Thyene bilineata Lawrence, 1927

Azarkina, Galina N. & Foord, Stefan H., 2013, Redescriptions of poorly known species of jumping spiders (Araneae: Salticidae) from South Africa and Namibia, Zootaxa 3686 (2), pp. 165-182 : 176-179

Thyene bilineata Lawrence, 1927

Figs 36 , 54–62

Thyene bilineata Lawrence, 1927: 64 , pl. 2, fig. 51 (Ƥ, examined).

Thyene bilineata striatipes Lawrence, 1927: 65 (Ƥ, examined) syn. n.

Type material: Lectotype, Ƥ designated here ( SAM, #B6938) South West Africa, Kunene R., March 1923 [= Namibia, Kunene, Kunene River, ca. 17°05'S, 12°10'E, 0 3.1923 (Collector unknown)]. Paralectotypes: 2Ƥ ( SAM, #B6114) South West Africa, Ongandjera, Ovamboland [= Namibia, Omusati, Ongandjera, 17°53'S, 15°04'E, 0 3.1923 (Collector unknown)]; 1Ƥ ( SAM, #B6760) South West Africa, Oncka, March 1923 [= Namibia, Ohangwena, Onka, ca. 17°40'S, 16°00'E, 0 3.1923 (Collector unknown)]; Syntipes ( Thyene bilineata striatipes ): 4Ƥ ( SAM, #B6146) South West Africa, Kunene R., C 1712BC, March 1923, R.F. Lawrence [= Namibia, Kunene, Kunene River, ca. 17°15'S, 12°30'E, 0 3.1923 (R.F. Lawrence)].

Other material: Namibia: 1 juv. ( SAM, #B6176, marked as Ƥ among types) Kunene, Kunene River, ca. 17°05'S, 12°10'E, 0 3.1923 (Collector unknown); RSA: 1Ƥ (NCA 2012/2715) Gauteng, Pretoria/Tswane, Roodeplaatdam Nature Reserve, 26°21'S, 28°21'E, sweepnetting, grass and shrubs, 17.10.1983 (A. van den Berg, C. Schulz); 1Ƥ (NCA 2012/2716) Gauteng, Pretoria/Tswane, Roodeplaatdam Nature Reserve, 26°21'S, 28°21'E, sweepnetting, grass, 25.10.1982 (A. van den Berg, I. van Rooyen); 1Ƥ (NCA 2012/2717) Gauteng, Pretoria/ Tswane, Roodeplaatdam Nature Reserve, 26°21'S, 28°21'E, sweepnetting and beating, grass and trees, 25.01.1983 (A. van den Berg, T. Marren); 1Ƥ (NCA 83/24) Gauteng, Pretoria/Tswane, Roodeplaatdam Nature Reserve, 26°21'S, 28°21'E, sweepnetting, 9.03.1982 (I. van Rooyen, T. Marren).

Diagnosis. The species differs from other Thyene species by body coloration – two brown stripes on carapace and abdomen ( Fig. 59 ). T. bilineata is closely related to T. semiargentea (Simon, 1884) . It differs by body coloration (cf. Wesołowska & Russell-Smith, 2000: figs 303 and 55–60) and the presence of simple spermathecae ( Fig. 55 ), cf. Wesołowska & Russell-Smith, 2000: figs 305–305 and 53–54).

Description. Female (NCA 2012/2717): Carapace: 2.70 long, 2.30 wide, 1.40 high. Abdomen: 3.90 long, 2.50 wide. Eye field: 1.20 long, anterior 1.55 wide, posterior 1.60 wide. Cheliceral length 0.90. Clypeal height 0.20. Diameter of AME 0.55. Length of leg segments: I 1.50+1.00+1.10+0.80+0.50; II 1.40+0.90+0.80+0.70+0.50; III 1.90+1.00+0.95+1.10+0.60; IV 1.70+0.80+1.10+1.10+0.60. Leg spination: I: Fm d 0-1-1-3; Tb v 0-2-2-1-2ap or 0- 1-2-1-2ap; Mt v 0-2-2ap. II: Fm d 0-1-1-3; Tb v 1-2 -2ap or 1-1-2ap; Mt v 2-2 ap. III: Fm d 0-1-2-4; Pt rt 1; Tb pr 1- 1, rt 1-1 or 1-1-1, v 0-0-2ap; Mt pr and rt 1-0-2ap, v 1 -0-2ap or 2-0-2ap. IV: Fm d 0-1-1-2; Pt rt 1; Tb rt 1-1, v 0-0- 2ap; Mt pr 0-0-2ap, rt 1-0-2ap; v 0-0-2ap. Carapace brownish-yellow to yellow, with two bands from PME to posterior rim of carapace, formed from sparse brown hairs ( Figs 59, 62 ). Ocular area white-yellow, some specimens with brown spots in the middle part of ocular area that barely perceptible, covered with transparent iridescent scales. Eyes with black rings. Laterally ocular area with bunch of long dense bristles. Clypeus and cheeks yellow, with bands of white hairs on each cheek from AME to lateral sides of carapace ( Figs 58, 61 ). Chelicerae yellow, covered with sparse yellow hairs. Sternum yellow. Abdomen whitish-grey-yellow. Ventrally with three brown bands from epigastric fold to spinnerets. Dorsum covered with white, transparent scales, and two broad brown bands. Spinnerets brownish-yellow. Book-lungs white-grey. All legs brownish-yellow, covered with sparse white and brown hairs. First pair of legs robust, larger than the rest. Femora I with transverse prolateral brown stripes. Palps yellow, covered with white hairs. Structure of epigyne and spermathecae as in Figs 54–55 .

Male unknown.

Distribution. Namibia and Republic of South Africa.

Comments. We selected the lectotype because this specimen was drawn by Lawrence (Lawrence 1927). Thyene bilineata striatipes epigyne’s differ slightly from other Thyene bilineata epigynes. There are considerable intra- and interspecific variation in the epigynal shape of the genus Thyene and we therefore do not recognise the subspecies and synonymize T. bilineata striatipes with T. bilineata .

Figures

FIGURE 36. Distribution records of Euophrys quadrispinosa (star), Thyene bilineata (square) and Thyenula natalica (circle;? exact locality unknown).

FIGURES 54 – 56. Thyene bilineata. 54 epigyne, ventral view; 55 spermathecae, dorsal view; 56 scheme of insemination ducts. Scale bars: 54 – 55, 0.1 mm.

FIGURES 57 – 62. Thyene bilineata. 57 – 59 paralecotype (57 female habitus, ventral view; 58 female " face "; 59 female habitus, dorsal view; 60 – 62 specimen from RSA (60 female habitus, ventral view; 61 female " face "; 62 female habitus, dorsal view). Scale bars: 0.1 mm.