Trachelas

Zhang, Feng, Fu, Jian-Ying & Zhu, Ming-Sheng, 2009, A review of the genus Trachelas (Araneae: Corinnidae) from China, Zootaxa 2235, pp. 40-58 : 42-43

Key to Chinese Trachelas species

1. Male .............................................................................................................................................................................. 2

- Female........................................................................................................................................................................... 5

2. Embolus short, with pointed tip; patella without apophysis ( Fig. 7 ) ........................................................... T. acuminus

- Embolus relatively long, tip blunt; patella with apophysis........................................................................................... 3

3. Carapace without granulations ( Fig. 11 ); embolus longer, tip rotated about 360° ( Figs. 12–14 ) ............... T. alticolus

- Carapace with granulations ( Figs. 1 , 17 , 20 , 23 , 36 ); embolus relative short, tip only curved, not rotated ................ 4

4. Conductor trapeziform ventrally ( Fig. 37 ); retrolateral tibial apophysis triangular from retrolateral view ( Fig. 39 ) .... ....................................................................................................................................................................... T. sinensis

- Conductor elongate oval ventrally ( Fig. 33 ); retrolateral tibial apophysis rectangular from retrolateral view ( Fig. 35 ) ..................................................................................................................................................................... T. japonicus

5. Copulatory openings posteriorly; epigynum with a M-shaped epigynal hood ( Fig. 9 ) .............................. T. acuminus

- Copulatory openings anteriorly or centrally; epigynum without epigynal hood ......................................................... 6

6. Epigynal plate with two triangular impressions ( Fig. 18 ) ....................................................................... T. fanjingshan

- Epigynal plate without impressions.............................................................................................................................. 7

7. Each spermatheca composed of two globose parts ( Fig. 16 ) ........................................................................ T. alticolus

- Each spermatheca only with one globose part............................................................................................................. 8

8. Bursa situated in the inner part of copulatory openings ( Fig. 22 ) ................................................................... T. fasciae

- Bursa situated in the outer part of copulatory openings .............................................................................................. 9

9. Bursa club-shaped ( Fig. 41 ) ........................................................................................................................... T. sinensis

- Bursa globose ( Fig. 32 ) ................................................................................................................................ T. japonicus

Figures

FIGURES 1 – 10. Trachelas acuminus (Zhu et An, 1988). 1. Male body, dorsal view. 2. Endites, labium and sternum of male, ventral view. 3. Left chelicera of male, posterior view. 4. Carapace and chelicerae of male, front view. 5. Tibia, metatarsus and tarsus of male right leg I, showing cusps. 6. Left male palp, prolateral view. 7. Same, ventral view. 8. Same, retrolateral view. 9. Epigynum, ventral view. 10. Vulva, dorsal view. Scale bars: 1 mm (1, 5); 0.3 mm (3, 9 – 10); 0.4 mm (6 – 8); 0.5 mm (2, 4).

FIGURES 11 – 16. Trachelas alticolus Hu, 2001. 11. Male body, dorsal view. 12. Left male palp, ventral view. 13. Same, prolateral view. 14. Same, retrolateral view. 15. Epigynum, ventral view. 16. Vulva, dorsal view. Scale bars: 1 mm (11); 0.3 mm (15 – 16); 0.4 mm (12 – 14).

FIGURES 17 – 19. Trachelas fanjingshan sp. nov. 17. Female, dorsal view. 18. Epigynum, ventral view. 19. Vulva, dorsal view. Scale bars: 1 mm (17); 0.3 mm (18 – 19).

FIGURES 20 – 22. Trachelas fasciae sp. nov. 20. Female, dorsal view. 21. Epigynum, ventral view. 22. Vulva, dorsal view. Scale bars: 1 mm (20); 0.3 mm (21 – 22).

FIGURES 23 – 30. Trachelas japonicus Bösenberg et Strand, 1906. 23. Male body, dorsal view (from Mt. Damao). 24. Left chelicera of male, posterior view (from Mt. Damao). 25. Endites, labium and sternum of male, ventral view (from Mt. Damao). 26. Male left metatarsus and tarsus IV, lateral view (from Mt. Damao). 27. Male left leg III, lateral view (from Mt. Damao). 28. Male right metatursus II, ventral view, showing cusps (from Mt. Baishi). 29. Male right metatarsus and tarsus I, lateral view, showing cusps (from Mt. Baishi). 30. Carapace and Chelicerae of male, front view (from Mt. Baishi). Ch = chilum; Cu = cusps; Gr = granulation; It = intercoxal triangles. Scale bars: 1 mm (23, 27 – 30); 0.3 mm (24 – 26).

FIGURES 36 – 41. Trachelas sinensis Chen, Peng et Zhao, 1995. 36. Male body, dorsal view. 37. Left male palp, ventral view. 38. Same, prolateral view. 39. Same, retrolateral view. 40. Epigynum, ventral view. 41. Vulva, dorsal view. Scale bars: 1 mm (36); 0.3 mm (40 – 41); 0.4 mm (37 – 39).

FIGURES 31 – 35. Trachelas japonicus Bösenberg et Strand, 1906. 31. Epigynum, ventral view. 32. Vulva, dorsal view. 33. Left male palp, ventral view. 34. Same, prolateral view. 35. Same, retrolateral view. Ah = atrial hood; Bu = bursa (= spermatheca 2, an additional sclerotized hollow receptacle, presumably used for sperm storage, von Engelhardt, 1910: 38); C = conductor; Cd = copulatory duct; Co = copulatory opening; E = embolus; Fd = fertilization duct; Pa = patellar apophysis; Rta = Retrolateral tibial apophysis; Sd = sperm duct; Sp = spermatheca 1 (connected to Fd); St = subtegulum; T = tegulum; Ta = tegular apophysis; Vfc = ventral femoral concavity. Scale bars: 0.3 mm (31 – 32); 0.4 mm (33 – 35).