Ctenus lishuqiang, Jager, 2012

Jäger, Peter, 2012, Asian species of the genera Anahita Karsch 1879, Ctenus Walckenaer 1805 and Amauropelma Raven, Stumkat & Gray 2001 (Arachnida: Araneae: Ctenidae), Zootaxa 3429 (1), pp. 1-63 : 34-35

publication ID

http://doi.org/ 10.11646/zootaxa.3429.1.1

persistent identifier

http://treatment.plazi.org/id/C8488786-113A-FFBF-FF71-FA42543EFC7B

treatment provided by

Felipe

scientific name

Ctenus lishuqiang
status

spec. nov.

Ctenus lishuqiang   spec. nov.

Figs 39, 138–145

Type material. Holotype female ( SMF), China, Sichuan Province, Baoxing County, Tuanjie village , N 30°25.126', E 102°44.38', 1111 m altitude, secondary forest, leaf litter, by hand, by day, P. Jäger leg. 28.VI.2004. GoogleMaps  

Etymology. This species is named for Shuqiang Li from Beijing, honouring his enormous contributions to arachnological knowledge in China; name in apposition.

Diagnosis. Medium-sized Ctenidae   (total length female 13.0). Distinguished from other Ctenus spp.   by the acute epigynal teeth and by the two bulging areas of the epigynal plate close to the teeth ( Figs 138–139).

Description. Female (holotype). PL 6.3, PW 5.1, AW 3.5, OL 6.7, OW 5.0. Eye diameters and interdistances: AME 0.31, ALE 0.26, PME 0.42, PLE 0.38, AME–AME 0.20, AME–ALE 0.41, PME–PME 0.21, PME–PLE

0.50, AME–PME 0.13, ALE–PLE 0.15, clypeus AME 0.16, clypeus ALE 0.55. Palp and leg measurements: palp 6.4 (2.1, 1.2, 1.5, -, 1.6), I 14.4 (4.1, 2.3, 3.8, 3.0, 1.2), II 13.6 (4.0, 2.2, 3.3, 2.9, 1.2), III 12.4 (3.5, 2.0, 2.7, 2.9, 1.3), IV 16.6 (4.4, 1.9, 3.9, 4.7, 1.7). Leg formula 4123. Spination of palp and legs: palp 131, 100, 1211, 1012; femora I p021, d111, r211, II p112(3), d111, r 111, III p112, d111, r 112, IV p112, d111, r001; patellae I–II 000, III– IV 101; tibiae I–II v22222, III–IV p11, d111, r11, v222; metatarsi I–II v222, III p112, d010, r112, v222, IV p112, d010, r112, v2122. Chelicerae with 3 promarginal, 4 retromarginal teeth, and with c. 14 denticles most of them in patch close to promarginal teeth. Retromargin of chelicerae close to fang base with 8–9 thin bristles. Leg claw I with 1(2), leg claw II with 2, leg claws III–IV with 3 secondary teeth. Position of tarsal organ: I 0.80, II 0.79, III 0.62, IV 0.60.

Copulatory organ as in diagnosis ( Figs 138–141). Epigynal field wider than long, with two anterio-lateral patches fused with field, with one pair of slit sense organs anterio-laterally. Median plate anteriorly narrow, widening gradually and not narrowing posteriorly (as for instance in C. theodorianum   spec. nov.); lateral teeth arising at anterior part, pointing posterio-medially. Internal duct system with lateral folds diverging posteriorly. Spermathecae directed towards each other, widened medially, separated by less of their diameter, internally with a relatively large transverse oval chamber between spermathecae and fertilisation ducts, the latter acuminate and pointing medially.

Colour ( Figs 142–143). Reddish-brown with slightly darker pattern. Dorsal shield of prosoma with characteristic slightly lighter median band, widened behind eyes, constricted behind distinctly marked fovea. Sternum and ventral coxae dark yellowish-brown, partly with indistinct diffused black colour. Labium and gnathocoxae dark reddish-brown with lighter distal lips. Chelicerae dark reddish-brown. Palps and legs reddishbrown with only indistinct markings. Dorsal opisthosoma dark brown with anterior margin and heart region with lighter area. Ventral opisthosoma dark brown with two rows of lighter spots, distal spinnerets light. For colour of live holotype see Figs 144–145.

Male. Unknown.

Distribution. Known only from the type locality ( Fig. 39: 6).

SMF

Forschungsinstitut und Natur-Museum Senckenberg

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Ctenidae

Genus

Ctenus