1922] Records of Hymenopterous Parasites in Pennsylvania. 99 



Gelis obscurus (Cress.) (Det. Cush.), Rockville, Pa. Parasite on 

 the eggs of Drassid spider. Both winged and wingless 

 forms were reared. 



Acroricnus junceus Cress. (Det. Vier.), Conewago, Pa., V-7. 

 Reared from nest of sohtary wasp on Juniperus. Also 

 reared from nest of Odynerus tigris, — V. A. E. Daecke. 



Itamoplex vinctus (Say). (Det. Cush.), Chambersburg, Pa., 

 Reared from cocoons of peach tree borer {Synanthedon 

 exitosa) j—'E. M. Craighead. 



Agrothereutes nuncius Say (Det. Vier.), Harrisbm-g, Pa. Very 

 common parasites in the cocoons of CaUosamia promethea. 



Lagarotis diprioni Roh. (Det. Cush.), Wyomissing, Pa. Reared 

 from the cocoons of Diprion lecontei. 



Chromocryptus nehraskensis Ashm. (Det. Cush.), Obelisk, Pa., 

 XI-18. Reared IV-21, from the cocoon of Tolype velleda, 



Amblyteles. Many species of this genus overwinter in the adult 

 stage in cracks in bark, in old borer cells in logs and 

 beneath stones. During the winter months they may be 

 found packed closely together in cells in logs, six to a dozen 

 specimens, sometimes one species, often a number of 

 species together. Many of the records show that they 

 are primary parasites of Lepidoptera, and usually emerge 

 after the host has entered the pupal stage. 



Amblyteles malacus Say (Det. Cush.), Harrisburg, Pa. Emerged 

 IV-18 from Arctiid pupa from beneath bark in old willow 

 log. Linglestown, Rockville, Harrisburg, Pa. Reared 

 from Arctiid pupae, — Kirk and Champlain. 



Amblyteles cincticornis (Cress.) (Det. Vier.), Enid, Pa. Reared 

 from moth pupa on cabbage. Adults collected in hiber- 

 nation. 



Amblyteles subcyaneus Cress. (Det. Vier.), Harrisburg, Pa. 

 Reared from Arctiid pupse from under bark of willow 

 log,— A. F. Satterthwait & W. S. Fisher. 



