Tmarus spicatus, Tang, Guo & Li, Shu-Qiang, 2009

Tang, Guo & Li, Shu-Qiang, 2009, The crab spiders of the Genus Tmarus from Xishuangbanna, Yunnan, China (Araneae: Thomisidae), Zootaxa 2223, pp. 48-68 : 62-64

Tmarus spicatus sp. nov.

Figs 12A–C , 13A–B

Etymology. The specific name comes from the Latin adjective spicatus and means spike like, refers to the shape of the epigynal ridge.

Diagnosis. This new species is similar to T. taiwanus Ono, 1977 , but can be separated from the latter by: 1) the shape of the epigynal ridge, 2) the copulatory ducts long and twisted complicated vs. short and simple curved in T. taiwanus .

Description. Female (holotype): Total length 5.50. Prosoma length 2.10, width 2.10; opisthosoma length 3.30, width 2.20. Prosoma brown with some grayish white stripes. Chelicerae, gnathocoxae, labium and sternum yellow. Eye measurements: AME 0.06; ALE 0.13; PME 0.08; PLE 0.11; AME–AME 0.20; AME– ALE 0.20; PME–PME 0.30; PME–PLE 0.40. MOA length 0.38 with front width 0.32 and back width 0.46, Legs yellow. Leg formula: 1243; leg measurements: I: 9.00 (2.70, 3.50, 1.80, 1.00); II: 9.10 (2.80, 3.50, 1.80, 1.00); III: 4.90 (1.50, 2.00, 0.80, 0.60); IV: 5.10 (1.70, 2.00, 0.80, 0.60). Opisthosoma dorsum grayish white with grayish black spots, also with 3 pairs of grayish black stripes posteriorly, venter gray.

Epigynum ( Figs 12B–C , 13A–B ). Epigynum with a long longitudinal epigynal ridge, copulatory openings located bilaterally in the posterior of ridge, copulatory ducts long, flat and twisted, spermathecae small.

Male: Unknown.

Distribution. China (Yunnan).

Figures

FIGURES 12 A – C. Tmarus spicatus sp. nov. A Female habitus, dorsal view; B Epigyne, ventral view; C Vulva, dorsal view. Scale bars: A = 1.0 mm; B – C = 0.1 mm.

FIGURE 13. A – B Tmarus spicatus sp. nov.; C – D. Tmarus taiwanus Ono, 1977; E – F. Tmarus undatus sp. nov. A, C, E Epigyne, ventral view; B, D, F Vulva, dorsal view. CO = copulatory opening, CD = copulatory ducts; ER = epigynal ridge; H = hood; S = spermatheca. Scale bars: A, C, E = 0.1 mm.