Theridion chenzhangfui Lin & Li, 2024

Lin, Yejie, Li, Shuqiang, Mo, Haolin & Wang, Xihao, 2024, Thirty-eight spider species (Arachnida: Araneae) from China, Indonesia, Japan and Vietnam, Zoological Systematics 49 (1), pp. 4-98 : 82-85

publication ID	https://doi.org/ 10.11865/zs.2024101
publication LSID	lsid:zoobank.org:pub:CA760FC0-4A28-4FEC-8D5F-766024ACF490
DOI	https://doi.org/10.5281/zenodo.10941319
persistent identifier	https://treatment.plazi.org/id/81114138-FFCA-FFB3-7D9F-FEA2C020FB0D
treatment provided by	Felipe
scientific name	Theridion chenzhangfui Lin & Li
status	sp. nov.

Treatment

Theridion chenzhangfui Lin & Li , sp. nov. ( Figs 68–69 View Figure 68 View Figure 69 , 73A–B View Figure 73 , 75 View Figure 75 )

Etymology. This new species is named after Prof. Zhangfu Chen in honor of his contribution to the taxonomy of spiders in Zhejiang Province; noun (name) in genitive case.

Diagnosis. The male of the new species is similar to T. undatum Zhu, 1998 by the horn-shaped tegular apophysis and spoon-shaped conductor. However, the new species can be distinguished from T. undatum by the extremely large embolic base, and the ratio of the width of the embolic base to the width of the bulb is almost 1.5 (vs. 0.5). Females can be distinguished from other congeners by the presence of a finger-shaped scape (vs. absent).

Description. Male (holotype). Total length 2.66, carapace 1.11 long, 0.95 wide, opisthosoma 1.53 long, 1.32 wide. Eye sizes and interdistances: AME 0.05, ALE 0.04, PME 0.04, PLE 0.04, AME–AME 0.04, AME–ALE 0.01, PME–PME 0.03, PME–PLE 0.03, AME–PME 0.01, ALE–PLE 0. Chelicerae with 1 promarginal tooth. Leg measurements: I 6.41 (1.87, 2.02, 1.85, 0.67), II 5.10 (1.52, 1.61, 1.35, 0.62), III 3.92 (1.22, 1.18, 1.02, 0.50), IV 4.04 (1.64, 1.79, 1.55, 0.54).

Coloration ( Fig. 73A View Figure 73 ). Carapace yellow, edge black, eyes with black rings. Chelicerae yellow. Endites and labium pale yellow. Sternum paler yellow. Legs paler yellow, covered with sparse setae. Opisthosoma oval, pale yellow with black pattern. Spinnerets yellow.

Palp ( Fig. 68 View Figure 68 ). Patella almost as long as tibia. Cymbium almost 2 times longer than wide. Cymbium covered with sparse setae. Tegular apophysis horn shaped Terminal apophysis tip expanded, strongly sclerotized. Conductor spoon shaped, membranous. Embolic base expanded. Embolus originates at 1:30-o’clock-position, filiform.

Female (paratype Ar44888). Total length 3.67, carapace 1.29 long, 1.17 wide, opisthosoma 2.23 long, 2.06 wide. Eye sizes and interdistances: AME 0.05, ALE 0.05, PME 0.04, PLE 0.04, AME–AME 0.04, AME–ALE 0.03, PME–PME 0.04, PME–PLE 0.06, AME–PME 0.05, ALE–PLE 0. Chelicerae as in male. Leg measurements: I 7.21 (2.11, 2.36, 2.03, 0.71), II 5.76 (1.74, 1.83, 1.55, 0.64), III 4.81 (1.54, 1.44, 1.33, 0.50), IV 5.07 (1.63, 1.59, 1.32, 0.53).

Coloration ( Fig. 73B View Figure 73 ). Similar to that of male, except darker.

Epigyne ( Fig. 69 View Figure 69 ). Epigynal plate almost as long as wide, anterior part with hood, posteriorly with finger-shaped scape. Copulatory openings situated on posterior part of atrium. Copulatory ducts meandering, with 7 loops, tip strongly sclerotized. Spermathecae almost globular, unseparated. Fertilization duct directed at 1:00-o’clock-position from spermatheca.

Material examined. Holotype ♂ (IZCAS-Ar44887), China: Zhejiang, Hangzhou City, Gongshu Distr. , Banshan National Forest Park (30.3615°N, 120.1968°E), 2.XII.2023, Jiang Chang and Zixian Fang leg. Paratypes. 1♂ 3♀ (IZCASAr44888–Ar44891), same data as holotype GoogleMaps .

Distribution. Known only from the type locality.

Habitat. Living in bamboo ( Figs 75A–B View Figure 75 ).