Sinopoda silvicola, 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 : 59-61

Sinopoda silvicola spec. nov.

Figs 39 a–e, 63 c–f

Type material: Holotype: male ( PJ 911 ), CHINA: Shaanxi Province: Taibaishan , 1550–1600 m, sieving, 09 June 1997, P. Jäger & M. Martens leg. ( SMF).

Paratypes: 2 females ( PJ 908 , PJ 912 ) with same data as for holotype ( SMF) .

Additional material examined (1 male, 1 female, 17 juveniles): 15 juveniles (SD 1583) with same data as for holotype ( SMF) . 1 male ( PJ 915 ) , 1 juvenile with same data as for holotype, except: 1600 m, 21–29 June 1997 ( SMF) . 1 female ( PJ 909 ) with same data as for holotype except: 1250–1550 m, by hand, 21 June 1997 ( SMF) .

Etymology: The species name is derived from the Latin word “silvicola“ meaning “living in the forest” and refers to the habitat in which the specimens were found; adjective.

Diagnosis: Males of S. silvicola spec. nov. are similar to those of S. campanacea Wang, 1990 in having a wide embolic apophysis and a wide vRTA. They can be distinguished from the latter species by 1. embolus with proximal part as wide as distal part (proximal part wider than distal part in S. campanacea ), 2. tegulum with median part narrower than posterior part (median part wider than posterior part in S. campanacea ), 3. spermophore situated more retrolaterally (situated medially in S. campanacea ), and 4. vRTA with tip tapering and dRTA bent disto-dorsally in retrolateral view (tip of vRTA rounded and dRTA bent ventro-distally in retrolateral view).

Females of S. silvicola spec. nov. can be distinguished from all other Sinopoda species by the combination of the following characters: 1. anterior part of lobal septum wider than median part, 2. epigynal pockets only extending in posterior half of epigyne, 3. spermathecae not fused at median line, 4. posterior part of spermathecae curved.

Description: Male (holotype): Total length 10.80; prosoma 5.20 long, 4.50 wide, anterior width of prosoma 2.50; opisthosoma 5.60 long, 3.60 wide. Eye measurements: AME 0.22; ALE 0.35; PME 0.25; PLE 0.32; AME– AME 0.22; AME–ALE 0.05; PME–PME 0.29; PME–PLE 0.35; AME–PME 0.27; ALE–PLE 0.32; clypeus AME 0.25; clypeus ALE 0.24. Leg formula: 2143. Measurements of palp and legs: palp: 7.90 (2.70, 1.50, 1.50, 2.20); I: 21.80 (5.70, 2.30, 5.80, 6.00, 2.00); II: 26.10 (6.90, 2.60, 6.90, 7.50, 2.20); III: 19.00 (5.40, 2.20, 4.90, 4.90, 1.60); IV: 21.20 (5.90, 2.10, 5.30, 6.00, 1.90). Spination: palp: 131, 101, 2101; legs: Fe I–III 323, IV 321; Pa I–IV 101; Ti I–IV 2326; Mt I–II 1014, III 3026, IV 3036. Cheliceral furrow with 3 anterior and 4 posterior teeth.

Colouration in ethanol: Prosoma yellowish-brown, laterally with brown spots, anterior part reddish-brown, posteriorly with yellow transversal stripe. Sternum yellow with brown margin. Opisthosoma yellowish-grey, anterolaterally with small brown spots, medially with four brown dots, posterior part dark brown, ventral part yellowishgrey, anteriorly with two brown longitudinal stripes, posteriorly with brown triangular spot, lateral part with brown spots. Chelicerae light brown, lateral part with brown stripes. Palps and legs yellowish-brown.

Palp as in diagnosis. Embolus curved and longer than embolic apophysis. Embolic apophysis curved and tapering, in prolateral view tip strongly pointed. Conductor long and curved, arising from 12-o’clock-position. Spermophore slightly curved in ventral view. Tegulum covering embolus base. RTA arising medially from tibia. vRTA shorter than dRTA, wide. dRTA long, in ventral view proximal part wide and tip tapering.

Description: Female (paratype): Total length 13.30; prosoma 5.40 long, 4.70 wide, anterior width of prosoma 3.00; opisthosoma 7.90 long, 5.20 wide. Eye measurements: AME 0.23; ALE 0.33; PME 0.23; PLE 0.31; AME– AME 0.26; AME–ALE 0.07; PME–PME 0.35; PME–PLE 0.43; AME–PME 0.31; ALE–PLE 0.36; clypeus AME 0.35; clypeus ALE 0.28. Leg formula: 2413. Measurements of palp and legs: palp: 6.90 (2.00, 1.20, 1.60, 2.10); I: 15.40 (4.30, 2.10, 4.10, 3.50, 1.40); II: 17.30 (5.00, 2.30, 4.50, 4.00, 1.50); III: 14.60 (4.30, 2.00, 3.70, 3.30, 1.30); IV: 16.30 (4.70, 2.00, 3.90, 4.20, 1.50). Spination: palp: 131, 001, 2121, 1014; legs: Fe I–II 323, III 323/322, IV 321; Pa I–II 001, III–IV 101; Ti I–II 2026, III 2226 /2126, IV 2226; Mt I–II 1014, III 3026, IV 3036. Cheliceral furrow with 3 anterior and 4 posterior teeth.

Colouration in ethanol: Prosoma yellowish-brown, anteriorly and antero-laterally light reddish-brown, laterally brown with dark brown stripes, posteriorly with yellow transversal stripe, postero-lateral margin brown. Sternum yellow with light brown margin. Opisthosoma yellowish-grey with brown spots, ventral part yellow with brown dots. Chelicerae brown, retrolaterally with two brown stripes, proximal and proximo-lateral part yellow. Palps yellowish-brown; Ti and Mt brown. Legs yellowish-brown; Mt and Ta brown.

Copulatory organ as in diagnosis. Epigynal field wider than long with two anterior bands and one slit sensillum on right side. Lobal septum medially narrow. Lateral lobes fused, wide and arched. Epigynal pockets running from latero-posterior to medio-posterior. Fusion bubbles situated in posterior part of epigyne. Internal duct system wider than long. Spermathecae curved, posterior part rounded. Glandular appendages short and straight, extending not in posterior half of internal duct system. Fertilization ducts arising postero-medially from posterior part, short and curved.

Variation: Male (PJ 915): Total length 9.70; prosoma 4.70 long, anterior width of prosoma 2.60; opisthosoma 5.00 long, 3.20 wide. Measurements leg I: 20.20 (Fe 5.30, Pa 2.20, Ti 5.40, Mt 5.50, Ta 1.80).

Variation: Female (n=2): Total length 12.70–12.90; prosoma 4.80–5.20 long, 4.20–4.40 wide, anterior width of prosoma 2.70–2.80; opisthosoma 7.50–8.10 long, 5.40–5.70 wide. Measurements leg I: 14.30–14.40 (Fe 3.90– 4.00, Pa 2.00, Ti 3.70–3.80, Mt 3.30–3.40, Ta 1.20–1.30). Spination: legs: Fe III 323; Pa II 101, III 001, IV 101; Ti III 2026.

Distribution: Known only from the type locality.

Figures

FIGURES 39 a–e. Sinopoda silvicola spec. nov., holotype male and paratype female from Taibaishan. a–c left male palp (a prolateral, b ventral, c retrolateral); d Epigyne, ventral; e Vulva, dorsal.