Trachelas kavanaughi, Tang & Yan & Zhao & Peng, 2024

Tang, Gang, Yan, Wen-long, Zhao, Yi & Peng, Xian-jin, 2024, Description of two new species of the genus Trachelas L. Koch, 1872 and the male of T. gaoligongensis Jin, Yin & Zhang, 2017 from China (Araneae, Trachelidae), ZooKeys 1215, pp. 127-138 : 127-138

Trachelas kavanaughi sp. nov.

Figs 5 , 7 A, B

Type material.

Holotype • ♀ ( HNU - DHK-2004-058 ); China, Yunnan Prov., Gongshan County, Dulongjiang Township, south of Dizhengdang Village along Silalong River ; 28.07654 ° N, 98.32603 ° E; 1890 m a. s. l.; 28 October 2004; D. H. Kavanaugh leg.

Etymology.

The species is named in honor of the type specimen collector, D. H. Kavanaugh, the curator emeritus at the California Academy of Sciences.

Diagnosis.

The female of this new species (Figs 5 E, F , 7 A, B ) resembles that of Trachelas gaoligongensis (see Figs 3 , 4 D, E ) in the shape of the atrium and the secondary spermathecae but differs as follows: (1) the atrium is wider than long in ventral view (vs. about as long as wide); (2) the copulatory openings are located on the anterior of the genitalia in ventral view (vs. located on posterior); (3) the primary spermathecae are round in dorsal view (vs. oval); and (4) the interdistance of the secondary spermathecae is narrower than the width of the primary spermathecae in dorsal view (vs. more than the twice width of the primary spermathecae).

Description.

Female (holotype) (Fig. 5 A-D ). Total length 4.45. Carapace 1.75 long, 1.61 wide; abdomen 2.68 long, 1.79 wide. Carapace brown, smooth, fovea black, small and distinct. Chelicerae brown, with three promarginal and two retromarginal teeth. Sternum and labium light brown, and truncated margin of sternum with distinct crescent-shaped depression. Eye sizes and interdistances: AME 0.13, ALE 0.13, PME 0.13, PLE 0.13, AME - AME 0.05, AME - ALE 0.02, PME - PME 0.10, PME - PLE 0.08, ALE - PLE 0.05. MOA 0.27 long, anterior width 0.30, posterior width 0.34. Clypeus height 0.12. Legs light brown alternating with dark brown. Leg measurements: leg I 5.53 (1.72, 2.02, 1.04, 0.75), II 5.30 (1.60, 1.93, 1.06, 0.71), III 4.20 (1.22, 1.43, 1.02, 0.53), IV 5.72 (1.66, 1.95, 1.46, 0.65). Leg formula: 4123. Abdomen oval, apricot-white; dorsum with five black-brown chevrons decreasing in size from anterior to posterior; venter with two blurry gray longitudinal stripes. Spinnerets yellowish.

Epigyne (Figs 5 E, F , 7 A, B ). Atrium wider than long copulatory openings small, located at anterior of epigyne; copulatory ducts C-shaped, secondary spermathecae narrowest at junction with copulatory ducts, widening from copulatory openings to spermathecae; connecting ducts axisymmetric; primary spermathecae round, connected to lightly sclerotized fertilization ducts.

Male. Unknown.

Distribution.

Known only from the type locality (Fig. 8 ).

Figures

Figure 3. Trachelas gaoligongensis Jin, Yin & Zhang, 2017 (HNU - 20071010) A genitalia, ventral view B ditto, dorsal view. Scale bars: 0.3 mm.

Figure 4. Trachelas gaoligongensis Jin, Yin & Zhang, 2017 A male left palp, prolateral view B ditto, ventral view C ditto, retrolateral view D genitalia, ventral view E ditto, dorsal view. Scale bars: 0.3 mm.

Figure 5. Trachelas kavanaughi sp. nov., female (holotype) A habitus, dorsal view B ditto, ventral view C ocular area, dorsal view D carapace, frontal view E genitalia, ventral view F ditto, dorsal view. Scale bars: 0.5 mm (A-D); 0.3 mm (E, F).

Figure 7. A, B Trachelas kavanaughi sp. nov. C, D Trachelas ventriosus sp. nov. A genitalia, ventral view B ditto, dorsal view C ditto, ventral view D ditto, dorsal view. Scale bars: 0.3 mm.

Figure 8. Collection localities of Trachelas gaoligongensis Jin, Yin & Zhang, 2017, Trachelas kavanaughi sp. nov. and Trachelas ventriosus sp. nov.