Scymnus (Orthoscymnus) smetanai Canepari, 1997

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 : 94

Taxon classification Animalia Coleoptera Coccinellidae

Scymnus (Orthoscymnus) smetanai Canepari, 1997 Figs 1 a–h, 8

Scymnus (Orthoscymnus) smetanai Canepari, 1997: 17; Poorani 2002: 357; Kovář 2007: 586.

Diagnosis.

This species can be easily separated from other members of the subgenus Orthoscymnus by having entirely reddish brown body. It is also similar to Scymnus (Pullus) martensi Canepari in general appearance and particularly in the shape of abdominal postcoxal lines, but can be distinguished from it by the much smaller body and the swollen apex of penis bearing short thread-like appendage (Fig. 1f).

Description.

TL: 1.49-1.59 mm, TW: 1.09-1.19 mm, TH: 0.69-0.80 mm, TL/TW: 1.25-1.46, PL/PW: 0.56-0.64, EL/EW: 1.03-1.17, HW/PW: 0.54-0.59, PW/EW: 0.66-0.74.

Body rounded oval, moderately convex, entirely reddish brown, dorsum covered with white pubescence (Figs 1 a–c).

Head with fine frontal punctures, slightly larger than eye facets, 1.0-2.0 diameters apart. Eyes densely faceted, interocular distance 0.45 times head width. Pronotal punctures as large as those on frons, 1.0-2.0 diameters apart. Surface of elytra with punctures larger than those on pronotum, separated by 2.0-3.0 diameters. Prosternal process trapezoidal, 2 times as long as its width at base; with lateral carinae extending to anterior margin of prosternum, distinctly convergent anteriorly. Abdominal postcoxal lines reaching 3/4 length of abdominal ventrite 1 (Fig. 1d), area enclosed by lines coarsely punctate, narrowly smooth along line. Abdominal ventrite 5 with apex truncate in male.

Male genitalia. Penis stout; penis capsule with small and curved inner arm, outer arm large bearing horn-shaped appendage (Fig. 1e); apex of penis distinctly swollen, bearing short thread-like appendage (Fig. 1f). Tegmen stout (Fig. 1 g–h) with penis guide widest at base, gradually tapering to blunt apex in ventral view (Fig. 1g). Parameres longer than penis guide, densely covered with long setae at apices and inner sides (Fig. 1h).

Female externally similar to male but with abdominal ventrite 5 rounded apically.

Type material.

Holotype: male, "Nepal, Khandbari Distr., forest above Ahale, (27°27.62'N, 87°11.49'E), 2300m, 26. III. 82, leg. Smetana" (MNHG).

Other material examined.

Nepal: Koshi: 1♂, on the way from Dharan to Dhankuta, 26°52.94'N, 87°19.74'E, 400-700 m, 20. X. 2011, Chen XS leg.

Distribution.

Nepal (Koshi).