LAEVAE OF NORTH AMERICAN BEETLES OF THE 

 FAMILY CLERIDAE. 



By Adam G. Boving and A. B. Champlain, 



Of the Bureau of Entomology, United States Department of Agriculture. 



INTRODUCTION. 



The insects of this family are with few exceptions beneficial and 

 of some economic importance in the preservation of forest trees be- 

 cause they in all stages feed on destructive wood and bark boring 

 beetles. 



The larval stages of the numerous genera and species of North 

 American Cleridae have not been systematically described or figured, 

 and but little has been published on their general habits and seasonal 

 history in this country. 



The present publication is a contribution from the Division of 

 Forest Insect Investigations, Bureau of Entomology, United States 

 Department of Agriculture, and has been worked out according to 

 suggestions of Dr. A. D. Hopkins, forest entomologist in charge of 

 forest insect investigations. 



It consists of two independent parts. The first part, by A. G. 

 Boving, deals with the morphology and taxonomy of the larvae of 

 North American Cleridae and is mainly based on the valuable ma- 

 terial, which has been accumulated in the collections in the office of 

 the Forest Entomologist in the United States National Museum, 

 Washington, District of Columbia. The second part, by A. B. Cham- 

 plain, now Curator of Insects, Pennsylvania Bureau of Plant Indus- 

 try, Harrisburg, Pennsylvania, deals with the general habits and 

 seasonal history of the Cleridae from notes on file in the same office, 

 critically considered and considerably added to by pereonal observa- 

 tions of the author. 



PART 1. 



A. BRIEF CHARACTERIZATION OF THE LARVAE OF THE FAMILY CLERIDAE. 



Legs with fused tarsus and claw. Body straight with dorsal and 

 ventral surface equally long or nearly so. Intersegmental membranes 

 present. Tenth abdominal segment developed as a locomotory organ, 

 extending from the ventral side of the ninth abdominal segment. No 



Proceedings U, S. National Museum, Vol. 57— No. 2323. 



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