480 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iis 



41. Eurytoma brevivena Biigbee 



Map 20 

 Eurytoma brevivena Bugbee, 1958a, p. 198. 



Types: 13 females and 1 male; holotype female in the U.S. National 

 Museum (USNM no. 66032) ; paratypes in Bugbee collection, Mead- 

 ville, Pa. 



Type locality: Grand Canyon, Ariz., collected Jan. 26, 1920, A. C. 

 Kinsey. 



Distribution: Known only from the type locality. 



Host: Disholcaspis quercus-globulus (Fitch) on Quercus gambelii 

 (Bugbee, 1958). 



Remarks: The host of this species is probably not the species indi- 

 cated on the labels, because D. quercus-globulus does not extend 

 westward to Arizona according to Weld in Muesebeck and others 

 (1951). Its host will probably be found to be a western species of the 

 genus Disholcaspis associated with Quercus gamhelii. 



The strong striations on the lower face converging on the clypeus, 

 the short postmarginal vein that averages about half the length of the 

 marginal, and the wide median furrow on the propodeum that narrows 

 ventrally, are additional characteristics of this species. 



42. Eurytoma obtusiventris Gahan 



Map 20 



Eurytoma obtusiventris Gahan, 19.34, pp. 116-118. — Hughes, 1934, pp. 119-122. — ■ 

 Breland, 1939, p. 725.— Uhler, 1951, p. 40.— Judd, 1953, p. 296.— Peck, 1951, 

 p. 577.— Miller, 1959b, pp. 246-251. 



Types: Holotype female, no. 49893, and 57 paratype females in 

 the U.S. National Museum, Washington, D.C. 



Type locality: Ithaca, N.Y., collected and reared by G. F. Hughes 

 in 1930. 



Distribution: United States: New York, Michigan, Indiana, Mas- 

 sachusetts, Louisiana, Kansas, Ohio. Canada: Ontario. 



Host: Eurosta solidaginis Fitch on Solidago species (Gahan, 1934). 



Remarks: No males have appeared in any of the series of E. 

 obtusiventris from the more northern states (New York, Michigan, 

 Indiana) and southern Canada. The females, therefore, must be 

 parthenogenetic. However, the series reared from Tephritis {—Neo- 

 tephritis) Jlnalis (Loew) on Helianthus species from Columbus, Miss., 

 by Breland (1939) and determined by Gahan as E. obtusiventris, 

 does contain several males. I have examined some of the Breland 

 specimens and have included them in the succeeding new species. 



Characteristics that separate this species from the next one, in 



