Spartaeus serratus, 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 : 384-386

Spartaeus serratus sp. nov.

Figs 5–6 , 11 B

Type material: Holotype: female, CHINA, Yunnan, Longyang County, Bawan Township, Ganlin He at Baihua Village , 24.8411°N, 98.8914°E, 700 m, 1 June 2005, D.H. Kavanaugh, C. Griswold, Hong-bin Liang, Da-zhi Dong & Heng-mei Yan (GKJ035). Paratypes: CHINA, Yunnan: 1 female, Kunming Prefecture, Kunming, Heilongtan District , Kunming Institute of Botany botanical gardens, 25.1393°N, 102.7415°E, 1950 m, 22 June 2000, D.H. Kavanaugh & C. Griswold (P-215A).

Etymology. The specific name comes from the Latin “ serratus ” (serrate), referring to 7 serrate denticles on retromargin of chelicera; adjective.

Diagnosis. The new species is similar to S. spinimanus Thorell, 1878 described from Java, Sumbawa (see Wanless 1984, figs 4A–G), but can be distinguished by: copulatory openings “()”-shaped, medially located, as long as 1/8 length of epigyne ( Figs 5 B, 6A), while “) (”-shaped, posteriorly located, almost half long as epigyne in S. spinimanus ( Wanless 1984, fig. 4E); spermathecae inflated, tube-shaped ( Figs 5 C, 6B), while ball-shaped in S. spinimanus ( Wanless 1984, figs 4F–G); copulatory ducts touch each other medially ( Figs 5 C, 6B), while separate in S. spinimanus ( Wanless 1984, figs 4F–G); vulva with a wide U-shaped sclerite ( Figs 5 C, 6B), not present in S. spinimanus ( Wanless 1984, figs 4F–G).

Description. Female (holotype). Total length 9.60. Prosoma 3.40 long, 2.40 wide. Opisthosoma 6.20 long, 2.70 wide. Clypeus height 0.15. Carapace ( Fig. 5 A) bulged, covered with dense short white hairs, sides and ocular area black, a large light brown spot behind PER. Fovea long, slender, bar-shaped, black and sulciform; cervical and radial groove indistinct. Sternum oval, yellowish brown, slightly wider anteriorly, covered with dense brownish black hairs, margin with 4 dark brown spots. Eye diameter and interdistances: AME 0.70, ALE 0.35, PME 0.25, PLE 0.35, AERW 2.00, PERW 1.80, EL 1.20. Chelicerae reddish brown, with 5 promarginal teeth and 9 retromarginal denticles ( Fig. 6 C). Clypeus dark brown, median area light brown, covered with dense, long white hairs, marginal area with brush-shaped hairs. Endites and labium longer than wide, grayish brown, distal area light yellow covered with black hairs. Legs light brown to blackish brown, with black spots or annuli, covered with dense long black hairs, bearing long and strong spines. Leg spinulation: tibiae I and II with 3 pairs of long ventral spines, metatarsi I and II with 3 pairs of long ventral spines. Measurements of legs: I 5.40 (2.00, 1.60, 1.10, 0.70), II 5.10 (1.90, 1.40, 1.10, 0.70), III 6.30 (1.90, 2.10, 1.40, 0.90), IV 8.60 (2.40, 3.20, 2.00, 1.00). Leg formula: IV, III, I, II. Abdomen long oval. Dorsum ( Fig. 5 A) grayish black and covered with sparse brown long hairs, with 2 pairs of reddish brown muscular impressions, covered with sparse grayish black longitudinal or diagonal patterns; posterior with 4 or 5 dark arcs; each side with 2 small white spots, covered by white hairs; venter light yellow, covered with short reddish brown hairs. Spinnerets blackish brown. Epigyne ( Figs 5 B–C, 6A–B): copulatory openings longitudinal slit-shaped; copulatory ducts long, touching each other medially, above spermathecae; spermathecae large, complicated, its base enclosed by a U-shaped sclerite.

Male. Unknown.

Comments: The new species is included in Spartaeus for having relatively large PME, slightly smaller than ALE or PLE, positioned close to ALE; PLE usually as big as ALE, diameter of ALE about half that of AME; legs long & slender, bearing numerous long spines. Its classification is yet to be corroborated after the discovery of the male.

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

Figures

FIGURE 5. Spartaeus serratus sp. nov. A female holotype, dorsal view; B epigyne, ventral view; C vulva, dorsal view. Scale bars: A 1.00; B – C 0.10.

FIGURE 6. Spartaeus serratus sp. nov. A epigyne, ventral view; B vulva, dorsal view; C cheliceral teeth of female. Scale bars: A – C 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.