Spartaeus pinniformis, Yang & Liu & Liu & Peng, 2017

Yang, Su-Fang, Liu, Wang, Liu, Ping & Peng, Xian-Jin, 2017, Five new species of Spartaeus Thorell, 1891 from China (Araneae: Salticidae), Zootaxa 4303 (3), pp. 379-394 : 381-384

Spartaeus pinniformis sp. nov.

Figs 3–4 , 11 B

Type material: Holotype: male, CHINA, Yunnan, Gongshan County, Dulongjiang Township, Kongdang Village , 27.8796°N, 98.3388°E, 1527 m, 25 October 2004, Guo Tang (Tang-04-04H). Paratypes: CHINA, Yunnan: 3 males, 2 females, same data as holotype (Tang-04-04P).

Etymology. The specific name is the combination of the Latin “ pinna ” (fin) and “ forma ” (form), referring to the fin-shaped retrolateral tibial apophysis; to be treated as a Latin adjective.

Diagnosis. The male of the new species is similar to that of S. jaegeri Logunov & Azarkina, 2008 described from Luang Nam Tha, Laos (see Logunov & Azarkina 2008, figs 61–70), but can be reliably distinguished by: tibia with 3 apophyses ( Figs 3 B, 4A), while with 2 in S. jaegeri ( Logunov & Azarkina 2008, figs 61–64); tegular apophysis almost small finger-shaped ( Figs 3 B, 4A), while large triangular in S. jaegeri ( Logunov & Azarkina 2008, fig. 61); apex of ventral tibial partly covers the base of cymbium ( Figs 3 B, 4A), while far away from the base of cymbium in S. jaegeri ( Logunov & Azarkina 2008, figs 61, 63); in ventral view, retrolateral tibial apophysis wider and shorter, fin-shaped ( Figs 3 B, 4A), while spoon-shaped in S. jaegeri ( Logunov & Azarkina 2008, figs 63– 64). The females of the new species resemble those of S. jianfengensis (see Peng & Li 2002, figs 1A–G), but can be distinguished by: spermathecae kidney-shaped ( Figs 3 E–F, 4D–E), while inverted pear-shaped in S. jianfengensis ( Peng & Li 2002, figs 1F–G).

Description. Male (holotype): Total length 6.17. Prosoma 2.59 long, 2.07 wide. Opisthosoma 3.27 long, 1.49 wide. Clypeus height 0.08. Carapace ( Fig. 3 A) yellowish brown, sides brown with light patterns. Fovea long, dark brown; cervical and radial grooves light brown. Eye diameters and interdistances: AME 0.55, ALE 0.35, PME 0.20, PLE 0.33, AERW 1.21, PERW 1.17, EL 1.37. Clypeus brown. Chelicerae strong and dark brown, covered with long brown hairs, 6 promarginal teeth and 8 retromarginal denticles ( Fig. 4 C). Clypeus yellowish brown. Endites and labium light yellowish brown, margin light yellow, covered with dense brown tuft. Sternum scutiform, light yellow, marginal area light brown, covered with brown hairs. Legs light yellow, bearing long and strong spines. Leg spinulation: tibiae I and II with 6 and 4 long ventral spines respectively, metatarsi I and II with 3 pairs of ventral long spines. Measurements of legs: I 8.00 (2.50, 3.50, 1.25, 0.75), II 6.40 (2.00, 2.50, 1.25, 0.65), III 6.30 (2.00, 2.50, 1.20, 0.60), IV 9.15 (2.50, 3.25, 2.50, 0.90). Leg formula: IV, I, II, III. Abdomen long oval. Dorsum ( Fig. 3 A) yellowish brown, covered with light brown hairs; median area with large light yellowish brown patch; sides with dark brown longitudinal bands; venter yellowish white, median area with a longitudinal large dark brown band. Spinnerets yellowish brown, covered with dark brown hairs. Palp ( Figs 3 B–C, 4A–B): embolus short, originating from the position of 12:00 o’clock in ventral view, terminal flat; bulb oval, tegular apophysis triangular; conductor small, membranous; ventral tibial apophysis short, terminal blunt and rotund in ventral view; intermediate tibial apophysis membranous, finger-shaped in retrolateral view ( Figs 3 B, 4A); retrolateral tibial apophysis thick and large, fin-shaped in ventral view, can be seen with many granules in retrolateral view ( Figs 3 C, 4B).

Female (paratype): Total length 5.93, Prosoma 2.51 long, 2.19 wide. Opisthosoma 3.29 long, 1.95 wide. Clypeus height 0.10. Carapace ( Fig. 3 D) dark brown, margin and eye surroundings blackish brown, covered with dense brown hairs. Fovea dark brown. Cervical and radial groove brown. Eye diameters and interdistances: AME 0.50, ALE 0.26, PME 0.62, PLE 0.23, AERW 1.05, PERW 1.17, EL 1.28. Clypeus yellowish brown, sparsely clothed by long brown hairs. Chelicerae light brown, with dense long yellow hairs, 5 promarginal teeth and 7 retromarginal denticles ( Fig. 4 F). Endites and labium light yellow, base with dense light brown tuft. Sternum scutiform, light yellow, covered with slender light brown tuft. Legs long and thin, light yellowish brown, bearing long and strong spines. Leg spinulation: tibia I and II with 7 and 5 pairs of long ventral spines respectively, metatarsi I and II with 3 pairs of ventral long spines. Measurements of legs: I 3.36 (0.95, 1.43, 0.56, 0.42), II 3.28 (1.13, 1.27, 0.43, 0.45), III 3.85 (1.33, 1.36, 0.67, 0.49), IV 4.20 (1.41, 1.54, 0.74, 0.51). Leg formula: IV, III, I, II. Abdomen oval. Dorsum ( Fig. 3 D) yellowish brown, covered with brown hairs; median area with a reddish brown longitudinal band; lateral with dark brown stripes, covered with a pair of dark brown outgrowths; venter yellowish brown, median area with one wide dark brown longitudinal band. Spinnerets yellowish brown, clothed by white and brown hairs. Epigyne ( Figs 3 E–F, 4D–E): copulatory openings small, slit-shaped in ventral view; copulatory ducts inconspicuous; spermathecae large, kidney-shaped; fertilization ducts short.

Distribution. Known only from Yunnan, China ( Fig. 11 B).

Figures

FIGURE 3. Spartaeus pinniformis sp. nov. A male holotype, dorsal view; B left male palp, ventral view; C same, retrolateral view; D female paratype, dorsal view; E epigyne, ventral view; F vulva, dorsal view. Scale bars: A, D 0.50; B – C, E – F 0.10.

FIGURE 4. Spartaeus pinniformis sp. nov. A left male palp, ventral view; B same, retrolateral view; C cheliceral teeth of male; D epigyne, ventral view; E vulva, dorsal view; F cheliceral teeth of female. Scale bars: A – F 0.10.

FIGURE 11. Distribution records. A ▲ S. forcipiformis sp. nov.; B ▲ S. serratus sp. nov., • S. pinniformis sp. nov.; C ▲ S. tengchongensis sp. nov.; D ▲ S. triapiculus sp. nov.