NO. 3533 CHALCID WASPS OF GENUS EURYTOMA — BUGBEE 465 



22. Eurytoma eragrostidis (Howard) 



Map 8 



Eurytomocharis eragrostidis Howard, 1896, p. 21. — Girault, 1916, pp. 337-341. — 



Gahan, 1922, pp. 42, 51. 

 Eurytoma eragrostidis Peck, 1951, p. 576. 



Types: Female holotjpe no. 2754, U.S. National Museum, Wash- 

 ington, D.C. 



Type locality: Lafayette, Ind. 



Distribution: United States: Indiana, Illinois. 



Host: Reared from Eragrostis poaeoides by F. M. Webster in 

 September 1885 and March 1886 (Howard, 1896). Agrostis alba 

 (Peck, 1951). 



Remarks : This species was shifted to Eurytoma from Eurytomocharis 

 by Peck (1951). It shows some affinities with E. pachyneuron and 

 E. neomexicana in possessing a deep, narrow, complete median furrow 

 on the propodeum, and in the lack of lateral compression of the 

 triangular-shaped abdomen as viewed in cross section. Distinguishing 

 features include: reduced umbihcate punctures on the thorax; rounded 

 propodeum without lateral areas; very scanty, if any, sculpturing on 

 the ventrolateral surface of the sixth tergum and the all-yeUow legs 

 and coxae. 



23. Eurytoma neomexicana Girault 



Map 9 



Eurytoma neomexicana Girault, 1920, p. 205. — Brandhorst, 1943, pp. 169-170. — 

 Peck, 1951, p. 577. 



Types: 3 females and 1 male, no. 20627, U.S. National Museum, 

 Washington, D.C. 



Type locahty: Koebele, N. Mex. 



Distribution: United States: New Mexico, Kansas, Nevada, Colo- 

 rado. Canada: Saskatchewan, Quebec. 



Host: Reared in connection with Isosoma (Girault, 1920). Sider- 

 anthus spinulosus (Brandhoi'st, 1943). 



Remarks: Brandhorst (1943) remarks that "Most every seed of the 

 plant {S. spinulosus) has been destroyed by this phytophagous 

 eurytomid." 



The reduction in the prominence of the umbilicate punctures on 

 the head and thorax, the deep reddish-brown color, the noticeably 

 clavate antenna, the broad dorsal valves of the female genitalia, and 

 the short first segment of the flagellum that is approximately equal 

 to the pedicle from a dorsal view may be added to the characteristics 

 mentioned in the key. 



219-931—67— — 3 



