Locha hyalina is a moth species in the family Geometridae from Central and parts of South America. It was described by Dru Drury in 1782, but his name Phalaena diaphana was invalid as pre-occupied (see Eloria diaphana).
Upperside: Antennae pectinated (comb like). Thorax brown. Abdomen black, brown above. Wings diaphanous, the edges being bordered with black, a black band also crosses the anterior, from the anterior edges to the lower corners.
Underside: Tongue spiral. Breast and legs black. Abdomen grey. Anus yellowish. Wings coloured on this side as on the upper. Margins of the wings entire. Wingspan inches (44 mm).[1]