No. 22.] HYMENOPTERA OF CONNECTICUT. 45 1 



thorax, but as long as the head and thorax together; in the fe- 

 male the sides subparallel and the apical segment suddenly nar- 

 rowed to a point. 



Reared from eggs of Aletia argillacea and Odontota suturalis. 

 Other hosts are: Plusia brassicce, Heliothis arnvigera, Papilio 

 glaucus, (Pyrameis) Vanessa atalanta, (Limenitis) Basilarchia 

 ar chip pus, and (Pteronus) Pteronidea ribesi. 



Lathromeris Foerster. 

 °L. cicadae Howard. 



Female: length 0.74 mm.; antennae clavate, pedicel stouter 

 than the scaf>e and about half as long as the latter, club stouter 

 than the pedicel and as long as the scape, compact but rather 

 plainly divided into four subequal joints, and fusiform in shape; 

 stigmal vein extending into the wing at an angle of 45° from 

 the costa and not curved; abdomen acuminate and longer 

 than the head and thorax combined, mostly sordid yellowish in 

 color; occiput black; pronotum dusky black laterally; abdomen 

 dark at sides; antennae slightly dusky. Male somewhat shorter 

 than the female; abdomen with parallel sides and rounded at 

 tip ; antennae with a dark blotch at base of club. 



Reared from the eggs of the seventeen-year locust or peri- 

 odical cicada. This parasite passes through from two to three 

 generations in seven to eight weeks, the egg period of its host. 



TETRASTICHID^. 

 Key to Genera. 



1. Genera differing from Hyperteles 2 



Metanotum with a v-shaped median carina, more rarely with 

 a straight median carina; mesonotum without a median 

 grooved line; abdomen conically produced. Female: pro- 

 notum not conical; antennae lo-jointed, with two ring- 

 joints; abdomen two or more times longer than head and 

 thorax combined. Male: metanotum not punctate; abdo- 

 men neither cylindrical nor sculptured, its segments not 

 subequal, head and thorax smooth, not strongly sculptured 

 or closely punctate; hind wings not acutely pointed at 

 apex; antennae 9-jointed, with one ring-joint; wings fully 

 developed; abdomen much longer than the thorax. .Hjrperteles 



2. Scutel with two or four furrows 3 



Scutel without furrows; wings without a stigmal vein 



Anozus p. 452 



