No. 22.] HYikiENOPTERA OF CONNECTICUT. 467 



light ochreous, mouth-parts nearly white, mandibles shining 

 brown at tips ; mesonotum transversely shagreened, scutel finely 

 coriaceous, metathoracic carina delicate; legs yellowish white, 

 except the hind coxse, which are brownish near the base ; abdo- 

 men elliptical, its petiole cylindrical, rugose, basal half of dorsum 

 of abdomen with a bright straw-colored blotch bounded by brown 

 and ending posteriorly in a straight transverse line, abdomen 

 beneath with a longitudinal honey-yellow stripe, wider anteriorly 

 than posteriorly. 



Bred from larvae of Proteoteras ccsculaita. 



Euplectrus Westwood. 

 °E. comstocki Howard. Howard, Insect Book, p. 58, Fig. 

 32 ; p. 58, Fig. 33 ; p. 59, Fig. 34. 



Male: length 1.8 mm.; mostly black; antennae with third to 

 seventh joints inclusive oval, subequal in length; head smooth, 

 antennae ochreous ; mesonotum with many transversely elongate 

 punctuations and with a delicate longitudinal carina; scutel and 

 remainder of thorax smooth; middle tibial spur as long as first 

 and second tarsal joints combined; legs ochreous, veins fuscous; 

 abdomen with an ochreous area of varying size. 



Parasitizes the cotton worm {Aletia xylina) and the fall army 

 worm {Laphygma frugiperda). 



°E. frontalis Howard. 



Female : length 2 mm. ; differs from catocalce chiefly as fol- 

 lows : yellow spot on the face including the bases of the an- 

 tennae, cheeks below this point black to the base of the mandi- 

 bles, pronotum punctate except at its posterior border, mesonotum 

 coarsely shagreened, its median carina faint, metascutel longi- 

 tudinally striate. 



Reared from a noctuid larva on walnut. 



°E. catocalae Howard. 

 Female and male: length 2.3 mm.; differs from comstocki 

 chiefly as follows : larger ; face with a yellow spot extending to 

 base of antennae; metascutel longitudinally striated; abdomen in 

 male with an ochreous blotch occupying all of the anterior half 

 of the dorsum, beneath yellow except at its tip; abdomen in 

 female above with an ochreous spot, oval in form, on the anterior 

 center, bounded on all sides by dark brown beneath as in the male. 



