Sinopoda chiangmaiensis, 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 : 78-80

Sinopoda chiangmaiensis spec. nov.

Figs 52 a–g, 56 d–g

Type material: Holotype: male, THAILAND: Chiang Mai Province: 15 km S of Si Dong Yen, Tham Pha Daeng , N19°30’9.37’’, E99°8’48.47’’, 700 m, cave, by hand, 07 June 2014, P. Jäger & E. Grall leg. ( SMF).

Paratypes: 3 males (SD 1292) and 9 females (SD 1298) with same data as for holotype ( SMF) .

Additional material examined: 4 subadult males, 9 juveniles, 2 egg-sacs with same data as for holotype ( SMF). THAILAND: Chiang Mai Province : 1 female ( PJ 897 , SD 1474), Chiang Dao, Tham Farangset, 04 July 1985, B. Lebreton leg., field number M01-71 ( RMNH) .

Etymology: The species name is derived from the type locality; adjective.

Diagnosis: Males of S. chiangmaiensis spec. nov. can be distinguished from other Sinopoda species by the combination of the following characters: 1. tip of embolic apophysis only visible in prolateral view, 2. RTA shovelshaped in retrolateral view, vRTA short, wide and serrated in ventral view, dRTA long and slightly curved, 3. slender spermophore in ventral view and 4. tegulum anteriorly with small swelling.

Females of S. chiangmaiensis spec. nov. are similar to those of S. lot spec. nov. ( Figs. 53 a–b) and S. phathai spec. nov. ( Fig. 54 a–b) in the characters mentioned in the diagnosis of the species group. They can be distinguished from S. lot spec. nov. by 1. epigynal field wider than long (longer than wide in S. lot spec. nov.), 2. lateral margin of epigynal pockets extending anteriorly of lobal septum (not extending anteriorly of lobal septum in S. lot spec. nov.), 3. distance between anterior ends of epigynal pockets nearly half the width of epigyne (nearly width of epigyne in S. lot spec. nov.), 4. sclerotised bulges with anterior part straight (anterior part rounded in S. lot spec. nov.), 5. spermathecae only fused at anterior part (posterior part of spermathecae partially fused in S. lot spec. nov.) and 6. glandular appendages straight and distal part bent laterally (curved in S. lot spec. nov.); from S. phathai spec. nov. by 1. sclerotised bulges situated only in anterior half of epigyne and anterior part straight (situated in posterior half of epigyne and anterior part curved in S. phathai spec. nov.), 2. distance between anterior ends of epigynal pockets nearly half the width of epigyne (nearly two-third of epigyne width in S. phathai spec. nov.), 3. spermathecae with anterior part short and median part without bulges (anterior part semicircular and median part with small bulges in S. phathai spec. nov.) and 4. glandular appendages with distal part bent laterally (distal part not bent laterally in S. phathai spec. nov.).

Description: Male (holotype): Total length 12.80; prosoma 6.50 long, 5.70 wide, anterior width of prosoma 3.20; opisthosoma 6.30 long, 3.80 wide. Eye measurements: AME 0.30; ALE 0.45; PME 0.30; PLE 0.40; AME– AME 0.17; AME–ALE 0.02; PME–PME 0.27; PME–PLE 0.45; AME–PME 0.38; ALE–PLE 0.30; clypeus AME 0.34; clypeus ALE 0.30. Leg formula: 2143. Measurements of palp and legs: palp: 11.20 (4.10, 2.00, 2.20, 2.90); I: 31.60 (8.50, 3.60, 8.90, 8.00, 2.60); II: 35.40 (9.60, 3.90, 10.30, 8.90, 2.70); III: 28.30 (7.80, 3.30, 8.10, 6.90, 2.20); IV: 30.70 (8.50, 3.20, 8.60, 8.00, 2.40). Spination: palp: 131, 100, 2101; legs: Fe I&III 323, II 423/323, IV 321/331; Pa I–IV 001; Ti I–II 2126, Ti III–IV 2226; Mt I–II 1014, III 2026, IV 3036. Cheliceral furrow with 3 anterior and 4 posterior teeth.

Colouration in ethanol: Prosoma yellowish-brown, medially and antero-laterally light red, posteriorly and postero-laterally light brown. Sternum yellowish-white with brown margin. Opisthosoma yellowish-white, median part with four brown dots, posteriorly dark brown, dorsally yellowish-white, laterally with brown stripes. Chelicerae yellowish-brown. Palps and legs yellowish-brown.

Palp as in diagnosis. Embolic apophysis narrow, slightly shorter than embolus and only visible in prolateral view. Tip of embolic apophysis wide in prolateral view. Embolus slender and evenly curved. Conductor distally wide, arising from 12-o’clock position. Spermophore slightly curved in ventral view. dRTA longer than vRTA.

Description: Female (paratype): Total length 16.00; prosoma 6.70 long, 5.60 wide, anterior width of prosoma 3.60; opisthosoma 9.30 long, 6.10 wide. Eye measurements: AME 0.29; ALE 0.42; PME 0.30; PLE 0.44; AME– AME 0.25; AME–ALE 0.08; PME–PME 0.36; PME–PLE 0.50; AME–PME 0.39; ALE–PLE 0.42; clypeus AME 0.59; clypeus ALE 0.52. Leg formula: 2413. Measurements of palp and legs: palp: 10.20 (3.00, 1.70, 2.40, 3.10); I: 28.45 (7.70, 3.40, 8.30, 6.70, 2.35); II: 31.50 (8.70, 3.70, 9.30, 7.40, 2.40); III: 26.60 (7.60, 3.00, 7.60, 6.30, 2.10); IV: 28.80 (8.00, 3.00, 8.00, 7.40, 2.40). Spination: palp: 131, 101, 2121, 2014; legs: Fe I–II 323, III 323/322, IV 331; Pa I–IV 001; Ti I 1026, II–III 2026, IV 2126; Mt I–II 0004, III 2016 /1016, IV 3036. Cheliceral furrow with 3 anterior and 4 posterior teeth.

Colouration in ethanol: Prosoma yellowish-brown, anterior part reddish-brown, posteriorly yellow. Sternum yellowish-white with brown margin. Opisthosoma yellowish-white, medially with four brown dots, posterior part dark brown, ventral part yellowish-white, posteriorly brown. Chelicerae dark reddish-brown. Palps and legs yellowish-brown.

Copulatory organ as in diagnosis. Epigynal field with one slit sensillum on the right and two slit sensilla on the left side. Sclerotized bulges partially covered by lateral lobes. Lateral lobes fused, posteriorly with triangular median indentation. Fusion bubbles situated posteriorly on epigyne. Posterior part of internal duct system bulging postero-laterally, rounded. Glandular appendages long, only distal part curved. Fertilization ducts arising posteromedially on posterior part, curved.

Variation: Male (n=3): Total length 11.50–12.70; prosoma 5.90–6.30 long, 4.60–5.50 wide, anterior width of prosoma 2.70–3.20; opisthosoma 5.60–6.50 long, 2.70–3.60 wide. Measurements leg I: total length 26.65–30.20, Fe 7.00–8.00, Pa 3.00–3.40, Ti 7.60–8.60, Mt 6.85–7.80, Ta 2.20–2.60. Spination: palp: Pa 101, Ti 2111; legs: Fe III 332, 333; Ti II 2226.

Variation: Female (n=8): Total length 12.90–15.70; prosoma 6.00–7.20 long, 5.00–6.10 wide, anterior width of prosoma 3.50–4.00; opisthosoma 6.80–8.30 long, 3.30–6.20 wide. One female with cheliceral furrow posterior left 4, right 5. Measurements leg I: total length 25.65–29.00, Fe 6.90–7.90, Pa 3.10–3.60, Ti 7.35–8.40, Mt 6.30– 7.00, Ta 2.00–2.20. Spination: palp: Mt 2014; legs: Fe I 313, 432, Fe II 333, Fe III 322, 324, 332, 333, Fe IV 321, 431; Ti I 2026, Ti II 2027, Ti III 2126, Ti IV 2226.

Distribution: Thailand, Chiang Mai Province.

Figures

FIGURES 52 a–g. Sinopoda chiangmaiensis spec. nov., holotype male and paratype female from Tham Pha Daeng. a–d left male palp (a prolateral, b ventral, c tip of embolus and embolic apophysis, d retrolateral); e Epigyne, ventral; f Vulva, dorsal; g Schematic course of internal duct system. SB—sclerotised bulges. Arrow on posteriorly triangular median indentation.

FIGURES 53 a–b. Sinopoda lot spec. nov., holotype female from Tham Lot, copulatory organ. a Epigyne, ventral; b Vulva, dorsal.

FIGURES 54 a–c. Sinopoda phathai spec. nov., holotype female from Pha Thai Cave, copulatory organ. a Epigyne, ventral; b Schematic course of internal duct system, c Vulva, dorsal.