Heteropoda pilata, Korai & Jäger, 2024

Korai, Shakal Khan & Jäger, Peter, 2024, Five new species of Heteropoda Latreille, 1804 spiders (Araneae: Sparassidae) from Southeast Asia, Zootaxa 5481 (2), pp. 241-259 : 252-254

Heteropoda pilata spec. nov.

Figs 8A–E , 11

Type material. Holotype female: THAILAND: Mae Hong Son Province: Amphoe Mae Sariang District, Tambon Mae Ho City, CHang Wat 58110, 18°05′53″N, 98°01′57″E, 935 m, 9 July 2014, Z.S. ZHang leg. ( CBEE).

Etymology. The specific name is derived from the Latin adjective, pilatus, - a, - um, meaning thick, referring to the first windings of internal duct system in dorsal view.

Diagnosis. This new species can be distinguished from all other Heteropoda species by the unique combination of epigynal field as long as wide, short anterior bands attached to the field, additional median lobes arising from anterior half of the lateral lobes, and glandular pores situated in the centre of first windings. This species is most similar to Heteropoda languida Simon, 1887 ( Jäger 2014: figs 48–50), but can be distinguished from the latter by the following characters: 1. Visible part of median septum short (median septum long and freely visible in H. languida ); 2. Lateral lobes distinctly touching each other (clearly separated in H. languida ); 3. Anterior part of internal duct system almost covering the posterior part (partly covered in H. languida ); 4. Glandular pores postero-laterad (posteriad in H. languida ) ( Figs 8A–C ).

Description. Male: Unknown.

Female (holotype): Measurements: BL 12.3; PL 5.4 , PW 5.0; AW 0.3; OL 10.9, OW 3.5. Eyes : AME 0.24, ALE 0.33, PME 0.22, PLE 0.36, AME–AME 0.24, AME–ALE 0.13, PME–PME 0.37, PME–PLE 0.56, AME–PME 0.40, ALE–PLE 0.45, CH AME 0.23, CH ALE 0.31. Spination : Palp 102, 000, 2311; Fe I –II 211, III 202, IV 121; Pa I –IV 210; Ti I–II 2202, III–IV 2321; Mt I –IV 1110. Measurements of palp and legs: Palp 6.1 (1.8, 0.9, 1.8,–, 1.5), I 22.0 (6.3, 1.7, 6.9, 5.5, 1.4), II 24.0 (7.3, 2.3, 8.0, 4.8, 1.5), III 19.8 (6.2, 1.9, 6.2, 3.9, 1.5), IV 20.9 (6.8, 2.0, 6.4, 4.5, 1.0). Leg formula: II–I–IV–III. Cheliceral furrow with 3 promarginal, 4 retromarginal teeth and ca. 35 denticles.

Copulatory organ as in diagnosis. Epigynal field with one slit sensillum on each side. Epigynal field with shallow pits postero-laterally. Additional median lobes arising from anterior half of the lateral lobes, being in contact with each other medially, not the posterior section of lateral lobes. Initial part of first windings narrow, parallel and separated from each other, the rest broad and running circular. Ducts after glandular pores running in large S-shaped windings in anterior half. Fertilization ducts located posteriorly ( Figs 8A–C ).

Colouration in ethanol. Dorsal shield of prosoma yellowish-brown to reddish-brown, with very unique pattern of distinct patches covered by setae. Chelicerae deep reddish-brown. Sternum, labium and gnathocoxae deep yellowish-brown. Opisthosoma dorsally yellowish-brown, with two pairs of dark patches around muscle sigilla and darker V-shaped pattern in posterior half; ventrally pale-yellowish to yellowish-brown ( Figs 8D–E ).

Distribution. Thailand (Mae Hong Son Province) ( Fig. 11 )

Figures

FIGURES 8A–E. Heteropoda pilata spec. nov., holotype female from Thailand, Tambon Mae Ho, Chang Wat 58110. A–C Copulatory organ (A vulva, dorsal; B epigyne, ventral; C schematic course of internal duct system, dorsal); D–E Habitus (D dorsal, E ventral). Abbreviations: AB—anterior bands; CO—copulatory opening; FD—fertilization duct; FW—first winding; GP—glandular pores; LL—lateral lobes; MS—median septum. Scale bars: A–C 0.5 mm; D–E 2.5 mm.

FIGURE 11. Locality records of the examined Heteropoda material.