Rienk de JONG National Museum of Natural History, Leiden REVISION OF THE ORIENTAL GENUS ODONTOPTILUM DE NICÉVILLE (LEPIDOPTERA: HESPERIIDAE: PYRGINAE) Jong, R. de, 2006. Revision of the Oriental genus Odontoptilum de Nicéville (Lepidoptera: Hesperiidae: Pyrginae). – Tijdschrift voor Entomologie 149: 145-159, figs. 1-54. [issn 0040- 7496]. Published 1 December 2006. The Oriental genus Odontoptilum, currently conceived as consisting of three species and five additional subspecies, is revised based on examination of all types and a study of recent material, particularly from the Philippines. As a consequence the number of species-group taxa is raised to ten, arranged in two genera (one new, Semperium for the species Pterygospidea leptogramma Hewitson, 1868), six species and four additional subspecies. Two species, O. corria sp. n. and O. abbreviata sp. n., and one subspecies, O. pygela tawita ssp. n., are described for the first time, and one species, O. helias (Felder & Felder), is raised from subspecies rank. O. angulata sinka Evans proved to be a junior synonym of O. helias helisa Semper. Four species are restricted to Wallacea. The genera are remarkable because of the strongly asymmetrical genitalia and the occurrence of three types of secondary sexual characters, one of which is described for the first time. R. de Jong, National Museum of Natural History, P.O. Box 9517, 2300 RA Leiden, The Netherlands. E-mail:
[email protected] Key words. – Hesperiidae; Odontoptilum; Semperium; secondary sexual characters; new taxa; taxonomy; distribution; Oriental region; Wallacea. The genus Odontoptilum as currently understood in Odontoptilum and that its isolated taxonomic posi- (Evans 1949, Maruyama 1991, Eliot 1992, Bridges tion is best reflected by placement in a new genus.