REVISION MALACOSOMA HUBNER IN NORTH AMERICA 293 



Pteromalidae : Dirhicnus sp. This species was found in only two 

 collections (both M. constrictum from California). Dr. Burks had not 

 received it for identification before, and he does not know what its 

 biological relationships may be. 



Encyrtidae: Ooencyrtus clisiocampae (Ashmead). This species was found 

 in 35 collections, and was widely distributed, although it was most 

 common in the more southern states. Dr. Burks says that in his opinion 

 this species is a secondary parasite. Langston (1957) reported Ooencyrtus 

 sp. from Malacosoma in the San Francisco Bay area of California, and 

 stated that it was not Ooencyrtus clisiocampae (Ashmead). All of our 

 Ooencyrtus were identified by Dr. Burks as Ooencyrtus clisiocampae (Ash- 

 mead), but it seems likely that our specimens from the San Francisco 

 Bay area are the same as Langston's Ooencyrtus sp. In this case as in the 

 similar Telenomus case (see above), we can only accept the opinion of 

 the specialists who work with these groups, and point out that differ- 

 ences of opinion exist. 



Malacosoma disstria Hiibner 



Tetrastichus malacosomae: Coll. No. 178 (Two Hills, Alberta). 

 Ooencyrtus clisiocampae: Coll. No. 406 (Georgetown, Tex.). 

 Ablerus clisiocampae: Coll. No. 406 (Georgetown, Tex.), 

 Malacosoma constrictum constrictum (Henry Edwards) 



Tetrastichus malacosomae: Coll. Nos. 42 (Pacheco Pass, Calif.); 110 (Priest 



Valley, Calif.). 

 Dirhicnus sp.: Coll. No. 1 1 1 (Woodlake, Calif.). 

 Malacosoma constrictum austrinum Stehr 



Tetrastichus malacosomae: Coll. Nos. 26 (Santa Ysabel, Calif.); 221 



(Temecula, Calif.). 

 Ooencyrtus clisiocampae: Coll. No. 26 (Santa Ysabel, Calif.). 

 Dirhicnus sp.: Coll. No. 26 (Santa Ysabel, Calif.). 

 Malacosoma tigris (Dyar) 



Ooencyrtus clisiocampae: Coll. Nos. 223 (Garner State Park, Tex.); 226 



(Leakey, Tex.); 228 (Leakey, Tex.); 257 (Tijeras, N. Mex.). 

 Ablerus clisiocampae: Coll. No. 223 (Garner State Park, Tex.). 

 Malacosoma americanum (Fabricius) 



Tetrastichus malacosomae: Coll. Nos. 401 (Dover, Aik.); 404 (Thorndale, 



Tex.); 412 (Ken'vUle, Tex.); 426 (Corning, Kan.); 427 (Hutchinson 



Co., S. Dak.); 428 (Pickstown, S. Dak.); 431 (Tunerville, S. Dak.). 

 Ooencyrtus clisiocampae: Coll. Nos. 225, 227 (Leakey, Tex.); 401 (Dover, 



Ark.); 404 (Thorndale, Tex.); 408 (Inks Lake State Park, Tex.); 



422 (Guthrie, Okla.); 427 (Hutchinson Co., S. Dak.). 

 Telenomus clisiocampae: Coll. Nos. 401 (Dover, Ark.); 422 (Guthrie, Okla.); 



428 (Pickstown, S. Dak.); 431 (TunervUle, S. Dak.). 

 Ablerus clisiocampae: Coll. Nos. 401 (Dover, Ark.); 408 (Inks Lake State 



Park, Tex.). 

 Anastatus sp.: Coll. No. 408 (Inks Lake State Park, Tex.). 



279-280—68 22 



