REVISION MALACOSOMA HUBNER EST NORTH AMERICA 299 



Malacosoma californicum pluviale (Dyar) 



Chalcididae: Spilochalcis albijrons (Walsh): Coll. No. 344 (Moscow, Ida.), 



Ex Hyposoter Jugitivus pacificus . 

 Pteromalidae: Habrocytus sp.: Coll. No. 345 (Superior, Mont.), Ex Rogas sp. 

 Eulophidae: Tetrastichus coerulescens Ashmead: Coll. No. 345 (Superior, 

 Mont.), Ex Rogas sp. 

 Malacosoma californicum lutescens (Neumoegen and Dyar) 



Pteromalidae: Habrocytus sp.: Coll. No. 351 (Townsend, Mont.), Ex 



Hyposoter Jugitivus pacificus. 

 Eulophidae: Tetrastichus coerulescens Ashmead: Coll. Nos. 351 (Townsend, 

 Mont.), Ex Hyposoter Jugitivus pacificus; 353 (Townsend, Mont.), Ex 

 Hyposoter Jugitivus pacificus and/or Rogas sp. 

 Intermediate population between M. calijornicum pluviale (Dyar) and M. 

 calijornicum lutescens (Neumoegen and Dyar) 

 Chalcididae: Spilochalcis leptis Burks: Coll. No. 347 (Whitehall, Mont.), Ex 

 Hyposoter Jugitivus pacificus. 

 Malacosoma calijornicum Jragile (Stretch) 



Pteromalidae: Catolaccus aeneoviridis (Girault): Coll. No. 236 (Verkin, 

 Utah), Ex Rogas sp. 

 Malacosoma incurvum incurvum (Henry Edwards) 



Pteromalidae: Habrocytus sp.: Coll. No. 249 (Clifton, Ariz.), Ex Rogas sp. 



Larval and Pupal Parasites (Diptera) 



Twelve different species of tachinids were reared from Malacosoma 

 during this study. Parasites of the genus Lespesia {— Achaetoneura) 

 were most common, the commonest species being Lespesia archippivora 

 (Williston). Another species, Lespesia ciliata (Macquart), has pre- 

 viously been recorded only from saturniids of the genus Hyalophora 

 according to Beneway (1963). The remaining specimens of Lespesia 

 have been identified as L.Jrenchii (Williston), commonly recorded from 

 Malacosoma. 

 Malacosoma disstria Hiibner 



Lespesia Jrenchii (Williston): Coll. No. 178 (Two Hills, Alberta). 

 Malacosoma constrictum constrictum (Henry Edwards) 



Archytas lateralis (Macquart): Coll. No. 110 (Priest Valley, Calif.). 

 Malacosoma constrictum austrinum Stehr 



Chaetogaedia sp. near monticola (Bigot): Guatay, San Diego Co., Calif., 

 larva collected 18 May 1960, R. C. Hall. 

 Malacosoma tigris (Dyar) 



Euphorocera tachinomoides (Townsend): Coll. No. 226 (Leakey, Tex.). 

 Malacosoma americanum (Fabricius) 



Euphorocera tachinomoides (Townsend): Coll. Nos. 225 (Leakey, Tex.); 411 

 (Fredericksburg, Tex.). 



Exorista mella (Walker): Coll. No. 411 (Fredericksburg, Tex.); River Falls, 

 Wis., larvae collected 9 June 1957, F. W. Stehr. 



