No. 22.] HYMENOPTERA OF CONNECTICUT. 2O3 



Stramineous; wings hyaline, areolet quadrate. Length 



3 mm mamestrae 



4. Fore and mid coxae at least mostly stramineous 5 



Fore and mid coxae as well as hind coxae mostly black or 



blackish; tegulae stramineous; first dorsal abdominal plate 

 finely sculptured; color of legs and length as in Microgaster 

 brittoni waldeni 



5. Hind coxae stramineous or yellowish beneath 6 



Hind coxae black or blackish beneath. Length 3.5 mm., .actuosus 



6. Scape blackish; length 2.5 mm.; body mostly black; antennae, 



labrum, and mandibles blackish, palpi whitish; legs red- 

 dish, coxae, except at apex, hind metatarsus, and all claws 

 blackish; tegulae stramineous; wings subhyaline, areolet 



quadrate ceratomiae 



Scape yellowish hyphantriae 



7. Tegulae and coxae mostly black or blackish 8 



Tegulae and coxae mostly or at least partly reddish, stra- 

 mineous or yellow; scape yellowish; second dorsal abdom- 

 inal segment not rugose; body mostly black; first dorsal 



" abdominal segment laterally, and first, second, and third 

 ventral segments, and second and third dorsal abdominal 

 segments mostly yellowish or stramineous; antennae brown; 

 legs stramineous to brownish, except hind tarsi, which are 

 dark brown. Length 3 mm varicolor 



8. Stigma entirely blackish; legs colored as in Microgaster brittoni. 



Length 2.5 mm quintilis 



Stigma only partly blackish, the greater part of basal half 

 stramineous; legs, except coxae, which are black, and tro- 

 chanters, tarsi, great part of basal half of mid and hind 

 femora, which are brown, stramineous. Length 2.5 mm. 



melianae var. 



M. maturus Weed. 



°M. ceratomiae Riley. 



Parasitizes the larva of the four-horned sphinx {Ceratomia 

 amyntor = C. quadricornis) which feeds upon the elm. It is 

 also on record as a parasite of a Smerinthid larva. The cocoons 

 are as in actuosus but ribbed. 



°M. mamestrae Weed. 



Parasitic upon the painted mamestra {Mamestra picta), 

 the larva of which is especially destructive to cabbages and beets, 

 though it eats a great many other plants. The cocoons are red- 

 dish brown and ribbed. 



