Hispaniodirphia lemaireiana n. sp., a new saturniid from the Greater Antilles (Lepidoptera: Saturniidae, Hemileucinae)

Hispaniodirphia lemaireiana, n. sp., is described from the Dominican Republic on the island of Hispaniola. This is only the second described species of the Antillean endemic Hispaniodirphia, which is the only saturniid genus documented from the Greater Antilles. H. lemaireiana is distinguished from its sister species, H. plana, by several conspicuous differences. Several specimens of the new species are illustrated to show the phenotypic plasticity of the male. Male genitalia of both H. lemaireiana and H. plana are figured. The female and the biology of H. lemaireiana remain unknown, as does the systematic position of the genus within Hemileucinae. Its endemism and the supposed association of its caterpillars with pine trees should generate interest in identifying its sister group in continental America.