Gonioctena (Gonioctena) kanfani (Chen, 1941)

Cho, Hee-Wook, 2022, Two new species of the nominotypical subgenus Gonioctena Chevrolat, 1836, from China and Laos, and a proposed new species-group (Coleoptera: Chrysomelidae: Chrysomelinae), Zootaxa 5150 (1), pp. 111-120 : 112

Gonioctena (Gonioctena) kanfani species-group

Diagnosis. Body length 5.6–8.9 mm, oblong-ovate, and moderately convex. Ground color reddish-brown to coppery-brown, with a metallic lustre on the dorsal surface. Pronotal disc unicolorous or with nine black spots (sometimes partly fused). Elytra coppery-brown to greenish-black with black spots on the humeri, surrounded by yellowish-brown circles, which may be irregularly outlined. Elytra striate, but striae partially or entirely irregular, sometimes doubled. Median lobe variable in shape but apex of the flagellum trifurcated. The most consistent characteristics that differentiate this species-group from other taxa are the elytral markings and trifurcated flagellum of the male genitalia.