Amasa youlii Smith, Beaver & Cognato 2020 (in Smith et al. 2020b): 47.
2.9−3.0 mm long (mean = 2.93 mm; n = 3); 2.42−2.5 times as long as wide. This species can be distinguished by the pronotum appearing basic (type 2) when viewed dorsally, anterior margin serrate; elytral declivital surface smooth, moderately shining; small size; declivital interstriae setose, setae recumbent; declivital face flattened; and interstriae 1 weakly inflated from apex to near midpoint of declivity; striae 3 strongly displaced laterad, striae 1−3 not appearing equidistant.
Amasa concitata, A. gibbosa, A. lini, and A. tropidacron
unknown (Smith et al. 2020b)
Sequences available for COI and CAD.