RHETUS Cramerii.
Generic Character.
Larva and Pupa unknown.
Wings triangular; the posterior lengthened and rather acutely tailed. Antennæ with the club linear-fuciform. Palpi cylindrical, elongate, porrect, incurved, remote, naked; the second joint remarkably long. Anterior feet in the male short and very hairy; in the female longer, naked, and furnished with minute claws. Wings, when at rest, horizontal.
Types.—Pap. Rhetus. Periander.—(Cramer.)
Specific Character.
Wings black, with two white subhyaline bands, both sides alike; posterior wings elongated, vivid blue, acutely tailed, with a transverse sub-lunular band at the anal angle.