Tricholathys chenzhenningi sp. nov. (陈氏毛隐蛛)

Wang, Lu-Yu, Peng, Xian-Jin & Zhang, Zhi-Sheng, 2023, The first record of Tricholathys Chamberlin & Ivie, 1935 (Araneae, Dictynidae) from China, with a new combination and descriptions of seven new species, ZooKeys 1185, pp. 255-267 : 255

publication ID

https://dx.doi.org/10.3897/zookeys.1185.107005

publication LSID

lsid:zoobank.org:pub:568A472D-950D-4338-A7DF-56C6EE473761

persistent identifier

https://treatment.plazi.org/id/1A6CA21C-C5FC-5184-9B49-8310F58751E6

treatment provided by

ZooKeys by Pensoft

scientific name

Tricholathys chenzhenningi sp. nov. (陈氏毛隐蛛)
status

 

Tricholathys chenzhenningi sp. nov. (陈氏毛隐蛛) View in CoL

Figs 1 View Figure 1 , 4 View Figure 4 , 5 View Figure 5 , 16 View Figure 16

Type materials.

Holotype male: China, Qinghai, Menyuan County, Huangcheng Township, Liuhuanggou, 37°47′50.69″N, 101°16′48.23″E, elev. 3491 m, 13 August 2019, L.Y. Wang and Z.J. Shi leg. (SWUC-T-DI-08-01). Paratypes: 5 males and 5 females (SWUC-T-DI-08-02~11), with same data as holotype; 1 male (SWUC-T-DI-08-12), Qilian County, Ebao Town, Jiangyangling, 37°50′21.27″N, 101°6′47.75″E, elev. 3733 m, L.Y. Wang and Z.J. Shi leg.

Etymology.

The specific name is a patronym in honor of Prof. Zhenning Chen from Qinghai Normal University in Xining.

Diagnosis.

The new species is similar to T. ovtchinnikovi ( Marusik et al. 2017: 258, figs 2E, F, 4G-I, 5A-E, 6J-L) in having the embolus originating at about 7:30 o’clock position, the anterior arm of the conductor tapering gradually and terminating at about 9:30 o’clock, the posterior arm of conductor spiral, distal, and with a small tooth at the center, the copulatory ducts semicircular, the spermathecae spherical, and the fertilization ducts thin and hook-shaped; the new species differs from T. ovtchinnikovi in having the posterior arm of the conductor wide (narrow in T. subnivalis ), the retrolateral tibial apophysis fat and as wide as the tibia (slender in T. subnivalis and narrower than the tibia) (Figs 4A, B View Figure 4 , 5C, E-G View Figure 5 ), and the copulatory ducts rounded (oval in T. subnivalis ) (Figs 4C, D View Figure 4 , 5H-I View Figure 5 ).

Description.

Male (holotype). Habitus as in Fig. 5A View Figure 5 . Total length 3.73 (3.40-4.57 in male paratypes). Prosoma 1.77 long, 1.36 wide; opisthosoma 2.12 long, 1.36 wide. Eye sizes and interdistances: AME 0.07, ALE 0.09, PME 0.06, PLE 0.08; AME-AME 0.05, AME-ALE 0.04, PME-PME 0.12, PME-PLE 0.09, ALE-PLE 0.05. MOA 0.20 long, anterior width 0.18, posterior width 0.24. Clypeus height 0.12. Chelicerae with 4 promarginal and 3 retromarginal teeth. Leg measurements: I 4.08 (1.12, 1.55, 0.84, 0.57); II 3.29 (0.95, 1.09, 0.73, 0.52); III 2.92 (0.94, 0.91, 0.63, 0.44); IV 4.26 (1.24, 1.47, 1.00, 0.55). Leg formula: 4123.

Palp (Figs 4A, B View Figure 4 , 5C, E-G View Figure 5 ). Tip of cymbium with shorter tip and 4 spines. Anterior arm of conductor tapering gradually and terminating at about 9:30 o’clock position; posterior arm with small spine (Fig. 5C, F, G View Figure 5 ; 4A, B View Figure 4 ). Embolus originating at about 7:30 o’clock position; distal part covered by conductor.

Female (paratype). Habitus as in Fig. 5B View Figure 5 . Total length 3.84 (3.33-4.72 in other female paratypes). Prosoma 1.74 long, 1.35 wide; opisthosoma 2.37 long, 1.50 wide. Eye sizes and interdistances: AME 0.07, ALE 0.10, PME 0.07, PLE, 0.07; AME-AME 0.07, AME-ALE 0.05, PME-PME 0.11, PME-PLE 0.10, ALE-PLE 0.05. MOA 0.22 long, anterior width 0.20, posterior width 0.25. Clypeus height 0.10. Leg measurements: I 3.78 (1.11, 1.37, 0.75, 0.55); II 3.31 (1.00, 1.12, 0.70, 0.49); III 2.71 (0.81, 0.79, 0.67, 0.44); IV 4.03 (1.17, 1.37, 0.99, 0.50). Leg formula: 4123.

Epigyne (Figs 4C, D View Figure 4 , 5H, I View Figure 5 ). Copulatory openings cochleate, space between them wider than the diameter of the copulatory openings. Weakly sclerotized parts of copulatory ducts S-shaped, and strongly sclerotized part forming almost an entire circle. Spermathecae small, comma-shaped, nearly two times longer than its width. Space between spermathecae slightly narrower than space between copulatory ducts, nearly two times of the width of spermathecae.

Distribution.

China (Qinghai).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Dictynidae

Genus

Tricholathys