Bowie mengla 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

Bowie mengla Yao & Li sp. n.

Materials

Type status: Holotype. Occurrence: recordedBy: Guo Zheng ; individualCount: 1; sex: male; lifeStage: adult; Taxon : order: Araneae ; family: Ctenidae ; genus: Bowie ; 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 43478 Type status: Paratype. Occurrence: recordedBy: Guo Zheng ; individualCount: 1; sex: male; lifeStage: adult; Taxon : order: Araneae ; family: Ctenidae ; genus: Bowie ; Location : country: China; stateProvince: Yunnan; municipality: Xishuangbanna ; locality: Mengla County ; verbatimLocality: Menglun Town , Menglun Nature Reserve , Secondary tropical montane evergreen broad-leaved forest; verbatimElevation: 880 ± 15 m a.s.l.; verbatimLatitude: 21°54.767'N; verbatimLongitude: 101°11.431'E; Event: samplingProtocol: Collected by hand in leaf litter; year: 2007; month: 5; day: 4-11; Record Level: institutionCode: IZCAS-Ar 43479

Description

Male (IZCAS-Ar 43478): PL 5.5, PW 4.3, AW 2.2, OL 4.3, OW 2.9. Eye diameters and interdistances: AME 0.22, ALE 0.16, PME 0.28, PLE 0.24, AME-AME 0.14, AME-ALE 0.31, PME-PME 0.24, PME-PLE 0.30, AME-PME 0.13, ALE-PLE 0.20, clypeus AME 0.19, clypeus ALE 0.46. Palp and leg measurements: palp 5.5 (1.9, 0.9, 1.0, -, 1.7), I 19.0 (5.1, 2.3, 4.8, 4.9, 1.9), II 17.0 (4.7, 2.3, 4.2, 4.2, 1.6), III 13.4 (3.8, 1.9, 2.5, 3.7, 1.5), IV 20.2 (5.3, 2.0, 4.5, 6.6, 1.8). Leg formula 4123. Spination of palp and legs: palp 131, 100, 1010; femora I p121, d111, r112, II-III p112, d111, r112, IV p112, d111, r012; patellae 101; tibiae I p100, d111, r110, v22222, II p110, d111, r110, v22222, III-IV p11, d111, r11, v222; metatarsi I-II p111, r111, v222, III p112, r112, v222, IV p112, d010, r112, v2222. Chelicerae with 3 promarginal, 4 retromarginal teeth and with elongated patch of 6 tiny denticles along entire cheliceral furrow. Retromargin of chelicerae close to fang base with 4 bristles. Only tarsi with sparse scopula. Right leg claws I and III with 4, II with 3 and IV with 5 secondary teeth. Position of tarsal organ: I 1.62, II 1.32, III 0.92, IV 1.30.

Palp (Fig. 4 a-c). Palpal tibia with entirely sclerotised and pointed RTA. Cymbium tip slightly conical, with pointed retro-proximal cymbial outgrowth and the edge of outgrowth sclerotised. Embolus arising at 8- o’clock-position, short, its tip situated in distal half of tegulum. Conductor arising at 12- o’clock-position subdistally. Tegular apophysis arising subcentrally from tegulum, slightly excavated on dorsal side.

Colour (Fig. 9 c). Reddish-brown to yellowish with dark patterns. Dorsal prosoma with characteristic slightly lighter median band, widened behind eyes and with some white hairs, distinctly marked fovea and indistinct radial markings. Sternum, ventral coxae and gnathocoxae yellowish, labium yellowish with darker patterns. Chelicerae reddish-brown with longitudinal lines in proximal half and with darker distal half. Leg reddish brown-yellowish. Dorsal opisthosoma yellowish with black patches, most fused into two parallel rows. Lateral opisthosoma yellowish with dark spots. Ventral opisthosoma black with white patches; epiandrium and muscle sigilla light. Anterior lateral spinnerets dark, posterior lateral and median spinnerets and anal tubercle light.

Female

Unknown.

Variation: Paratype male (IZCAS-Ar 43479): PL 5.2, OL 4.0.

Diagnosis

Small Ctenidae (total length male 9.2-9.8). The new species is assigned to the robustus species-group because of the following characteristics: stout TA; simple stout embolus with broad base and short apical part; presence of retro-proximal cymbial outgrowth; RTA arising medially to subdistally from palpal tibia; femur III with ventral hump and metatarsus III subproximally with strong cone-shaped ventral hump bearing a spine. Additionally, it resembles B. fascination Jäger, 2022 (see Jäger 2022: figs. 230-233 and 263-264) by having similar tegular apophysis and embolus (Fig. 8 b), but can be distinguished by the cymbium with pointed retro-proximal outgrowth (Fig. 4 b; cymbium with blunt retro-proximal outgrowth in B. fascination ) and by the RTA thin, pointed and without the tiny tooth at the RTA apex (Fig. 4 b and c; RTA relatively broad and with tiny tooth at RTA apex in B. fascination ).

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 4. Bowie mengla sp. n., holotype male. a Palp, prolateral view, arrow points at excavation; b Palp, ventral view; c Palp, retrolateral view. C = conductor, E = embolus, RPO = retro-proximal cymbial outgrowth, RTA = retrolateral tibial apophysis, TA = tegular apophysis. Scale bar: 0.20 mm (a - c).