ICHNEUMON-FLIES OF AMERICA: 1. METOPIINAE 151 



little shorter than hind spur; tarsal claws apparently simple; abdomen 

 approximately parallel-sided; first tergite broad at base, its spiracle 

 near its basal 0.3 and just above its lateral longitudinal carina; lateral 

 longitudinal carina of first tergite strong to apex; median longitudinal 

 carinae of first tergite strong basally, usually fading out beyond the 

 middle; second tergite without dorsal carinae; epipleurum of first 

 tergite vestigial or sometimes moderately large; epipleurum of second 

 and following tergites very wide, usually overlapping medially; 

 seventh tergite not retracted in either sex; female subgenital plate 

 concealed by the epipleura. 



The typical members of Seticornuta occur in the Indo-Australian 

 area and in Japan. In the Old World species the clypeal margin is a 

 little convex and the labrum concealed; the two Nearctic species 

 treated below seem referable to the genus, but differ from the gentoype 

 and its close relatives in having the apical margin of the clypeus shal- 

 owly concave, exposing a rather large labrum: 



Key to the Nearctic Species of Seticornuta 



1. Flagellum with 25 to 30 segments; yellowish orbital border very narrow or 

 interrupted above, not wide enough to touch lateral ocellus; hind femur 

 blackish (ferruginous in one specimen from Missouri). 



1. tcrminalis (Ashmead) 



Flagellum with 21 to 25 segments; yellowish orbital border moderately wide 



above, touching the lateral ocellus; hind femur blackish or ferruginous. 



2. apicalis (Cresson) 



1. Seticornuta terminalis (Ashmead), new combination 



Figures 174,a; 179,f 

 Triclislus terminalis Ashmead, 1896, Trans. Amer. Ent. Soc, vol. 23, p. 201; 

 d* . Type: o", Washington, D. C. (Washington). 



Front wing 3.7 to 5.5 mm. long; flagellum with 25 to 30 segments; 

 lateral longitudinal carina between spiracle and apical carina rather 

 weak; front spur of middle tibia about 1.3 as long as hind spur. 



Black. Face, cheek, mouth parts, and side of frons yellowish, the 

 clypeus, adjacent part of face, and sometimes cheek and mouth parts 

 covered by a transversely oblong brown area; yellow on frons moder- 

 ately wide below, tapered dorsally to a slender point; hind orbit often 

 narrowly fulvous, this hind orbital mark usually not joining frontal 

 orbital mark at top of eye, or when there is a junction it is narrow, 

 not wide enough to reach lateral ocellus; antenna brown; tegula yel- 

 low, with a broad, transverse, postmedian brown area; front leg 

 beyond coxa brownish to ferruginous; front and middle tibiae brown 

 to blackish, with a small dorsobasal pale mark; tibial spurs whitish; 

 abdomen beyond fifth segment ferruginous. 



One specimen from Missouri (c% Hannibal, June 8, 1948, H. Townes 

 (Townes)) has the legs beyond the coxae ferruginous, except that the 

 tibial spurs are whitish. It may represent a separate subspecies. 



451582 — 59 — —11 



