Lysiteles transversus, Tang, Guo, Yin, Chang-Ming, Peng, Xian-Jin, Ubick, Darrell & Griswold, Charles, 2008

Tang, Guo, Yin, Chang-Ming, Peng, Xian-Jin, Ubick, Darrell & Griswold, Charles, 2008, The crab spiders of the genus Lysiteles from Yunnan Province, China (Araneae: Thomisidae), Zootaxa 1742, pp. 1-41 : 35-37

Lysiteles transversus sp. nov.

Figs 19 a–l , 22

Type material: Holotype: male, CHINA, Yunnan Province, Tengchong County, Jietou Township, Datang Village, Daheling, Ganjiao [N25.42018°, E098.40946°], 1878 m, 19 May 2006, Xian-Jin Peng, Xin-Ping Wang and Peng Hu (HNU-PWH 060519).

Paratypes: Tengchong County: 5 ɗ, same data as holotype (2 ɗ, HNU; 3 ɗ, CAS); 2 Ψ, Mingguang Township, Zizhi Village, Cizhuhe [N25.45598°, E098.37026°], 2120 m, 21 May 2006, Chang-Min Yin and Jia-Fang Hu (YHY0909: 1 Ψ, HNU; 1 Ψ, CAS).

Etymology. The specific name is derived from the Latin transversus , meaning transverse and referring to the shape of the ITA of male palp, adjective.

Diagnosis. This species is similar to L. clavellatus sp. nov. ( Figs 3 a–d ) in general appearance; the differences are discussed in the diagnosis of L. clavellatus .

Description. Male (holotype): Total length 3.00. Prosoma 1.30 long, 1.20 wide; opisthosoma 1.80 long, 1.20 wide. Dorsal shield of prosoma light brown with 2 blackish brown bilateral stripes. Eye sizes and interdistances: AME 0.08, ALE 0.17, PME 0.05, PLE 0.10; AME - AME 0.12, AME - ALE 0.11, PME - PME 0.19, PME - PLE 0.23. MOA 0.25 long, front width 0.28, back width 0.34. Sternum, chelicerae, gnathocoxae, labium yellow. Legs brown with some spines, distal parts of tibiae, metatarsi and tarsi I, II all black, spination: femora: I prolateral 0-1-0-1 (left), 0-1-1-1 (right); I–IV dorsal 1 (weak)-1-1-1 (weak); patellae I–IV dorsal 1 (weak)-1; tibiae: I–II prolateral 1-1-1, dorsal 1-0-1, ventral 2-0-2; III–IV ventral 0-2-0. Leg measurements: I: 5.00 (1.45, 1.55, 1.20, 0.80); II: 5.30 (1.50, 1.65, 1.35, 0.80); III: 3.30 (1.10, 1.20, 0.60, 0.40); IV: 3.60 (1.20, 1.30, 0.60, 0.50), formula: 2, 1, 4, 3. Opisthosoma long ovoid, dorsum grayish brown with 1 pair of longitudinal black stripes; posteriorly with 3 pairs of transverse black stripes; medially with a pair of small white spots on each side; venter yellow with an arc-shaped black stripe before spinnerets.

Palp ( Figs 19 d–g , j ). Palp with VTA, ITA and RTA, which form a triangle with large median depression. VTA digitform, apically hooked; ITA located laterally, transverse spatula-shaped, apex curved dorsad; RTA stout with a denticle; bulb with ATA, embolus tube-shaped.

Female (one of the paratypes, HNU-YHY0909): Total length 3.50. Prosoma 1.30 long, 1.20 wide; opisthosoma 2.30 long, 1.90 wide. Markings as in male. Eye sizes and interdistances: AME 0.11, ALE 0.18, PME 0.06, PLE 0.12; AME-AME 0.15, AME-ALE 0.12, PME-PME 0.22, PME-PLE 0.28; MOA 0.28 long, front width 0.38, back width 0.38. Legs yellow with some weak spines. I, II tibiae with gray annuli, femora I with 3 prolateral spines, tibiae and metatarsi I, II with 2 pairs of ventral spines, tibiae and metatarsi III, IV with 1 pair of ventral spine. Leg measurements: I: 4.32 (1.40, 1.42, 0.80, 0.70), II: 4.65 (1.40, 1.60, 0.90, 0.75), III: 2.50 (0.80, 0.80, 0.50, 0.40), IV: 2.80 (0.90, 0.90, 0.60, 0.40), formula: 2, 1, 4, 3. Opisthosoma nearly oval, widest posteriorly, markings as in male; venter yellow with a U-shaped blackish brown marking. Epigyne-vulva ( Figs 19 h–i , k–l ). Atrium large; copulatory ducts short, curved; spermathecae pyriform. Variation. Total length: males 2.80–3.00 (n = 6); females 3.50–3.80 (n = 2). Female specimens with scattered white spots on sides of opisthosoma while male specimens without ( Figs 19 a–c ).

Distribution. China (recorded from Tengchong County of Yunnan).

Figures

FIGURES 19 a – i. Lysiteles transversus sp. nov. a – c Habitus (a male; b – c female); d – g Left palp (d prolateral, e ventral, f retrolateral, g dorsal view); h Epigyne; Scale bars: a – c = 1; d – i = 0.1.

FIGURES 19 j – l. Lysiteles transversus sp. nov. j Left palp, k Epigyne; l Vulva. Scale bars: k – l = 0.1.

FIGURES 3 a – l. Lysiteles clavellatus sp. nov. a – d Habitus (a male, b – d female); e – g, j Left palp (e prolateral, f, j ventral, g retrolateral view); h – i, k Epigyne. l Vulva; ATA apical tegular apophysis. Scale bars: a – d = 1; e – l = 0.1.