Scymnus (Parapullus) hastatus, Chen, Xiaosheng, Ren, Shunxiang & Wang, Xingmin, 2015

Chen, Xiaosheng, Ren, Shunxiang & Wang, Xingmin, 2015, Contribution to the knowledge of the subgenus Scymnus (Parapullus) Yang, 1978 (Coleoptera, Coccinellidae), with description of eight new species, Deutsche Entomologische Zeitschrift 62 (2), pp. 211-224 : 211

Taxon classification Animalia Coleoptera Coccinellidae

Scymnus (Parapullus) hastatus sp. n. Figs 1, 9

Diagnosis.

This species is easily confused with several species having unicolourous reddish brown body in this subgenus, but can be recognized by the stout penis guide with a hook-like appendage at apex in lateral view (Fig. 1h).

Description.

TL: 2.31-2.43 mm, TW: 1.53-1.67 mm, TH: 0.98-1.04 mm, TL/TW: 1.46-1.51, PL/PW: 0.56-0.57, EL/EW: 1.13-1.16, HW/PW: 0.59-0.62, PW/EW: 0.73-0.74.

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

Head with fine frontal punctures, as large as eye facets, 1.0-2.0 diameters apart. Eyes densely faceted, interocular distance 0.51 times head width. Pronotal punctures as large as those on frons, 2.0-3.0 diameters apart. Surface of elytra with punctures larger than those on pronotum, separated by 2.5-3.0 diameters. Prosternal process trapezoidal, 2 times as long as its width at base; with lateral carinae distinct, extending to anterior margin of prosternum, distinctly convergent anteriorly. Abdominal postcoxal lines weakly recurved and distinctly incomplete laterally (Fig. 1d), reaching 6/7 length of abdominal ventrite 1, area enclosed by lines coarsely punctate, broadly smooth along line. Abdominal ventrite 5 in male with apex truncate.

Male genitalia: penis stout, unevenly sinuated (Fig. 1e). Penis capsule highly sclerotized with small inner arm and large outer arm (Fig. 1e). Apex of penis strongly curved with distinctly membranous appendage (Fig. 1f). Tegmen extremely stout (Fig. 1 g–h) with penis guide narrowest at base, gradually expanding to a spade-like apex bearing with a digitations in ventral view (Fig. 1g); in lateral view, penis guide strongly raised at middle with a hook-like appendage at apex (Fig. 1h). Parameres slender with rounded apex, slightly longer than penis guide, densely covered with two groups of long setae at apices (Fig. 1h).

Female unknown.

Type materials.

Holotype: male, No. SCAU (E) 11346, China: Gansu: Dongshan, Xinglongshan National Nature Reserve, Yuzhong County, Lanzhou City, 35°47.83'N, 104°3.93'E, ca 2300 m, 3. VIII. 2007, Liang JB leg. Paratypes (3): 3♂ with same data as holotype.

Distribution.

China (Gansu).

Etymology.

The species name is derived from the Latin adjective hastatus referring to its penis guide with halberd-like apex in ventral view.