Sinopoda inthanon, 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 : 28-31

Sinopoda inthanon spec. nov.

Figs 17 a–e, 58 g–j

Type material: Holotype: male, THAILAND: Chiang Mai Province: Doi Inthanon, ATOL Expedition 2003, field number MF7AFN1 ( MACN).

Paratype: 1 female (SD 1650), with same data as for holotype, except: field number MF6grN ( MACN) .

Additional material examined (2 males): 1 male with same data as for holotype except: field number JT66rN ( MACN) . 1 male (SD 1649) with same data as for holotype, except: near intersect. Road to Mae Chaem and checkpoint, N18°31’33.2’’, E98°29’57.7’’, ca. 1800 m, wet primary forest, 03 October 2003 ( SMF) .

Etymology: The species name is derived from the type locality; term in apposition.

Diagnosis: Males of Sinopoda inthanon spec. nov. are similar to those of S. longicymbialis spec. nov. ( Figs. 27 a–c) in having an elongated cymbium, a long and curved embolic apophysis and an embolus tip with a small spike. They can be distinguished from the latter species by 1. smaller body size reaching 11.60 (17.50 in S. longicymbialis spec. nov.), 2. embolus with distal part nearly twice the size than proximal part (distal part nearly four times the size than distal part in S. longicymbialis spec. nov.), 3. embolic apophysis longer than embolus in ventral view (nearly as long as embolus in S. longicymbialis spec. nov.), 4. spermophore curved (straight in S. longicymbialis spec. nov.) and 5. RTA with tip of dRTA rounded in retrolateral view and proximal part of vRTA wider than proximal part of dRTA in retrolateral view (tip of dRTA tapering in retrolateral view and proximal part of vRTA nearly as wide as proximal part of dRTA in retrolateral view in S. longicymbialis spec. nov.).

Females of S. inthanon spec. nov. are similar to those of S. aureola Kim et al., 2014 in having the lobal septum with a distinctly continuous medio-longitudinal suture and median indentation on anterior part, but can be distinguished by 1. colouration with prosoma reddish-brown and opisthosoma dark-brown with yellow spot anteriorly (prosoma brown and opisthosoma reddish-brown with dark-brown dots in S. aureola ), 2. internal duct system with anterior part wider than posterior part (posterior part wider than anterior part in S. aureola ), 3. glandular appendages curved, distal part not spherical and extending posteriorly in posterior half of internal duct system (nearly straight, distal part spherical and extending only in anterior half of internal duct system in S. aureola ) and 4. fertilization ducts slender (wide in S. aureola ).

Description: Male (holotype): Total length 11.60; prosoma 5.80 long, 4.90 wide, anterior width of prosoma 2.90; opisthosoma 5.80 long, 3.30 wide. Eye measurements: AME 0.27; ALE 0.45; PME 0.33; PLE 0.44; AME– AME 0.18; AME–ALE 0.06; PME–PME 0.26; PME–PLE 0.52; AME–PME 0.40; ALE–PLE 0.41; clypeus AME 0.47; clypeus ALE 0.41. Leg formula: 2143. Measurements of palp and legs: palp: 9.40 (3.20, 1.40, 1.90, 2.90); I: 31.20 (8.30, 3.20, 8.90, 8.20, 2.60); II: 33.90 (9.30, 3.30, 9.80, 8.70, 2.80); III: 27.50 (7.90, 2.90, 7.70, 6.80, 2.20); IV: 30.10 (8.30, 2.60, 8.30, 8.30, 2.60). Spination: palp: 131, 101, 2111, 2100; legs: Fe I–III 323, IV 331; Pa I–III 001, IV 000; Ti I–IV 2026; Mt I–II 0004, III 2026, IV 3036. Cheliceral furrow with 3 anterior and 4 posterior teeth.

Colouration in ethanol: Prosoma yellowish-brown, lateral and posterior margin brown, posteriorly with yellow transversal stripe, medially yellow. Sternum yellow with light brown margin. Opisthosoma brown with yellow cross-like pattern anteriorly, ventral part laterally brown, medially greyish-brown, anteriorly yellowish-brown. Chelicerae reddish-brown. Palps light brown. Legs yellowish-brown; Fe with indistinct brown spots.

Palp as in diagnosis. Embolic apophysis with distal part wider than proximal part. Embolus slightly curved. Conductor curved, arising from 1-o’clock-position and distal part bent ventrally in retrolateral view. Tegulum proximally narrow, not covering embolus base. dRTA longer than vRTA, narrow and curved in retrolateral view. vRTA wider than dRTA, rounded, distal part with short tip.

Description: Female (paratype): Total length 19.50; prosoma 9.00 long, 7.60 wide, anterior width of prosoma 4.50; opisthosoma 10.50 long, 6.50 wide. Eye measurements: AME 0.37; ALE 0.60; PME 0.45; PLE 0.60; AME– AME 0.38; AME–ALE 0.07; PME–PME 0.43; PME–PLE 0.75; AME–PME 0.58; ALE–PLE 0.53; clypeus AME 0.81; clypeus ALE 0.69. Leg formula: 2413. Measurements of palp and legs: palp: 12.30 (3.60, 1.90, 3.00, 3.80); I: 34.40 (9.60, 4.40, 9.80, 8.10, 2.50); II: 37.60 (11.00, 4.50, 10.50, 9.00, 2.60); III: 32.00 (9.50, 4.00, 8.60, 7.50, 2.40); IV: 34.70 (10.10, 3.50, 9.20, 9.20, 2.70). Spination: palp: 131, 101, 2121, 1014; legs: Fe I–III 323, IV 331; Pa I–III 001, IV 000; Ti I–IV 2026; Mt I–II 1014, III 2014, IV 3036. Cheliceral furrow anterior 3, posterior 4.

Colouration in ethanol: Prosoma reddish-brown, posterior part with slightly curved transversal brown stripe. Sternum reddish-brown, laterally brown. Opisthosoma brown, anterior part with yellow longitudinal stripe, ventral part medially reddish-brown, laterally brown. Chelicerae dark reddish-brown. Palps and legs reddish-brown.

Copulatory organ as in diagnosis. Epigynal field wider than long with two long anterior bands, right band discontinuous, and four slit sensilla. Epigynal pockets running from latero-posterior to medio-anterior. Lateral lobes partly touching, posterior part with median indentation. Internal duct system nearly as long as wide. Spermathecae partially fused along median line. Anterior part of spermathecae appearing as small separate swelling. Posterior part bulging laterally. Glandular appendages long and curved. Fertilization ducts situated postero-laterally, curved.

Variation: Male (n=2): Total length 12.80–14.70; prosoma 6.50–7.10 long, 5.60–5.90 wide, anterior width of prosoma 3.10–3.50; opisthosoma 6.30–7.60 long, 3.90–4.20 wide. Measurements leg I: total length 33.70–35.90, Fe 9.00–9.50, Pa 3.40–3.70, Ti 9.50–10.10, Mt 9.00–9.60, Ta 2.80–3.00. Spination: palp: Fe 131/141; legs: Mt I–II 0004.

Distribution: Known only from the type locality.

Figures

FIGURES 17 a–e. Sinopoda inthanon spec. nov., holotype male and paratype female from Doi Inthanon. a–c left male palp (a prolateral, b ventral, c retrolateral); d Epigyne, ventral; e Vulva, dorsal.

FIGURES 27 a–e. Sinopoda longicymbialis spec. nov., holotype male and paratype female from Tham Klaeb Yai. a–c left male palp (a prolateral, b ventral, c retrolateral); d Epigyne, ventral; e Vulva, dorsal.