Anahita menglun Yao & Li, 2022

Lu, Ying, Chu, Chang, Yao, Zhiyuan & Li, Shuqiang, 2022, Four new species of ctenid spiders (Araneae, Ctenidae) from Southeast Asia, with the first description of the female of Sinoctenus zhui Marusik, Zhang & Omelko, 2012, Biodiversity Data Journal 10, pp. 91350-91350 : 91350

Anahita menglun Yao & Li sp. n.

Materials

Type status: Holotype. Occurrence: recordedBy: Guo Zheng ; individualCount: 1; sex: male; lifeStage: adult; Taxon : order: Araneae ; family: Ctenidae ; genus: Anahita ; Location : country: China; stateProvince: Yunnan; municipality: Xishuangbanna ; locality: Mengla County ; verbatimLocality: Menglun Town , Xishuangbanna Tropical Botanical Garden , Paramichelia baillonii plantation (about 20 yr.); verbatimElevation: 608 ± 11 m a.s.l.; verbatimLatitude: 21°54.200'N; verbatimLongitude: 101°16.923'E; Event: samplingProtocol: Collected by hand in leaf litter; year: 2007; month: 4; day: 19-26; Record Level: institutionCode: IZCAS-Ar 43472

Description

Male (IZCAS-Ar 43472): PL 2.1, PW 1.7, AW 0.8, OL 2.2, OW 1.3. Eye diameters and interdistances: AME 0.10, ALE 0.09, PME 0.13, PLE 0.14, AME-AME 0.12, AME-ALE 0.13, PME-PME 0.15, PME-PLE 0.18, AME-PME 0.09, ALE-PLE 0.12, clypeus AME 0.05, clypeus ALE 0.23. Palp and leg measurements: palp 3.0 (0.7, 0.5, 0.6, -, 1.2), I 11.6 (3.0, 1.0, 3.4, 2.9, 1.3), II 9.5 (2.5, 0.9, 2.6, 2.4, 1.1), III 8.6 (2.3, 0.8, 2.2, 2.3, 1.0), IV 13.0 (3.4, 0.9, 3.3, 4.0, 1.4). Leg formula 1423. Spination of palp and legs: palp 130, 110, 1110; femora I p021, d111, r112, II-III p112, d111, r112, IV p112, d111, r111; patellae 000; tibiae I-II v222222, III p11, d11, r11, v222; IV p11, r11, v222; metatarsi I-II v222, III p012, d010, r012, v222, IV p112, r112, v1112. Chelicerae with 3 promarginal, 4 + 1 retromarginal teeth and with elongated narrow patch of about 4 denticles along entire cheliceral furrow. Retromargin of chelicerae close to fang base with one bristle. Leg claws I with 5 secondary teeth and II-IV with 6 secondary teeth. Position of tarsal organ: IV 1.15.

Palp (Fig. 2 a-c). Palpal tibia without RTA and intrasegmental sclerite, distally with retrolateral stout spine. Cymbium elongate oval, retrolaterally with slightly stronger bulge than prolaterally. Embolus arising at 5- o’clock-position, long and filiform, running around tegulum, its tip situated distally in 12 to 12.30- o’clock-position. Palp without conductor. Tegular apophysis arising from central tegulum, distally hooked.

Colour (Fig. 9 a). Yellowish-brown partly with darker patterns. Dorsal prosoma with two broad lateral bands and marked fovea. Submarginally with narrow band, marginally with thin black line. Sternum and ventral coxae yellowish with darker marks, labium and gnathocoxae yellowish without marks. Chelicerae with two distinct longitudinal bands. Legs yellowish-brown with spots on ventral femora and dark parts mostly on leg IV. Dorsal opisthosoma with distinct light median band. Ventral opisthosoma spotted. Spinnerets yellowish, anterior and posterior spinnerets laterally black.

Female

Unknown.

Diagnosis

Small Ctenidae (total length male 4.3). The new species can be distinguished from all known congeners by the embolus arising at 5- o’clock-position (Fig. 2 b), by the tegular apophysis with hooked tip (Fig. 2 a and c) and by the palp having no conductor (Fig. 2 a and c).

Etymology

The specific name refers to the type locality and is a noun in apposition.

Distribution

China (Yunnan, type locality, Fig. 1 ).

Figures

Figure 1. New distribution records of ctenid species from China and Vietnam. 1. Anahita menglun sp. n. 2. Bowie haiphong sp. n. 3. B. mengla sp. n. 4. B. zhengi sp. n. 5. Sinoctenus zhui.

Figure 2. Anahita menglun sp. n., holotype male. a Palp, prolateral view; b Palp, ventral view; c Palp, retrolateral view. DS = distal retrolateral spine, E = embolus, TA = tegular apophysis. Scale bar: 0.20 mm (a - c).