Alasea corniculata was described by Rota in 2008 (see reference to original description below) from specimens collected in Costa Rica. The holotype is held by INBio. This is a small moth with forewing length of about 5 mm. It has dark forewings with iridescent specks of scales and a yellow-orange hindwing.
This species is currently known only from Costa Rica.
A. corniculata lives in tropical rain forests.