Sernokorba Kamura, 1992

Galle-Szpisjak, Nikolett, Galle, Robert & Szűts, Tamas, 2023, A review of the genus Sernokorba Kamura, 1992 (Araneae, Gnaphosidae), Zoosystematics and Evolution 99 (2), pp. 325-335 : 325

Genus Sernokorba Kamura, 1992

Diagnosis.

The genus is a members of the Herpylline group ( Azevedo et al. 2018), with a conspicuous black and white abdominal pattern (Figs 5-7 ). Males can be recognized by the following combination of characters: a single RTA that is about as long as the cymbium, thin, slightly bent, evenly narrowing terminally, and with a hook-shaped end (Figs 13-16 ). The conductor is about as long or longer than the tegulum, not twisted around the embolus (Figs 9-11 , 13-15 , 29 , 31 , 33 ). Females can be recognized by the kidney-shaped spermathecae (Figs 40 , 42 ) and the sperm ducts being as long as the height of the spermathecae (Figs 40 , 42 , 44 , 46 ).

Description.

See Kamura (1992). Furthermore, males in all the three examined species have a characteristic apical depression on the retrolateral side of gnathocoxae (Fig. 8 ), which females do not have ( Kamura 1992: fig. 4, Murphy 2007: 296, 310). This sexually dimorphic character, was not mentioned in the original descriptions of S. pallidipatellis and S. tescorum , or in the description of the genus itself.

Distribution.

The genus has been reported from East Asia (Korea, China, Russia and Japan) and from Western, Central and Southern Europe.

Type species.

Prosthesima pallidipatellis Bösenberg & Strand, 1906 - by original designation by Kamura (1992); female holotype from Japan: Saga Pref., in Senckenberg Museum, Frankfurt am Main - not examined.

Figures

Figures 5 - 8. European Sernokorba species; 5. Sernokorba tescorum, male habitus, dorsal view; 6 - 8. Sernokorba betyar sp. nov.; 6. Female habitus, dorsal view; 7. Male habitus, dorsal view; 8. Male, gnathocoxae, ventral view. Scale bars: 1.0 mm.

Figures 9 - 19. Palp comparison of the Sernokorba species; 9, 13. Sernokorba tescorum 9. Ventral view; 13. Retrolateral view; 10, 11, 14, 15, 17 - 19. Sernokorba betyar sp. nov. 10. Ventral view; 11. Proventral view; 14, 15. Retrolateral view; 17. Partially expanded palp, showing the conductor details, retrolateral view; 18. Conductor closeup, retrolateral view; 19. Slightly different angle; 12, 16. Sernokorba pallidipatellis; 12. Ventral view; 16. Retrolateral view. Scale bar: 0.25 mm.

Figures 29 - 39. Illustrations of the male copulatory organs; 29, 30, 35, 36. Sernokorba tescorum; 29. Male copulatory organ ventral view; 30. Male copulatory organ, retrolateral view; 35. Conductor ventral view; 36. Conductor retrolateral view; 31, 32, 37, 38. Sernokorba betyar sp. nov.; 31. Male copulatory organ ventral view; 32. Male copulatory organ retrolateral view; 37. Conductor ventral view; 38. Conductor retrolateral view; 33, 34, 39. Sernokorba pallidipatellis; 33. Male copulatory organ ventral view; 34. Male copulatory organ retrolateral view; 39. Conductor ventral view.

Figures 40 - 47. Illustrations of the female genitalia; 40, 41 Sernokorba betyar sp. nov.; 40. Dorsal view; 41. Ventral view; 42, 43. Sernokorba tescorum; 42. Dorsal view; 43. Ventral view; 44, 45. Sernokorba pallidipatellis; 44. Dorsal view; 45. Ventral view; 46, 47. Sernokorba fanjing; 46. Dorsal view; 47. Ventral view.