NO. 3533 CHALCID WASPS OF GENUS EURYTOMA — BUGBEE 461 



Host: Pachypsylla vesicula (Riley) on Celtis reticulata, C. occidentalis 

 and C. mississippiensis and P. mamma (Riley) on C. occidentalis. 



Remarks: Additional characteristics that will help to separate this 

 species from the succeeding one are the presence of only two tubercles 

 on the proximal end of the fulcra! plate; the shorter ninth tergum 

 that averages .14 mm. (.10-. 17) in length, and the yellow color of the 

 horizontal length of the dorsal valves. 



16. Eurytoma flavovultus Bugbee 



Map 8 

 Eurytoma flavovultus Bugbee, 1957, pp. 45-47. 



Types: 64 females and 25 males; holotype female, allotype male in 

 the U.S. National Museum (USNM 66038) ; paratypes in the U.S. 

 National Museum, University of Texas, and Cornell University, 



Type locality: Austin, Tex. 



Distribution: United States: Texas. 



Host: Pachypsylla venusta Osten Sacken on Celtis reticulata. 



Remarks: In addition to the characteristics listed in the key, the 

 longer ninth tergum averaging .22 mm. (.20-.25), the black horizontal 

 length of the dorsal valves, and the presence of three tubercles on 

 the proximal end of the fulcral plate, will help to distinguish this 

 species. 



17. Eurytoma bicolor Walsh 



Map 7 



Eurytoma bicolor Walsh, 1870, p. 298.— Ashmead, 1881b, p. 30.— Viereck, 1916, 

 p. 521.— Cole, 1931, p. 35.— Peck, 1951, p. 575. 



Types: 1 male and 2 females. Types lost. Neotypes: 29 females 

 and 6 males in the U.S. National Aluseum. 



Type locality: Probably from the vicinity of Rock Island, 111. 

 where Walsh did much of his collecting. Neotypes: Bloomington, 

 Ind. 



Distribution: United States: Connecticut, Washington, D.C., Iowa, 

 Virginia, Indiana, Ohio, Illinois. Canada: Ontario. 



Host: Galls on black oak (Walsh, 1870). Typha latijolia (cat- 

 tails) E. bicolor larva found in dried galls on stem (Cole, 1931). 

 Sphex={Isodontia) harrisi (Fernald) (Peck, 1951). Scolytus rugulosus 

 (Ratzeburg) (Peck, 1951). Aulacidea tumida (Bassett). Aulacidea 

 podagrae (Bassett). Eurosta solidaginis Fitch. 



Remarks: Some of the hosts listed for E. bicolor seem very doubtful, 

 especially Sphex harrisi (Fei-nald) and Scolytus rugidosus (Ratzeburg). 

 The hosts most commonly stated belong to the genus Aulacidea that 

 produce galls on several species of Lactuca. E. bicolor is quite variable. 



