Lesteva (Lesteva) cala Ma & Li

Ma, Wen-Li, Li, Li-Zhen & Zhao, Mei-Jun, 2012, Two new Lesteva Latreille (Coleoptera, Staphylinidae, Omaliinae) from Longwangshan Mountain, East China, ZooKeys 194, pp. 33-40 : 33-35

Lesteva (Lesteva) cala Ma & Li sp. n. Figs 13-5

Type locality.

Longwangshan Mountain, East China

Type material

(38 ♂♂, 35 ♀♀). Holotype:CHINA: Zhejiang Prov.: ♂, Anji County, Mt. Longwangshan, 25.iv.2004, alt. 950-1,200 m, Liang Tang leg. Paratypes:CHINA:Zhejiang Prov.,Anji County,Mt. Longwangshan: 5 ♂♂, 3 ♀♀, same label data as holotype; 3 ♀♀, 25.iv.2004, alt. 950-1,200 m, Jing-Wen Zhu leg.; 1 ♀, 25.iv.2004, alt. 950-1,200 m, Jia-Yao Hu leg.; 1 ♀, 25.iv.2004, alt. 950-1,200 m, Jing Chen leg.; 2 ♀♀, 25.iv.2004, alt. 950-1,200 m, Li-Long Zhu leg.; 2 ♂♂, 2 ♀♀, 24. iv.2004, alt. 300-500 m, Jing-Wen Zhu leg.; 2 ♂♂, 24.iv.2004, alt. 300-500 m, Jia-Yao Hu leg.; 3 ♂♂, 2 ♀♀, 24.iv.2004, alt. 300-500 m, Jing Chen leg.; 5 ♂♂, 24.iv.2004, alt. 300-500 m, Xin-Jin Li leg.; 8 ♂♂, 4 ♀♀, 24.iv.2004, alt. 300-500 m, Liang Tang leg.; 3 ♀♀, 24.iv.2004, alt. 300-500 m, Huang & Chi leg.; 1 ♂, 3 ♀♀, 24.iv.2004, alt. 300-500 m, Li-Long Zhu leg.; 4 ♂♂, 5 ♀♀, 23.iv.2004, alt. 300-500 m, Li-Long Zhu leg.; 3 ♂♂, 2 ♀♀, 23.iv.2004, alt. 300-500 m, Jing-Wen Zhu leg.; 2 ♂♂, 4 ♀♀, 23.iv.2004, alt. 300-500 m, Liang Tang leg.; 1 ♂, 23.iv.2004, alt. 300-500 m, Jing Chen leg.; 1♂, 23.iv.2004, alt. 300-500 m, Li & Hu leg.

Description.

Measurements and ratios: BL 3.3-3.9. Holotype: HL 0.59, HW 0.61, PL 0.63, PW 0.67, EL 1.24, EW 1.20, HL/HW 0.97, HW/PW 0.91, PL/PW0.94.

Habitus as in Fig. 1. Black, mouth-parts, antennae and legs uniformly rufo-testaceous. Each elytron with a dark red subhumeral macula. Pubescence pale, evident and recumbent on whole body.

Head sub-triangular, coarsely and sparsely punctate, widest across eyes and slightly broader across compound eyes than long; vertex moderately depressed; eyes prominent; ocelli distinct, distance between them slightly larger than that from lateral margin of each ocellus to mesal margin of eye; postocular margins about half length of longitudinal diameter of eye; antennae moderately long, overlapping base of pronotum by two terminal segments when pulled posteriad; antennomeres I broad at middle, antennomeres II much shorter and narrower than I, antennomeres III–XI gradually thickened; relative length of each antennomere from base to apex as 10: 6: 7.5: 6.5: 5.5: 5.5: 6: 5.5: 6.5: 6: 12.

Pronotum subcordate, moderately convex, widest near anterior third, slightly wider than head; lateral margins arcuate at anterior two-thirds and nearly straight at posterior third; punctation and pubescence similar to those on head; disc with shallow U-shaped depressed area. Scutellum subtriangular, surface with fine punctation and pubescence.

Elytra subtrapezoidal, gradually dilated posteriorly, posterior angles broadly rounded; punctation and pubescence distinctly finer and sparser than those on pronotum.

Abdomen broad, widest at segment IV (first visible abdominal segment), then distinctly narrowed posteriorly. Tergites with dense, fine punctation and decumbent pubescence; tergites IV–V each provided with one pair of tomentose admesal patches.

Male. Sternite VIII transverse, posterior margin broadly emarginate. Aedeagus (Figs 3-5) length 0.33 mm; median lobe narrow and much shorter than parameres, gradually narrowed apically; parameres symmetrical, each distinctly roundly broadened in apical half, with four long apical setae.

Female. Protarsomeres I–IV not dilated. Otherwise similar to male.

Distribution.

East China: Zhejiang Province.

Bionomics.

The type series were obtained by sifting leaf litter and wet moss at the streamside of the Longwangshan Mountain in late April.

Etymology.

The specific name ‘cala’ is a latinized Greek adjective and means‘beautiful’.

Remarks.

The new species is close to Lesteva huabeiensis Rougemont from Beijing in sharing similar elytral maculae, but it can be readily separated by the aedeagus with parameres much longer than the median lobe, Lesteva huabeiensis has the aedeagus with the median lobe slightly shorter than the parameres. Lesteva cala also resembles Lesteva pulcherrima Rougemont in the similar form of parameres, but differs in having a much narrower median lobe of the aedeagus and dark coloration of the body.