Sinopoda tuber, Grall & Jäger, 2020

Grall, Elena & Jäger, Peter, 2020, Forty-seven new species of Sinopoda from Asia with a considerable extension of the distribution range to the South and description of a new species group (Sparassidae: Heteropodinae), Zootaxa 4797 (1), pp. 1-101 : 74-75

Sinopoda tuber spec. nov.

Figs 49 a–d, 55 o–p, 59 k–l

Type material: Holotype: female (SD 1572), BRUNEI: Belait district: Badas Forest Reserve, approx. 10 km on the road that forks, about 32 km of Kuala Belait, to the south, forest kerangas (tropical heath forest), formed by Agathis , over and under bark, 10 m, 23 November 1988, B. Hauser leg. ( MHNG).

Paratype: female (SD 1647), MALAYSIA: Sarawak Province : Lambir Hill, N.P., 20 km South of Miri, N4°14’, E114°02’, 200 m, by Winkler-extraction, 17–18 August 2003, A. Schulz leg., field number AS/03-6 ( MHNG) .

Additional material examined: 1 egg sag with eighteen eggs with same data as for holotype ( MHNG) .

Etymology: This species name is derived from the Latin word “tuber” meaning “swelling” and refers to the swollen anterior part of the internal duct system; noun in apposition.

Diagnosis: Females of S. tuber spec. nov. are similar to S. matang spec. nov. ( Figs. 30 d–e) in having internal duct system with anterior median part bulging laterally and glandular appendages situated ventrally. They can be distinguished from the latter species by 1. AME smaller in diameter than ALE (ALE smaller in diameter than AME in S. matang spec. nov.), 2. lobal septum with anterior median indentation wide (anterior median indentation small in S. matang spec. nov.), 3. glandular appendages running parallel (diverging slightly posteriorly in S. matang spec. nov.) and 4. internal duct system fused along entire median line and posterior part bulging laterally (fused along two thirds of median line and posterior part running parallel in S. matang spec. nov.).

Description: Female (holotype): Total length 6.40; prosoma 2.70 long, 2.60 wide, anterior width of prosoma 1.60; opisthosoma 3.70 long, 2.40 wide. Eye measurements: AME 0.21; ALE 0.23; PME 0.12; PLE 0.26; AME– AME 0.10; AME–ALE 0.05; PME–PME 0.32; PME–PLE 0.27; AME–PME 0.19; ALE–PLE 0.22; clypeus AME 0.18; clypeus ALE 0.17. Leg formula: 2134. Measurements of palp and legs: palp: 3.95 (1.10, 0.70, 0.95, 1.20); I: 9.40 (2.50, 1.10, 2.60, 2.30, 0.90); II: 11.30 (3.20, 1.30, 3.20, 2.60, 1.00); III: 9.70 (2.80, 1.10, 2.60, 2.30, 0.90); IV:

9.30 (2.60, 1.00, 2.50, 2.30, 0.90). Spination: palp: 131, 101, 2121, 1014; legs: Fe I–III 323, IV 331; Pa I–IV 000; Ti I–IV 2026; Mt I–II 0004, III 2016, IV 3036. Cheliceral furrow with 3 anterior and 4 posterior teeth.

Colouration in ethanol: Prosoma brown with yellow anchor-like pattern. PLE with yellow spot beneath. Sternum yellowish-white with brown margin. Opisthosoma light brown with grey stripes. Ventral part medially with trapezoid grey spot, lateral part with brown spots. Chelicerae reddish-brown with brown stripes. Palps yellowishbrown; Fe distally brown. Legs yellow; Fe prolaterally and ventrally brown, Fe II-IV distally brown, Pa distally with brown band, Ti with two brown bands, band at Ti I lighter.

Copulatory organ as in diagnosis. Epigynal field wider than long, without anterior bands and slit sensilla. Epigynal pockets running from latero-posterior to medio-anterior. Lateral lobes fused. Lobal septum wide. Internal duct system longer than wide. Glandular appendages straight and extending posteriorly in posterior half of internal duct system. Fertilization ducts arising postero-laterally, curved, long and narrow.

Male: Unknown.

Variation: Female (paratype SD 1647): Total length 5.10; prosoma 2.30 long, 2.20 wide, anterior width of prosoma 1.40; opisthosoma 2.80 long, 1.70 wide. Measurements leg I: total length 8.70, Fe 2.60, Pa 1.00, Ti 2.30, Mt 2.00, Ta 0.80. Spination: legs: Ti I–II 1016.

Note: The width and the shape of the swelling of the anterior part of internal duct system varies from different perspectives from anterior view. For a better understanding, the holotype and the paratype are illustrated from a different angle.

Distribution: Brunei, Malaysia: Borneo.

Figures

FIGURES 30 a–e. Sinopoda matang spec. nov., holotype male and paratype female from Matang Reserve. a–c left male palp (a prolateral, b ventral, c retrolateral); d Epigyne, ventral; e Vulva, dorsal. GA—glandular appendage.

FIGURES 49 a–b. Sinopoda tuber spec. nov., holotype female and paratype female from Kuala Belait, copulatory organ. a–b Holotyp (a Epigyne, ventral; b Vulva, dorsal); c–d Paratyp (c Epigyne, ventral; d Vulva, dorsal).