Abstract
Gronotoma hiranoi n. sp. is described and illustrated. This species is distinguishable from other members of the genus Gronotoma by the external characters of the head and mesosoma. Gronotoma adachiae BEARDSLEY, which has been recorded in Hawaii, was discovered in Indonesia, and is redescribed and illustrated. Both eucoilids are parasitic on beanflies (Diptera : Agromyzidae) including the major soybean pest, Melanagromyza sojae (ZEHNTNER) in Indonesia. Adults of the two Gronotoma species emerged from host puparia.