opacus

Opacus denotes shady, with reference to a pleasant and beneficial coolness, in opp.

Niger opacus lvis, clypeo emarginato, thorace postice rotundato, elytrorum lateribus humeralibus haud incisis.

Exscutellatus niger opacus, capite subcornuto, pedibus intermediis dilatatis et incisis.

The ancestral stock from which A. opacus developed in Micronesia seemingly reached the area from Melanesia.

The structure of its wing resembles that of A. opacus, but the primaries are more rounded.