A Discussion of the Eurytoma Rhois Complex with a Description of a New Species (Eurytomidae)1

Abstract

The vast majority of the Eurytomidae are parasitic, but phytophagy appears in at least two of the tribes. The Isosomini are primarily addicted to various species of grasses while within the Eurytomini the relatively few phytophagous species show a more varied choice of plant hosts (host data, Gahan 1922 and Bugbee 1936). In the latter tribe some twelve or more species are recorded from seeds, among them Eurytoma rhois Crosby (1909) from the seeds of Rhus typhina L. (staghorn sumac). Since the original description appeared it has been mentioned only twice in the literature (Gahan 1922 and Bridwell 1923).