Pseudopoda byssina Zhang, Jager &amp; Liu 2023, spec. nov.
Creators: name: Zhang, He
name: Zhu, Yang
name: Zhong, Yang
name: Jäger, Peter
name: Liu, Jie
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Sparassidae
Pseudopoda
Pseudopoda byssina

description: <b> <i>Pseudopoda byssina</i> Zhang, Jäger &amp; Liu, spec. nov.</b> Figs 35–37, Map 2 <b>Type material.</b> <b> THAILAND, <i>Chiang Mai Province</i>: Holotype</b> male from Doi Phahom Pok [20.04°N, 99.14°E], 1000 m, 15 December 2002, P. Dankittipakul leg. (MHNG, MHNG0019). <b>Paratypes:</b> 2 females, with same data as for holotype (MHNG, MHNG0020 – MHNG0021). <b>Etymology</b>. The specific name is derived from the Latin adjective <i>byssinus</i>, - <i>a</i>, - <i>um</i>, meaning “filamentous”, referring to the thin and long E; adjective. <b>Diagnosis.</b> The male of <i>P. byssina</i> Zhang, Jäger &amp; Liu, spec. nov. is similar to that of <i>P. dao</i> 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 <i>P. dao</i>). The female of <i>P. byssina</i> Zhang, Jäger &amp; Liu, spec. nov. similar to that of <i>P. parvipunctata</i> 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 <i>P. parvipunctata</i>). MALE (MHNG0019): <b>Measurements:</b> Medium sized. Body length 11.0, DS length 5.3, width 4.6, OS length 5.7, width 3.2. <b>Eyes:</b> 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. <b>Spination:</b> 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. <b>Measurements of palps and legs:</b> 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. <b>Palp</b> (Figs 35A–C): 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. <b>Colouration</b> (Figs 37A–B): 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): <b>Measurements:</b> Medium sized. Body length 12.8–13.1, DS length 5.7, width 5.1, OS length 7.4, width 5.2. <b>Eyes:</b> 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. <b>Spination:</b> 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. <b>Measurements of palps and legs:</b> 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). <b>Leg formula:</b> II-I-IV-III. Cheliceral furrow with ca. 25 denticles. <b>Epigyne</b> (Figs 36A–C): 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. <b>Colouration</b> (Figs 37C–D): As in male. <b>Distribution.</b> Thailand (Chiang Mai Province).
description: Published as part of <i>Zhang, He, Zhu, Yang, Zhong, Yang, Jäger, Peter &amp; Liu, Jie, 2023, A taxonomic revision of the spider genus Pseudopoda Jäger, 2000 (Araneae: Sparassidae) from East, South and Southeast Asia, pp. 1-304 in Megataxa 9 (1)</i> on page 50, DOI: 10.11646/megataxa.9.1.1, http://zenodo.org/record/7658066