Taxonomic history

Amasa tropidacron Smith, Beaver & Cognato 2020 (in Smith et al. 2020b): 44.

Diagnosis

2.5−2.8 mm long (mean = 2.65 mm; n = 2); 2.5−2.54 times as long as wide. This species is distinguished by the pronotum appearing basic (type 2) when viewed dorsally, anterior margin serrate; elytral declivital surface glabrous, smooth, strongly shining; small size; declivital face flattened; and interstriae 1 carinate from apex to near midpoint of declivity; striae 1−3 approximately equidistant.

May be confused with

Amasa concitata, A. gibbosa, A. lini, and A. youlii

Distribution

Japan, Vietnam

Host plants

unknown (Smith et al. 2020b)

DNA data

specimens not available for sequencing