Tonsilla, WANG AND YIN

WANG, XIN-PING, 2002, A Generic-Level Revision Of The Spider Subfamily Coelotinae (Araneae, Amaurobiidae), Bulletin of the American Museum of Natural History 2002 (269), pp. 1-150 : 136-138

TONSILLA WANG AND YIN

Tonsilla Wang and Yin, 1992: 263 . – Platnick, 1997: 671.

TYPE SPECIES: Tonsilla truculenta Wang and Yin, 1992 , by original designation.

DIAGNOSIS: Females can be easily recognized by the large epigynal atrium, the posterior extension of the anterior atrial margin, the medially situated epigynal teeth, and the large copulatory ducts (figs. 384, 385), and males by the long, dorsally curved patellar apophysis and the short, lobed conductor (figs. 386–388). Both sexes have three promarginal and two retromarginal cheliceral teeth (fig. 396).

DESCRIPTION: See description of type species (below).

DISTRIBUTION: Central China (map 18).

COMPOSITION: Four species are included in the genus Tonsilla .

1. Tonsilla eburniformis Wang and Yin, 1992 : female holotype from Muyu, Shenlongjia, Hubei, China, in HTU, examined.

2. Tonsilla imitata Wang and Yin, 1992 : female holotype from Qiayang, Hunan, China, in HBI, not examined.

3. Tonsilla truculenta Wang and Yin, 1992 : female holotype, male and female paratypes from Tianzishan, Sangzhi, Hunan, China, in HEU, examined.

4. Tonsilla variegatus ( Wang et al., 1990) : female holotype and male paratype from Huangshan, Anhui, China, in HBI, examined. NEW COMBINATION (transferred here from Coelotes ).

Tonsilla truculenta Wang and Yin Figures 384–399

Tonsilla truculenta Wang and Yin, 1992: 263 , figs. 1–10 (female holotype, male and female paratypes from Tianzishan, Sangzhi, Hunan, China, in HTU, examined). – Song et al., 1999: 395, figs. 13I, 230I–L.

DIAGNOSIS: Females can be distinguished from those of T. eburniformis and T. imitata by the weak, overlapping epigynal teeth (figs. 384, 385). Males can be recognized by the long patellar apophysis and the broad, lobed conductor (figs. 386–399).

DESCRIPTION: Total length 7.00 –16.0. From front, anterior eye row slightly procurved, posterior row strongly procurved; AME smallest, ALE subequal to PLE, PME slightly smaller than PLE; AME­AME, AME­ ALE subequal to AME diameter; ALE­PLE close together; PLE­PME widely separated; PME­PME subequal to AME­AME, slightly shorter than PME diameter, AME­PME separated by roughly AME diameter or slight longer; clypeus height about twice AME diameter; chilum divided, long (fig. 389). Chelicerae with three promarginal, two retromarginal teeth (fig. 390). Labium longer than wide.

Tarsal organ situated close to distal end of tarsus, anterior of distalmost trichobothrium (figs. 391–393). Apex of ALS with 2 major ampullate gland spigots (MAP), 46–50 piriform gland spigots (PI) in both sexes; PMS with 1 or 2 minor ampullate gland spigots (mAP), about 58–71 aciniform gland spigots (AC) in both sexes, female PMS with 2 cylindrical gland spigots (CY); PLS with about 83–138 aciniform gland spigots in both sexes, 2 cylindrical gland spigots in female (figs. 394–399).

Epigynum with slender epigynal teeth, situated close together anteromedially; atrium large; septum present; copulatory ducts broad, situated mesad of spermathecae; spermathecal heads large; spermathecae longitudially elongated, convoluted, with stalks and bases indistinct (figs. 384, 385). Male palp with long, dorsally curved patellar apophysis; RTA long, with distal end strongly extended; lateral tibial apophysis present; cymbial furrow short, with dorsal edge slightly concave; tegular sclerite present; conductor moderately long, lobed; conductor dorsal apophysis slender; conductor lamella short, less developed; embolus basal in origin, moderately long, linear; median apophysis spoonlike, with extended distal end (figs. 386–388).

MATERIAL EXAMINED: CHINA: Hunan: Sangzhi, Tianzishan, October 27, 1989, female holotype, 1 male and 7 female paratypes (J. F. Wang, HTU).

DISTRIBUTION: China (Hunan).

UROCORAS OVTCHINNIKOV

Figures

Figs. 384, 385. Tonsilla truculenta Wang and Yin, female. 384. Epigynum. 385. Vulva.

Figs. 386, 387. Tonsilla truculenta Wang and Yin, male palp. 386. Ventral view. 487. Retrolateral view.

Figs. 388–390. Tonsilla truculenta Wang and Yin. 388. Male palp, prolateral view. 389. Carapace, front view. 390. Chelicera, ventral view.

Figs. 391–393. Tonsilla truculenta Wang and Yin, female. 391. Tarsus, showing position of tarsal organ (double arrows) and the distalmost trichobothrium (single arrow). 392. Tarsal organ. 393. Trichobothrium.