NO. 3533 CHALCID WASPS OF GENUS EURYTOMA — BUGBEE 435 



Eurytoma. Both men read the manuscript and made many con- 

 structive suggestions and criticisms. Their encouragement and help 

 are gratefully acknowledged. Dr. Henry Dietrich, Curator of 

 Insects, Cornell University, Ithaca, N.Y., extended to me many 

 courtesies while I studied the collection at Cornell. Frank Kurczewski 

 and Mi*s, Karlin Happe Grunau, former students at Allegheny College, 

 prepared some of the drawings. I am also indebted to my secretary, 

 Vanile Birkbeck, who typed the manuscript. 



Systematic Treatment 



In the systematic treatment the species occur in the same order as 

 in the key. The citation of tlie original description in addition to 

 important papers dealing with synonomy, host relationships, and 

 life-history data follow. No attempt has been made to be exhaustive 

 in the list of references, but some care has been taken to select those 

 that seem to contain the most important information. A citation 

 of the location of the types, type locality, distribution, and host 

 follow in order. 



The locality records for most of the species are shown on maps. 

 The records are based on specimens that were actually seen in the 

 various collections listed in a previous paragraph. 



Host Relationships 



Five orders of insects and six families of plants are represented 

 among the hosts (see appendix). Hosts for all but 2 of the 82 species 

 in the re^dsion are listed but should be accepted wAih. the reservations 

 stated in the next paragraph. About half (33 species) of the parasitic 

 species occur on hosts belonging to eight families of the order H3Tnen- 

 optera. Coleoptera (17 species, 6 families), Diptera (7 species, 4 

 families), Lepidoptera (4 species, 7 families), andHomoptera (3 species, 

 1 familjO follow in descending order. At least 12 species are phytoph- 

 agous, and one of these {Eurytoma pachyneuron) is suspected of being 

 both phytophagous and parasitic. The habits of the remaining species 

 are unlvno\\Ti or uncertain. 



Host data for many species are incomplete. In many cases the 

 host gaU from which the parasite emerged is indicated, but it cannot 

 always be assumed that this implies a direct host-parasite relation- 

 ship. In most galls there may be other primary and secondary 

 parasites of other genera, families, or orders and often inquilines, so 

 that unless the parasites have actually been observed to emerge from 

 the host larvae, the exact association is unknown. Often only the 

 plant species on which the wasp was caught or from which galls were 



