Many species hold hind legs elevated at rest. Formally, "Members of the family Heliodinidae are metallic-colored, mostly diurnal moths. They have the following combination of characters: (1) base of haustellum naked; (2) head scales closely appressed; (3) metallic-colored scaling covering body and wings; (4) apophyses anteriores with ventral branches originating from a medial band that forms a sclerotized bridge between them; (5) tegumen enormously expanded posteriorly with gnathos completely fused with it or absent; (6) pupa with stiff lateral and dorsal setae."
(1)