UNITED STATES NATIONAL MUSEUM BULLETIN 276 



A Revision of the Genus 



Malacosoma Hlibner in 



North America (Lepidoptera: 



Lasiocampidae): Systematics, 



Biology, Immatures, and 



Parasites 



FREDERICK W. STEHR 



and 



EDWIN F. COOK 



SMITHSONIAN INSTITUTION PRESS 

 CITY OF WASHINGTON 



1968 



