Episinus anfu, Liang & Liu & Yin & Xu, 2025

Liang, Yun, Liu, Jinnan, Yin, Haiqiang & Xu, Xiang, 2025, On new spider species of the genus Episinus (Araneae, Theridiidae) from China and proposal of five species groups, Biodiversity Data Journal 13, pp. e 144222-e 144222 : e144222-

publication ID

https://doi.org/10.3897/BDJ.13.e144222

publication LSID

lsid:zoobank.org:pub:9803252D-9F04-4D1B-8015-FE3C103916BA

DOI

https://doi.org/10.5281/zenodo.14832091

persistent identifier

https://treatment.plazi.org/id/F5978F3A-3A12-5041-ADA6-699BB23A50DB

treatment provided by

Biodiversity Data Journal by Pensoft

scientific name

Episinus anfu
status

sp. nov.

Episinus anfu sp. nov.

Materials

Type status: Holotype. Occurrence: recordedBy: Zongguang Huang, Yun Liang, Rongrong Liao and Yingli Wen; individualCount: 1; sex: female; lifeStage: adult; occurrenceID: CAE1726D-C2FE-59D2-8EEC-BAC49D2919DE; Taxon: scientificName: Episinus anfu ; Location: country: China; stateProvince: Jiangxi; county: Anfu; verbatimLocality: Yangshimu, Yeniugu; verbatimElevation: 563 m; verbatimCoordinates: 27°31'35''N, 114°14'41''E; Event: year: 2022; month: 6; day: 24; Record Level: institutionID: HNU 817 GoogleMaps

Type status: Paratype. Occurrence: recordedBy: Zongguang Huang, Yun Liang, Rongrong Liao and Yingli Wen; individualCount: 1; sex: female; lifeStage: adult; occurrenceID: E93366EA-8022-53FB-9755-61EDA3A84DCA; Taxon: scientificName: Episinus anfu ; Location: country: China; stateProvince: Jiangxi; county: Anfu; verbatimLocality: Yangshimu, Yeniugu; verbatimElevation: 563 m; verbatimCoordinates: 27°31'35''N, 114°14'41''E; Event: year: 2022; month: 6; day: 24; Record Level: institutionID: HNU 816 GoogleMaps

Description

Female (Holotype): Total length 5.19, carapace 1.77 long, 1.61 wide, abdomen 3.41 long, 2.65 wide. Eye sizes and inter-distances: AME 0.12, ALE 0.13, PME 0.13, PLE 0.13; AME-AME 0.08, AME-ALE 0.03, PME-PME 0.10, PME-PLE 0.09. Clypeus height 0.28. STL 1.12, STW 0.80. Legs measurements: I 6.98 (2.03, 0.78, 1.57, 1.98, 0.62); II 4.78 (1.48, 0.64, 0.92, 1.15, 0.59); III 3.80 (1.11, 0.54, 0.68, 0.97, 0.50); IV 7.74 (2.31, 0.89, 1.59, 2.23, 0.72). Leg formula IV-I-II-III.

Colouration (Fig. 1 View Figure 1 A – C): Carapace pear-shaped, red-brown, fovea and radial furrow deep, brown (Fig. 1 View Figure 1 A). Chelicerae light brown, without teeth. Pedipalp brown. Endite longer than wide. Labium extending, nearly rectangle. Sternum longer than wide, lateral margins sinuous and brown. (Fig. 1 View Figure 1 B). Legs brown, except for pale trochanters III-IV, femur III and basal half of femur IV. Abdomen brown, dorsum with two white arcuate stripes anteriorly and two pairs of brown spots medially (Fig. 1 View Figure 1 A), venter brown, except for reddish posterolateral region, bearing four pairs of brown dots centrally (posterior two pairs more distinct than anterior two pairs) and a slightly arched white line before spinnerets (Fig. 1 View Figure 1 B); pentagonal-shaped, with widest part at three quarters of abdominal length (Fig. 1 View Figure 1 A) and with short hump on each side as seen in lateral view (Fig. 1 View Figure 1 C).

Epigyne (Fig. 1 View Figure 1 D and Fig. 2 View Figure 2 A): with small and indistinct atria (A) separated by sclerotised median septum. Vulva (Figs. 1 E-F and Fig. 2 View Figure 2 B): copulatory ducts (CD) long, sinuous and running laterally along spermathecae. Spermathecae (S) longitudinal parallel to each other, with swollen anterior portions and connecting to CD laterally. Fertilisation ducts (FD) originating from inside sides of spermathecae and converging medially.

Male. Unknown.

Diagnosis

The female of this new species is similar to that of E. nubilus Yaginuma, 1960 in having small atria (compare Fig. 1 View Figure 1 D and Fig. 2 View Figure 2 A with fig. 27 E in Kim (2021) and fig. 57 B in Zhu and Zhang (2011)), but can be distinguished from the latter by match-head-shaped spermathecae with swollen anterior portions (vs. oval spermathecae with small anterior portions in E. nubilus ), long and distinct copulatory ducts which can be seen in ventral view (vs. indistinct copulatory ducts in E. nubilus ) (compare Fig. 1 View Figure 1 D – F and Fig. 2 View Figure 2 with fig. 57 C in Zhu and Zhang (2011)).

Etymology

The specific epithet is derived from the collection locality of the types of new species and is a noun, neutral.

Distribution

Known only from the type locality, China (Jiangxi) (Fig. 9 View Figure 9 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Theridiidae

Genus

Episinus