Review of Indian Oulema (s. str.) species with red pronotum and metallic elytra, with a note on the identity of cereal leaf beetles in India (Chrysomelidae, Criocerinae)

The Indian fauna comprises three species of Oulema (s. str.) with orange pronotum and black or blue elytra: Oulema duftschmidi (Redtenbacher, 1873), O. nigrofrontalis Takizawa and Basu, 1987, and O. rotundicollis (Jacoby, 1908). All three species are redescribed based on the study of the type specimens. The cereal leaf beetle Oulema duftschmidi is newly recorded in India. All published records of O. melanopus (Linnaeus, 1758) in India pertains to O. duftschmidi. Oulema nigrofrontalis Takizawa & Basu, 1987 is reported as a pest of maize for the first time. All three species are illustrated and diagnosed.