ICHNEUMON-FLIES OF AMERICA: 1. METOPIINAE 153 



2. Seticornuta apicalis (Cresson), new combination 



Exochus apicalis Cresson, 1864, Proc. Ent. Soc. Philadelphia, vol 3, p. 285; 

 V"=?. Type: 9 , Illinois (Philadelphia). 



Front wing 4.7 to 5.9 mm. long; flagellum with 21 to 25 segments; 

 lateral longitudinal carina of propodeum between spiracle and apical 

 carina moderately sharp; front spur of middle tibia about 1.25 as 

 long as hind spur. 



Black. Face, cheek, mouth parts, and broad complete orbit that is 

 wide enough dorsally to reach lateral ocellus, yellowish and fulvous, 

 the yellow mostly on front oribit and upper part of face ; central part 

 of face blackish to light brown ; antenna brown ; tegula yellow, with a 

 broad, transverse, postmedian brown area; legs colored either as in 

 Seticornuta terminalis or more commonly ferruginous beyond coxae, 

 the tibial spurs whitish; abdomen beyond fifth segment ferruginous. 



Specimens (20 cf, 259): From District of Columbia; Florida (Lake 

 City and Monticello); Georgia (Thomasville) ; Illinois; Maryland 

 (Takoma Park); Michigan (Genesee Co.); Mississippi (Wiggins); 

 Nebraska; New Jersey (Moorestown) ; New York (Poughkeepsie) ; 

 Ohio ; Ontario (Angus and Vineland Station) ; Rhode Island (Westerly) ; 

 South Carolina (McClellanville) ; and Virginia (Great Falls) . 



The specimens were collected in May, June, and July, and there is 

 one collection in August. Early and late seasonal records of interest, 

 are: May 9 at Monticello, Fla.; May 11 in Genesee Co., Mich.; 

 May 15 at McClellanville, S. C; June 1 at Wiggins, Miss.; June 10 

 at Westerly, R. I.; July 28 at Angus, Ont.; July 31 at Vineland Sta- 

 tion, Ont.; and Aug. 2 at Poughkeepsie, N. Y. 



A large portion of the specimens were reared, as follows: 4 c? , from 

 Acrobasis sylviella on Ostrya virginiana, Vineland Station, Ont., 

 July 29, 30, and 31, 1940, W. L. Putman. 9, from Acrobasis betulella, 

 Angus, Ont., July 28, 1939. d 1 , from Acrobasis indigenella, Monti- 

 cello, Fla., May 13, 1913, John B. Gill, d\ 9, from Acrobasis indi- 

 genella, Thomasville, Ga., June 16, 1916, and no date, W. F. Turner. 

 8cf, 109, from Acrobasis juglandis, Monticello, Fla., May and June, 

 1945, A. M. Phillips, cf, from Acrobasis juglandis, Lake City, Fla., 

 June 1905. 9, from Acrobasis juglandis, Wiggins, Miss., June 3, 1929, 

 J. P. Kilanko. c?,from Acrobasis caryivorella, Monticello, Fla., 1941, 

 W. C. Pierce. 



This species occurs in the Austro riparian and Carolinian faunas. 

 Adults occur in late spring to mid-summer. Species of Acrobasis 

 serve as hosts. 



