Lysiteles dentatus, Tang, Guo, Yin, Chang-Ming, Peng, Xian-Jin, Ubick, Darrell & Griswold, Charles, 2007

Tang, Guo, Yin, Chang-Ming, Peng, Xian-Jin, Ubick, Darrell & Griswold, Charles, 2007, Five crab spiders of the Genus Lysiteles from Yunnan Province, China (Araneae: Thomisidae), Zootaxa 1480, pp. 57-68 : 62-64

Lysiteles dentatus sp. nov.

Figs 28–40

Type material. Holotype male, CHINA, Yunnan Province, Tengchong County, Tengyue Township, Laifengshan, 1780 m [25.01053°N, 98.28367°E], 31 May 2006, Chang-Min Yin, Jia-Fang Hu and Xiao-Hua Yang (HNU-YHY1601). Paratypes: 14 ɗ, 5 Ψ, same data as holotype, ( HNU: 7 ɗ, 3 Ψ; CAS: 7 ɗ, 2 Ψ). CHINA, Yunnan Province, Tengchong County: 1 ɗ, Xinhua Township, Longjing Village, Shanqing, 1880 m [24.48243°N, 98.31454°E], 27 May 2006 (HNU-YHY1306); 1 ɗ, Xinhua Township, Longjing Village, 1940 m [24.48203°N, 98.23390°E], 5 June 2006 (CAS-YHY2902); 2 ɗ, 2 Ψ, Puchuan Township, Miguo Village, 1920 m [24.48288°N, 98.32031°E], 5 June 2006 (HNU-YHY3001: 1 ɗ, 1 Ψ; CAS-YHY3001: 1 ɗ, 1 Ψ). All of the above-mentioned specimens were collected by Chang-Min Yin, Jia-Fang Hu and Xiao-Hua Yang. Gongshan County: 1 Ψ, New Road, Heiwadi, 1850 m [27.47101ºN, 98.35533ºE], 13–16 Nov. 2004, Guo Tang (HNU-Tang0412).

Etymology. The specific name is from the Latin “ dentatus ”, and refers to the small denticle-shaped ATA on the bulb of male palp.

Diagnosis. The new species is very similar to Lysiteles conicus sp. nov. in general appearance. The differences between the two species are discussed in the description of L. conicus .

Description. Male (holotype): Total length 3.20. Prosoma 1.50 long, 1.30 wide; opisthosoma 1.80 long, 1.20 wide. Carapace yellow, darken on the margin, with long bent setae and a pair of grayish brown paramedian stripes. Eye area light brown. Both anterior and posterior eye rows strongly recurved. Lateral eyes with large tubercles. Eye sizes and interdistances: ALE 0.15, PLE 0.10, AME 0.09, PME 0.05; AME-AME 0.12, AME-ALE 0.11, PME-PME 0.20, PME-PLE 0.25, MOA long 0.35 with front width 0.30 and back width 0.32, Clypeus height 0.18. Legs yellow with many spines. Leg measurements: I 6.00 (1.80, 2.00, 1.30, 0.90), II 6.40 (2.00, 2.00, 1.50, 0.90), III 3.70 (1.10, 1.20, 0.80, 0.60), IV 4.10 (1.30, 1.30, 0.90, 0.60); formula 2, 1, 4, 3. Spination: Femora: I prolateral 0-1-1-1, I-IV dorsal 1-1-1-1; Patellae: I-IV 1(weak)-1, prolateral 0-1-0, retrolateral 0-1-0; Tibiae: I-II pro- and retrolateral 1-1-1, dorsal 1-0-1, ventral 2-0-2, III-IV pro-, dor- and retrolateral 1-1, ventral 2-2; metatarsi I-II pro-, dor- and retrolateral 1-1-1, ventral 2-2-2, III-IV pro- and retrolateral 1-1, ventral 2-2. Opisthosoma slim, dorsum yellow with small white dots and black markings, with 2 light brown muscular depressions; anteriorly with scattered black dots, each with a long black hair; dorsally with three sets of posterior bands; ventrally with grayish black rectangular mark anterior of spinnerets.

Palp ( Figs. 30–34 , 39–40 ): VTA digitiform, setose, curved mesally; ITA and RTA fused basally, ITA strongly sclerotized, with sharp point, RTA translucent, long falciform. Bulb with a small tooth-shaped ATA mesally, embolus filiform and twisted helically.

Female (one of the paratypes, HNU-YHY1601): Total length 3.40. Prosoma 1.30 long, 1.30 wide; opisthosoma 2.20 long, 1.40 wide. Body color same with male. ALE 0.12, PLE 0.10, AME 0.08, PME 0.05, AME-AME 0.16, AME-ALE 0.15, PME-PME 0.25, PME-PLE 0.26; MOA long 0.35, front width 0.32, back width 0.35. Clypeus height 0.20. Sternum cordiform, lightly yellow, with short hairs. Chelicerae, gnathocoxae, labium and leg yellow. Distal parts of both tibia I and II brown. Legs with many spines. Leg measurements: I 4.40 (1.50, 1.50, 0.90, 0.50), II 4.70 (1.50, 1.60, 1.00, 0.60) III 3.40 (1.00, 1.30, 0.60, 0.50), IV 3.50 (1.20, 1.20, 0.60, 0.50); formula 2, 1, 4, 3. Spination: Femora: I prolateral 0-1-1-1, I, IV dorsal 0-1-0-1, II dorsal 1-1-0-1, III dorsal 1-1-1-1; II Patellae: I-IV 1(weak)-1, prolateral 0-1-0, retrolateral 0-1-0; Tibiae: I-II pro- and retrolateral 1-1-1, dorsal 1-0-1, ventral 2-0-2, III-IV pro-, dor- and retrolateral 1-1, ventral 2-2; metatarsi I-II pro-, dor- and retrolateral 1-1-1, ventral 2-2-2, III-IV pro- and retrolateral 1-1, ventral 2-2. Opisthosoma wider than in male, others similar with male. The venter light yellow, with a rectangular gray marking, with 2 pairs of white spots anterior of spinnerets.

Epigyne-vulva ( Figs. 37–38 ): Epigyne brown, sclerotized plate convex medially. Copulatory openings posteriolateral; copulatory ducts twisted and visible in ventral view before maceration, slender and curled into two loops. Spermathecae ovoid.

Variation. Total length: female 3.00–3.60 (n = 8), male 2.80–3.30 (n = 19). Some specimens lacking paramedian stripes on carapace. The spots on posterior dorsum vary in size.

Distribution. China (Yunnan Province).

Figures

FIGURES 28 – 34. Lysiteles dentatus sp. nov. 28 Female, habitus; 29 Male, habitus, 30 – 32 left palp (30 prolateral, 31 ventral, 32 retrolateral); 33 Embolus enlarged, ventral; 34 Tibial apophyses enlarged, retrolateral. Scale bars: 28 – 29 1 mm, 30 – 34 0.1 mm. ATA = apical tegular apophysis; E = embolus; ITA = intermediate tibial apophysis; RTA = retrolateral tibial apophysis; VTA = ventral tibial apophysis.

FIGURES 35 – 40. Lysiteles dentatus sp. nov. 35 Female, habius; 36 Male, habitus; 37 Epigyne, 38 Vulva; 39 Left palp, ventral; 40 Tibial apophyses enlarged, retrolateral. Scale bars: 35 – 36 1 mm, 37 – 39 0.1 mm. E = embolus; ITA = intermediate tibial apophysis; RTA = retrolateral tibial apophysis; VTA = ventral tibial apophysis.