Scymnus (Orthoscymnus) crispatus Chen & Ren

Chen, Xiaosheng, Canepari, Claudio, Wang, Xingmin & Ren, Shunxiang, 2016, Revision of the subgenus Orthoscymnus Canepari of Scymnus Kugelann (Coleoptera, Coccinellidae), with descriptions of four new species, ZooKeys 552, pp. 91-107 : 100

Taxon classification Animalia Coleoptera Coccinellidae

Scymnus (Orthoscymnus) crispatus Chen & Ren sp. n. Figs 5 a–h, 9

Diagnosis.

This species is similar to Scymnus (Orthoscymnus) rhododendri in male genitalia, but can be distinguished from it by the elongate oval parameres (Fig. 5h) and the narrow, sub-triangular penis guide in ventral view (Fig. 5g).

Description.

TL: 1.59-1.65 mm, TW: 0.90-1.01 mm, TH: 0.68-0.76 mm, TL/TW: 1.59-1.63, PL/PW: 0.53-0.55, EL/EW: 1.27-1.32, HW/PW: 0.59-0.63, PW/EW: 0.73-0.74.

Body elongate oval, moderately convex, dorsum covered with white pubescence (Fig. 5 a–c). Head yellow. Antennae and mouthparts yellowish brown. Pronotum yellow. Scutellum black. Elytra black with apical margin narrowly brown. Prothoracic hypomeron yellow. Prosternum brown. Mesoventrite, metaventrite and elytral epipleura black. Legs yellowish brown.

Head with fine frontal punctures, as large as eye facets, 0.5-1.0 diameter apart. Eyes densely faceted, interocular distance 0.43 times head width. Pronotal punctures slightly larger than those on frons, 1.0-2.0 diameters apart. Surface of elytra with punctures much larger than those on pronotum, separated by 2.0-3.0 diameters. Prosternal process trapezoidal, 4 times as long as its width at base; with lateral carinae extending to anterior margin of prosternum, distinctly convergent anteriorly. Abdominal postcoxal lines extending nearly to posterior margin of abdominal ventrite 1 (Fig. 5d), area enclosed by lines finely punctate, broadly smooth along line. Abdominal ventrite 5 strongly emarginate and ventrite 6 weakly emarginate apically in male.

Male genitalia. Penis stout (Fig. 5e); penis capsule highly sclerotized with tiny inner arm and large outer arm; apex of penis with membranous appendage (Fig. 5f). Tegmen stout (Fig. 5 g–h) with penis guide slightly constricted at base, widest at basal 1/4 length, then tapering gradually to pointed apex in ventral view (Fig. 5g) and its apex curved outwardly in lateral view (Fig. 5h). Parameres elongate oval, shorter than penis guide, sparsely setose at apices (Fig. 5h).

Female externally similar to male but with abdominal ventrites 5 and 6 truncate apically. In some specimens, pronotum and elytra are entirely reddish brown.

Type material.

Holotype: male, No. SCAU (E) 13195, China: Tibet: Jilong Town, Jilong County, 28°23.00'N, 85°19.60'E, ca 2900 m, 29. X. 2011, Li WJ leg. Paratypes (71): 15♂55♀ with same data as holotype. 1♂, Lebu Village, Cuona County, 27°48.63'N, 91°44.98'E, ca 2400 m, 24. X. 2011, Huo LZ leg. (SCAU)

Distribution.

China (Tibet).

Etymology.

The species name is an adjective derived from Latin ( ‘crispatus’ = crispate), referring to its parameres with crispate surface in ventral view.