No. 22.] HYMENOPTERA OF CONNECTICUT. 267 



the female black at base, apically reddish like most of the rest of 

 the abdomen ; male with the hind coxae yellowish, and the ab- 

 domen reddish with more or less extensive black stains except 

 the first segment, which is mostly black ; mid femora reddish in 

 the female, yellowish in the male. 



Parasite of Malacosoma americana, the American tent- 

 caterpillar. 



New Haven, 12 April, 191 1 (A. B. C). 



C. (A.) fugitivus (Say). 



Hosts of this species are the Io moth (Hyperchira io), Hy- 

 phantria textor, (Clisiocampa) Malacosoma americana, the for- 

 est tent-caterpillar (M. disstria), (Pyrantels) Vanessa cardui, 

 (Apatura) Chlorippe celtis, (A.) C. clyton, Pholisora catullus, 

 Euchcetes egle, Hemileuca maia, the Bombycids Anisota 

 rubicunda, A. senatoria, A. stigma, A. virginiensis, the Microlep- 

 idopteron Mineola indigenella and Ephestia kuehniella. 



The many destructive secondary parasites that attack this, 

 species tend to impair its usefulness ; in spite of these, however, 

 it is a very useful insect. 



C. (A.) annulipes (Cresson). 

 Recorded as a parasite of Plutella cruciferarum. 



C. (A.) pilosulus (Provancher). 

 New Haven, 8 August, 1905 (W. E. B.). 

 C. (A.) acronyctas (Ashmead). 

 Parasite of Apatela oblinita. 



C. (A.) cedemisiae (Ashmead). 



Parasite of the red-humped apple tree caterpillar, Schizura 

 concinna, from which it was reared 22 September, 1905, New 

 Canaan (B. H. W.). 



C. (A.) pallipes (Provancher). 



Subgenus Hyposoter (Foerster) Viereck. 



*Campoplex (H.) diversicolor Viereck. 

 Female : length 5.5 mm. ; lateral ocelli nearer the eye than the 

 anterior ocellus ; clypeus mostly yellowish ; scape uniformly dark 

 stramineous in front, pedicel paler in front than the scape ; fore 

 and mid coxae yellowish, hind legs with coxae, trochanters and 

 femora more or less reddish, their tibiae reddish brown, pale at 



