Six spinnerets, anteriors elongated, separated at base by their width. Male palpus ( Figs 5–6 , 12–13 ) with bifid retrolateral tibial apophysis extending laterally or posteriorly, and long retrolateral patellar apophysis, hooked or forked at the distal end. Base of embolus thick, tip largely concealed by small, membranous conductor in ventral view. Median apophysis large, hooked retrolaterally; sperm duct distinct, U-shaped in ventral view. Epigyne ( Fig. 2 ) with quadrate convex hairy plate, pronounced atrium anteriorly, copulatory openings concealed at lateral margins of atrium, and pair of broad epigynal cavities posteriorly. Vulva ( Fig. 3 ) with very short copulatory ducts connected with copulatory openings and spermathecae; spermathecae posteriorly placed, nearly ball-shaped, touching at midline, each with tube-shaped apophysis laterally.

Figures

FIGURES 1 – 6. Coreodrassus lancearius (Simon, 1893). 1. Female body, dorsal view. 2. Epigyne, ventral view. 3. Vulva, dorsal view. 4. Left male palp, dorsal view, showing tibial and patellar apophyses. 5. Left male palp, ventral view. 6. Left male palp, retrolateral view. A = atrium; CO = copulatory opening; EC = epigynal cavity; FD = fertilization duct; S = spermathecae; SA = spermathecal apophysis. Scale bars: 1, 1 mm; 2 – 6, 0.5 mm.

FIGURES 7 – 13. Coreodrassus forficalus sp. nov., male. 7. Body, dorsal view. 8. Endites, labium and sternum, ventral view. 9. Left chelicera, posterior view. 10. Eye region, dorsal view. 11. Left palp, dorsal view, showing tibial and patellar apophyses. 12. Left palp, ventral view. 13. Left palp, retrolateral view. C = conductor; E = embolus; MA = median apophysis; RPA = retrolateral patellar apophysis; RTA = retrolateral tibial apophysis; SD = sperm duct; ST = subtegulum; T = tegulum. Scale bars: 7 – 8, 1 mm; 9, 0.5 mm; 10 – 13, 0.4 mm.