Thelcticopis pinmini Cai & Zhong, 2021

Cai, Chaohui, Lin, Yejie & Zhong, Yang, 2021, Description of a new species of Thelcticopis Karsch (Araneae, Sparassidae) from Guangxi Province, China, Biodiversity Data Journal 9, pp. 67437-67437 : 67437

Thelcticopis pinmini Cai & Zhong sp. n.

Materials

Type status: Holotype. Occurrence: recordedBy: Pinmin Li; individualCount: 1; sex: 1 male; lifeStage: adult; reproductiveCondition: in ethyl alcohol; Taxon : scientificName: Thelcticopis pinmini sp. nov.; order: Araneae ; family: Sparassdiae ; genus: Thelcticopis ; Location : continent: Asian ; country: China; countryCode: CHN; stateProvince: Guangxi; county: Fusui ; locality: Liuqiao Town ; decimalLatitude: -22.31; decimalLongitude: -107.71; Identification: identifiedBy: Yang Zhong; Event: samplingProtocol: by hand; year: 2018; month: 12; day: 7 Type status: Paratype. Occurrence: recordedBy: Pinmin Li; individualCount: 1; sex: 1 female; lifeStage: adult; reproductiveCondition: in ethyl alcohol; Taxon : scientificName: Thelcticopis pinmini sp. nov.; order: Araneae ; family: Sparassdiae ; genus: Thelcticopis ; Location : continent: Asian ; country: China; countryCode: CHN; stateProvince: Guangxi; county: Fusui ; locality: Liuqiao Town ; decimalLatitude: -22.31; decimalLongitude: -107.71; Identification : identifiedBy: Yang Zhong ; Event : samplingProtocol: by hand; year: 2018; month: 12; day: 7

Description

Male. PL 3.5, PW 3.6, AW 1.6, OL 2.8, OW 2.6. Eyes: AME 0.24, ALE 0.13, PME 0.13, PLE 0.16, AME-AME 0.22, AME-ALE 0.23, PME-PME 0.46, PME-PLE 0.32, AME-PME 0.19, ALE-PLE 0.09, CH AME 0.10, CH ALE 0.22. Spination: Palp: 131, 101, 0002; Fe: I 210, II-IV 311; Pa: I-IV 000; Ti: I-II 2028, III-IV 2026; Mt: I-II 0002, III-IV 2024. Measurements of palp and legs: Palp 5.4 (1.3, 0.7, 1.6, -, 1.8), I 11.7 (3.6, 1.8, 3.1, 2.5, 0.7), II 12.7 (4.1, 2.1, 3.2, 2.6, 0.7), III 10.4 (2.9, 1.4, 2.8, 2.5, 0.8), IV 10.1 (2.9, 1.3, 2.7, 2.4, 0.8). Leg formula: 2-1-3-4. Cheliceral furrow with three anterior and three posterior teeth, without denticles (Fig. 2 B). Dorsal prosoma deep reddish-brown, lateral margins dark. Fovea and redial furrows distinctly marked. Labium and gnathocoxae reddish-brown, both with distal parts brighter. Sternum deep reddish-brown, covered by small setae. Legs yellowish-brown with widely dark spots. Dorsal opisthosoma greyish-brown covered by short dark setae. Ventral opisthosoma yellowish-brown covered by densely dark spots (Fig. 4 A-B).

Palp as in diagnosis. Cymbium approximately two times longer than tibia in ventral view. Embolus arising from tegulum at 9- o’clock-position, with embolic tip distinctly wider than embolic apophysis. Conductor arising from tegulum in 12- o’clock-position. Tegular apophysis spoon-shaped, best seen in ventral view. Spermophore distinctly curved in retrolateral view. RTA arising medially from tibia, with three apices best seen in dorsal view. dRTA distinctly curved, U-shaped in prolateral view (Fig. 1 A-C, Fig. 2 A and Fig. 3 A-C).

Female. PL 3.6, PW 3.5, AW 1.6, OL 4.7, OW 3.2. Eyes: AME 0.22, ALE 0.18, PME 0.14, PLE 0.19, AME-AME 0.20, AME-ALE 0.23, PME-PME 0.39, PME-PLE 0.36, AME-PME 0.22, ALE-PLE 0.08, CH AME 0.18, CH ALE 0.22. Spination: Palp: 131, 101, 2221, 1011; Fe: I-II 220 III-IV 120; Pa: I-IV 000; Ti: I-II 0008, III 0006, IV 0004; Mt: I-III 0002, IV 1014. Measurements of palp and legs: Palp 3.2 (0.9, 0.6, 0.7, -, 1.0), I 8.9 (2.9, 1.5, 2.4, 1.5, 0.6), II 9.6 (3.2, 1.7, 2.6, 1.5, 0.6), III 8.4 (2.9, 1.4, 2.0, 1.5, 0.6), IV 8.7 (2.9, 1.3, 2.4, 1.4, 0.7). Leg formula: 2-1-4-3. Cheliceral furrow with three anterior and four posterior teeth, without denticles (Fig. 2 C).

Copulatory organs as in diagnosis. Epigynal field wider than long with one slit sensillum on each side of the epigynal field. Median septum medially about 1/2 of epigynal's width, with two humps on the posterior part. Posterior margin with two hooks, each pointing medially. Both sides of internal duct sustem separated. Fertilisation ducts arising posterior-laterally (Fig. 1 D-E and Fig. 3 D-E).

Colouration in ethanol: as in male, but dorsal opisthosoma yellowish-brown with wide dark spots (Fig. 4 C-D).

Diagnosis

Male of this species can be distinguished from the remaining species of the genus by its palps with embolic apophysis and embolus distally with an obvious crack (Fig. 1 A-C, Fig. 2 A and Fig. 3 A-B). Female resembles Thelcticopis folia Jäger & Praxaysombath, 2009 (see Jäger and Praxaysombath 2009: 48, figs. 106-113) in having a roundish median plate (Fig. 1 D and Fig. 3 D) and initial part of internal duct system narrow, leading to a chamber (Fig. 1 E and Fig. 3 E), but can be distinguished from the latter by the following characters: 1, median septum rounded in anterior part and two humps on the posterior part (not in T. folia ); 2, anterior part of internal duct system touching each other and distinctly narrower than posterior part (separated, the median part narrower than the other parts in T. folia ).

Etymology

The specific name is dedicated to Mr Pinmin Li for his kind instructions on our collection of huntsman spiders; name in the genitive case.

Distribution

Known only from the type locality (Fig. 5 ).

Figures

Figure 1. Thelcticopis pinmini sp. nov. A. Palp, left, ventral view; B. Palp, prolateral view; C. Palp, retrolateral view; D. Epigyne, ventral view; E. Vulva, dorsal view. Abbreviations: C-conductor, E-embolus, EA-embolic apophysis, FD-fertilisation duct, MS-median septum, S-spermatheca, SP-spermophore, TA-tegular apophysis. Red arrow: initial part of internal duct system. Scale bars: 0.5 mm.

Figure 2. Thelcticopis pinmini sp. nov. A. Palp, left, ventral view; B. Cheliceral dentition, male, ventral view; C. Cheliceral dentition, female, ventral view. Scale bars: 0.5 mm.

Figure 3. Thelcticopis pinmini sp. nov. A. Palp, left, prolateral view; B. Palp, left, retrolateral view; C. Left male palpal tibia, dorsal view; D. Epigyne, ventral view; E. Vulva, dorsal view. Abbreviations: dRTA-dorsal branch of RTA, mRTA-median branch of RTA, vRTA-ventral branch of RTA. Scale bars: 0.5 mm.

Figure 4. Habitus of Thelcticopis pinmini sp. nov. A. Male, ventral view; B. Male, dorsal view; C. Female, ventral view; D. Female, dorsal view. Scale bars: 2 mm.

Figure 5. Distribution of Thelcticopis pinmini sp. nov.