Chilocorus strenotubus Li & Wang, 2018

Li, Wenjing, Huo, Lizhi, Wang, Di, Ahrens, Dirk & Wang, Xingmin, 2018, Contribution to the genus Chilocorus Leach, 1815 (Coleoptera: Coccinellidae: Chilocorini), with descriptions of two new species from China, European Journal of Taxonomy 469, pp. 1-34 : 18-20

Chilocorus strenotubus Li & Wang sp. nov.

urn:lsid:zoobank.org:act:9258A913-6BF6-419B-812E-C80707513E96

Figs 14 , 22

Diagnosis

This species is similar to C. kuwanae Silvestri, 1909 in the shape of the body, but can be distinguished from it by the male genitalia: penis strongly stout ( Fig. 14e ); tegmen strongly stout with penis guide subtriangular, widest at base, gradually converging apically to blunted tip in ventral view ( Fig. 14h ).

Etymology

The specific epithet is derived from Latin and refers to the stout penis.

Type material

Holotype

CHINA: Ƌ, Inner Mongolia, Youyizhongqi, Keerqin , 19 Aug. 2009, S.X. Ren leg. ( SCAU (E) 11037).

Description (male)

MEASUREMENTS. TL: 3.41 mm, TW: 2.93 mm, TH: 1.77 mm, TL/TW: 1.16, PL/PW: 0.51, EL/EW: 1.02.

BODY. Roundish, strongly convex. Head, antenna and mouthparts brown-black, sparsely covered with short, greyish pubescence. Pronotum and scutellum black. Elytra black with a pair of oblong, orange spots, situated at centre, about ½ elytra width ( Fig. 14 a–c). Underside black except abdomen brown, sparsely covered with short, greyish pubescence. Head relatively large, 0.60 × as wide as pronotum, punctures on frons large and densely distributed, 1.0–2.0 diameters apart, surface polished between punctures. Eyes subtriangular, densely faceted, interocular distance 0.55 × as wide as head ( Fig. 14c ). Pronotum 0.59 × as wide as elytra, pronotal punctures moderately large and sparsely distributed, smaller than those on head, 2.0–3.5 diameters apart, surface polished between punctures. Punctures on elytra fine and sparsely distributed, 3.0–4.0 diameters apart, smaller than those on pronotum. Prosternal process moderate broad, slightly expanded to apex. Abdominal postcoxal lines incomplete, reaching posterior margin of abdominal ventrite 1 and running along posterior margin and almost reaching lateral margin. Posterior margin of male abdominal ventrite 5 truncate and 6 broadly rounded ( Fig. 14d ).

MALE GENITALIA. Penis stout and simple, penis capsule with short outer arms and long inner arms, apex of penis truncate and membranous around at ½ to apex ( Fig. 14 e–f). Tegmen distinctly stout with penis guide subtriangular, widest at base, gradually converging to blunt apex in ventral view and widest at base, gradually converging to blunt apex in lateral view. Parameres distinctly longer than penis guide

with densely covered with long setae at the inner sides and distal end with a group of long setae in lateral view ( Fig. 14 g–h).

Distribution

China (Inner Mongolia) ( Fig. 22 ).

Figures

Fig. 14. Chilocorus strenotubus Li & Wang sp. nov., holotype a. Dorsal view. b. Lateral view. c. Frontal view. d. Abdomen. e. Penis. f. Apex of penis. g. Tegmen, lateral view. h. Tegmen, ventral view. Scale bars: 0.1 mm. (SCAU (E) 11037)

Fig. 22. Distribution map. () = Chilocorus chalybeatus Gorham, 1892; () = C. shirozui Sasaji, 1968; (●) = C. hupehanus Miyatake, 1970; (Ǫ) = C. strenotubus Li & Wang sp. nov.; (▲) = C. kuwanae Silvestri, 1909; () = C. esakii Kamiya, 1959; (■) = C. alishanus Sasaji, 1968; (□) = C. bijugus Mulsant, 1853; () = C. bipustulatus (Linnaeus, 1758); () = C. geminus Zaslavskij, 1962.