Pseudopoda byssina Zhang, Jäger & Liu, 2023

Zhang, He, Zhu, Yang, Zhong, Yang, Jäger, Peter & Liu, Jie, 2023, A taxonomic revision of the spider genus Pseudopoda Jäger, 2000 (Araneae: Sparassidae) from East, South and Southeast Asia, Megataxa 9 (1), pp. 1-304 : 50

publication ID

https://doi.org/ 10.11646/megataxa.9.1.1

DOI

https://doi.org/10.5281/zenodo.7658112

persistent identifier

https://treatment.plazi.org/id/5C13750E-F95E-DA7C-5CA9-FC3976334B83

treatment provided by

Plazi

scientific name

Pseudopoda byssina Zhang, Jäger & Liu
status

sp. nov.

Pseudopoda byssina Zhang, Jäger & Liu , spec. nov. Figs 35–37 View FIGURE 35 View FIGURE 36 View FIGURE 37 , Map 2

Type material. THAILAND, Chiang Mai Province: Holotype male from Doi Phahom Pok [20.04°N, 99.14°E], 1000 m, 15 December 2002, P. Dankittipakul leg. ( MHNG, MHNG0019 View Materials ) GoogleMaps . Paratypes: 2 females, with same data as for holotype ( MHNG, MHNG0020 View Materials MHNG0021 View Materials ) GoogleMaps .

Etymology. The specific name is derived from the Latin adjective byssinus, - a, - um, meaning “filamentous”, referring to the thin and long E; adjective.

Diagnosis. The male of P. byssina Zhang, Jäger & Liu , spec. nov. is similar to that of P. dao Jäger, 2001 (Jäger 2001) by having an extremely elongated E, a strong retrolateral cymbial bulge and a proximally arising RTA sticking out at a right angle from palpal tibia, but can be distinguished by: 1) E with a projection at its basal part; 2) T elongated resulting in a straight part of the spermophor in longitudinal axis; (E without such projection, T suboval with spermophor rounded in P. dao ). The female of P. byssina Zhang, Jäger & Liu , spec. nov. similar to that of P. parvipunctata Jäger, 2001 (Jäger 2001) in having a very similar course of IDS, but can be easily distinguished by the LL with prominent postero-laterad extensions, unseen in the entire genus, and LL not touching each other medially (LL rounded and touching each other in P. parvipunctata ).

MALE (MHNG0019): Measurements: Medium sized. Body length 11.0, DS length 5.3, width 4.6, OS length 5.7, width 3.2. Eyes: AME 0.21, ALE 0.32, PME 0.25, PLE 0.36, AME–AME 0.21, AME–ALE 0.13, PME–PME 0.27, PME–PLE 0.46, AME–PME 0.37, ALE–PLE 0.32, CH AME 0.47, CH ALE 0.40. Spination: Pp 131, 101, 2111; Fe I–II 323, III 322, IV 321; Pa I–IV 101; Ti I–II 2226, III–IV 2126; Mt I–III 2024, IV 3036. Measurements of palps and legs: Pp 8.8 (2.5, 1.2, 1.5, –, 3.6); I 21.5 (6.1, 2.1, 5.9, 5.5, 1.9); II 24.5 (6.6, 2.7, 7.4, 6.1, 2.1); III 17.7 (5.3, 1.7, 4.9, 4.4, 1.4); IV 20.8 (6.3, 1.4, 5.3, 5.8, 2.0). Leg formula: II-I-IV-III. Cheliceral furrow with ca. 27 denticles.

Palp ( Figs 35A–C View FIGURE 35 ): As in diagnosis. C arising from T at 12:00 o’clock position, broadly fanned apically. E arising from T at 6:30 o’clock position, long, running in three loops, tip situated close to conductor. Spermophor S-shaped. Both, vRTA and dRTA flattened and blunt in ventral view, RTA concave apically in retrolateral view.

Colouration ( Figs 37A–B View FIGURE 37 ): DS reddish brown with dark spots. Fovea distinctly marked with elongated “X”, striae marked with rows of dots. OS dorsally reddishbrown interspersed with yellow dots, becoming darker posteriorly, until a transverse yellow patch in posterior part. OS ventrally with reddish brown marks, irregularly arranged, becoming more denser in front of spinnerets.

FEMALE (MHNG0020): Measurements: Medium sized. Body length 12.8–13.1, DS length 5.7, width 5.1, OS length 7.4, width 5.2. Eyes: AME 0.21, ALE 0.35, PME 0.26, PLE 0.33, AME–AME 0.21, AME–ALE 0.13, PME–PME 0.28, PME–PLE 0.47, AME–PME 0.41, ALE–PLE 0.32, CH AME 0.51, CH ALE 0.46. Spination: Pp 131, 101, 2121, 1014; Fe I–II 323, III 322, IV 321; Pa I–II 001, III–IV 101; Ti I 1016, II–IV 2026; Mt I–II 1014, III 3024, IV 3036. Measurements of palps and legs: Pp 7.1 (1.9, 1.0, 1.6, –, 2.6); I 18.0 (5.0, 2.3, 4.8, 4.3, 1.6); II 21.4 (5.8, 2.6, 6.2, 5.0, 1.8); III 15.4 (4.7, 1.9, 3.9, 3.5, 1.4); IV 17.2 (5.5, 1.4, 4.1, 4.5, 1.7). Leg formula: II-I-IV-III. Cheliceral furrow with ca. 25 denticles.

Epigyne ( Figs 36A–C View FIGURE 36 ): As in diagnosis. EF wider than long, with tiny AB situated in anterior concavity. Anterior margins of LL forming an open V-shaped structure. LL forming wide cones, these bluntly tapering apically. Parts of IDS seen laterally from FW in dorsal view, other parts are hidden by FW and LL.

Colouration ( Figs 37C–D View FIGURE 37 ): As in male.

Distribution. Thailand (Chiang Mai Province).

MHNG

Museum d'Histoire Naturelle

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Sparassidae

Genus

Pseudopoda

Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF