Chaetocnema (Chaetocnema) laotica Medvedev, 2009

Ruan, Yongying, Yang, Xingke, Konstantinov, Alexander S., Prathapan, Kaniyarikkal D. & Zhang, Mengna, 2019, Revision of the Oriental Chaetocnema species (Coleoptera, Chrysomelidae, Galerucinae, Alticini), Zootaxa 4699 (1), pp. 1-206 : 71-73

22. Chaetocnema (Chaetocnema) laotica Medvedev, 2009

Chaetocnema laotica Medvedev, 2009: 48 . TL: Laos. TD: Moscow, Russia, L. Medvedev collection.

Distribution: Laos, Vietnam ( Medvedev, 2009).

Host plants: Unknown.

Description (after Medvedev, 2009): Dark or black green, antennae fulvous with infuscate apical segments, all femora black, but fore- and middle ones with fulvous apices, tibiae and tarsi fulvous.

Body comparatively narrow. Head densely microsculptured, with a few punctures near eyes, interantennal ridge narrow and convex. Antennae almost reach middle of elytra, antennomeres 2–10 subequal, preapical antennomeres about 2.5 times as long as wide. Prothorax 1.5 times as wide as long, lateral margins straight, anterior angles oblique and slightly thickened, surface microsculptured, with dense and deep punctures, which are smaller than those on elytra. Scutellum broader than long, impunctate. Elytra 1.5 times as long as wide, broadest in middle, basally as wide as base of pronotum, humeral tubercle feeble. Elytra shining, with regular rows of large punctures, interstices flat, very finely punctate. Wings strongly reduced, not longer than elytra. Length of body 1.8–2.2 mm.

Remarks: We could not access the types, despite our best efforts. Illustration was not provided with the original description of this species by the author, however, based on the author’s description, this species resembles C. kingpinensis and C. baoshanica sp. nov. in having feeble humeral calli and fairly long antennae. It may be distinguished from the latter two species by the wider pronotum and the green to greenish blue metallic luster on dorsum.