Oriens, the dartlets, is a genus of grass skipper butterflies in the subfamily Hesperiinae (Hesperiidae). The genus was described by William Harry Evans in 1932. The six species, all of which look very similar to each other and are often only reliably identifiable through the examination of the male genitalia.
Species Oriens alfurus (Plötz, 1885) – Celebes Oriens californica (Scudder, 1872) – Philippines Oriens fons Evans, 1949 Philippines Oriens paragola (de Nicéville & Martin, ) – Sumatra Oriens augustula (Herrich-Schäffer, 1869) – Fiji Oriens goloides (Moore, ) – Ceylon, India, Nepal, South China to Malay Peninsula. Oriens gola (Moore, 1877) – Ceylon, South India, Kumaon, Sikkim to Assam, Burma, Vietnam Oriens concinna (Elwes & Edwards, 1897) – India (Shevaroys, Nilgiris, Palnis, Coorg) Seitz, A., 1912-1927. Die Indo-Australien Tagfalter. Theclinae, Poritiinae, Hesperiidae. Grossschmetterlinge Erde 9: 799-1107, pls. 138-175.
Biology The larvae feed on grasses including Imperata, Oryza, and Paspalum.Robinson, G. S., P. R. Ackery, I. J. Kitching, G. W. Beccaloni & L. M. Hernández, 2010. HOSTS - A Database of the World's Lepidopteran Hostplants. Natural History Museum, London. nhm hosts
References
Oriens Evans, 1932" at Markku Savela's Lepidoptera and Some Other Life Forms