Proceedings of 

 the United States 

 National Museum 



SMITHSONIAN INSTITUTION • WASHINGTON, D.C. 



Volume 116 1965 Number 3503 



CONTRIBUTIONS TO THE KNOWLEDGE OF 



THE HEMEROBIIDAE OF WESTERN NORTH AMERICA 



(NEUROPTERA) 



By Waro Nakahara 



Introduction 



Dr. Charles P. Alexander [A] amassed a fine collection of the 

 Hemerobiidae during his sixteen entomological expeditions to various 

 parts of western North America, and this, together with the addi- 

 tional material of nearly similar magnitude belonging to the United 

 States National Museum [USNM], forms the basis of the present 

 paper. Forty species recognized in the entire material are docu- 

 mented, including five species that are described as new and another 

 species that also may be new but is left unnamed for the present. 



The geographical area covered is west of the 100th meridian in the 

 United States, British Columbia, Alberta, and Yukon in Canada, and 

 Alaska. Localities by states and provinces not previously recorded 

 are marked with asterisks. The reference to the original description 

 is given for each species and genus; the complete synonymy is to be 

 found in Carpenter (1940). 



Carpenter recognized 50 species of the Hemerobiidae as occurring 

 in the entire Nearctic region. Later, Gurney (1948) and Parfin (1956) 

 each added two species, and Nakahara (1960), one more. The addi- 



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