Stiphropus soureni Sen, 1964

Li, Fengyuan, Lin, Yejie & Li, Shuqiang, 2023, Notes on two Stiphropus species from China (Araneae, Thomisidae), Biodiversity Data Journal 11, pp. 105695-105695 : 105695

Stiphropus soureni Sen, 1964

Materials

Type status: Holotype. Occurrence: recordedBy: Shri S. Biswas; individualCount: 1; sex: female; lifeStage: adult; occurrenceID: 80E3E6C2-C7B3-50D7-A130-DAD83EBB5051; Taxon: scientificName: Stiphropus soureni; Location : country: China; stateProvince: Tibet; county: Lhoka ; locality: Cona City , Dalongzong , Morshing (Mursing) Village ; verbatimCoordinates: 27.1644°N, 92.2161°E; Identification: identifiedBy: J. K. Sen; dateIdentified: 1964; identificationRemarks: not examined; Event: year: 1961; month: 9; day: 7; Record Level: institutionID: Zoological Survey India; institutionCode: Calcutta 2805/ 18 Type status: Other material. Occurrence: recordedBy: Zhuo Chen ; individualCount: 1; sex: male; lifeStage: adult; occurrenceID: BF77FA44-4378-5C82-A84E-78595BCA4025; Taxon : scientificName: Stiphropus soureni; Location : country: China; stateProvince: Tibet; county: Nyingchi ; locality: Medog County, Jiangxin Village ; verbatimCoordinates: 29.2001°N, 95.1246°E; Identification : identifiedBy: Yejie Lin ; dateIdentified: 2017; Event : year: 2015; month: 8; day: 15; habitat: under bark; Record Level : institutionCode: IZCAS-Ar 44584 Type status: Other material. Occurrence: recordedBy: Zhuo Chen ; individualCount: 1; sex: female; lifeStage: adult; occurrenceID: BDBF7D3E-8D76-5E3F-A306-9739D018B9EA; Taxon : scientificName: Stiphropus soureni; Location : country: China; stateProvince: Tibet; county: Nyingchi ; locality: Medog County, Jiangxin Village ; verbatimCoordinates: 29.2001°N, 95.1246°E; Identification : identifiedBy: Yejie Lin ; dateIdentified: 2017; Event : year: 2015; month: 8; day: 15; habitat: under bark; Record Level : institutionCode: IZCAS-Ar44585

Description

Male. Total length 3.43; carapace 1.59 long, 1.44 wide, opisthosoma 1.80 long, 1.85 wide. Eye sizes and interdistances: AME 0.05, ALE 0.07, PME 0.02, PLE 0.06, AME-AME 0.05, AME-ALE 0.11, PME-PME 0.13, PME-PLE 0.18, AME-PME 0.06, ALE-PLE 0.08. Chelicerae with seven promarginal spines. Endites 3 times longer than wide. Leg measurements: I 3.41 (0.84, 1.09, 0.58, 0.90), II 3.53 (0.92, 1.15, 0.59, 0.87), III 2.71 (0.79, 0.95, 0.44, 0.53), IV 2.71 (0.87, 0.87, 0.44, 0.53).

Colouration (Fig. 5 b). Carapace dark-brown, covered with long sparse brown setae, glabrous posteriorly. Endites and labium dark-brown. Sternum brown. Legs dark-brown, covered with plumose setae, more obvious in metatarsi and tarsi. Opisthosoma orange, covered scutum, with long, sparse brown setae and seven obvious muscle dots. Spinnerets yellow.

Palp (Fig. 3 ). Patella almost as long as tibia. Tibia with two apophyses, ventral tibial apophysis blunt, little curved; dorsal tibial apophysis almost two times longer than ventral tibial apophysis, terminal sharp. Cymbium slightly longer than wide (1:1.2). Cymbium covered with sparse plumose setae at dorso-prolateral half, with a sub-triangular projection adjacent to the tutaculum in retrolateral view. Tegulum crescent-shaped. Embolus falciform, wrinkled, terminal sharp in ventral view, widest at the middle, originating from 11:30 o’clock position and its tip ending at 2:00 o'clock position.

Female. See Ono (1980) (Fig. 4 and Fig. 5 b). Large scuta around the pair of largest muscle dots.

Diagnosis

The male is similar to that of S. ocellatus Thorell, 1887 by the curved embolus, terminal sharp and long, strong dorsal tibial apophysis (See Ono (1980), figs. 22-27). However, the new species can be distinguished from S. ocellatus by the embolus pointed to 1:30 o’clock position and its tip ending at 2:00 o'clock position [vs. pointed to 2:00 o’clock position and its tip ending at 3:00 o’clock position in S. ocellatus ( Ono (1980), figs. 22 and 25) and dorsal tibial apophysis pointed prolaterally [vs. point anteriorly in S. ocellatus ( Ono (1980), figs. 23, 24, 26 and 27). For the diagnosis of females, see Ono (1980). In habitus, S. soureni sp. n. with orange opisthosoma in male (Fig. 5 b) (black in S. ocellatus ).

Distribution

China (Tibet) (Fig. 7 ).

Biology

This species live under the bark of trees.

Notes

The male is described here for the first time.

Figures

Figure 3. Stiphropus soureni, male. A Prolateral view; B Ventral view; C Retrolateral view. Abbreviations: DTA dorsal tibial apophysis; E embolus; Tu tutaculum; VTA ventral tibial apophysis.

Figure 4. Stiphropus soureni female. A Epigyne, ventral view; B Vulva, dorsal view. Abbreviations: AG accessory gland; CD copulatory duct; CO copulatory opening; FD fertilisation duct; S spermatheca; Tu tutaculum.

Figure 7. Distribution records of Stiphropus species in Asia: 1 Stiphropus falciformus; 2 S. myrmecophilus; 3 S. qianlei sp. n.; 4 S. ocellatus; 5 S. soureni. Brown circles shows the holotypes collection located.