NORTH AMERICAN BUPRESTID BEETLES 67 



Michigan: Eagle Harbor; Marquette (Schwarz). 



Minnesota: St. Paul, Minneapolis, and Stillwater, reared (Ruggles). 



Mississippi: Natchez, May 31, 1909 (Tucker). 



Montana: No definite locality (Horn). 



New Jersey: Lakehurst, July 7 ( ). 



New York: Olcott, June-July, East Aurora, July 24, 1926 (Dietrich). Long 



Island ( ). 



North Carolina : No definite locality. 



Ohio: Cincinnati, June 13, 1905 ( ). 



Pennsylvania: Montgomery County, July 28, 1918 (Wenzel). Pittsburgh 



(Ehrmann). Germantown, June 1; Manada Gap, July 18, Harrisburg, 



May 31 (Knull). 

 Virginia: Penington Gap, July 4 (Hubbard and Schwarz). Peaks of Otter, 



July 26, 1906 (Palmer). 

 West Virginia: For! Pendleton. July 7 (Hubbard and Schwarz). French 



Creek, reared (Brooks). 

 Also recorded from various localities in Quebec and Ontario, Indiana, Kansas, 



northern Georgia, and many other localities not mentioned in the States 



listed above. 



Variations. — Rather uniform in size and coloration, and the elytra 

 rarely with a bluish or purplish tinge. The pronotum of the females 

 vary slightly from a reddish cupreous to a brownish or olivaceous 

 cupreous. 



Hosts. — This species does considerable damage by girdling twigs 

 and small limbs. It has been reared from Black Oak {Quercus 

 velutina La Marck) by Ruggles and Knull; White Oak {Quercus 

 alba Linnaeus) by Brooks; Beech {Fagus americana Sweet) by 

 Knull and Brooks, and from Chestnut (Castanea dentata (Marshall) 

 Borkhausen) by Brooks. It has been recorded from elm, but no 

 adults have been examined by the writer from that host. 



This species is considered quite variable by most writers, but in 

 fact, it is composed of a number of phytophagic forms, which are 

 distinguished in the field by their different habits and hosts, but the 

 adults are very difficult to separate, especially the males, which can- 

 not always be separated with certainty. The male genitalia of all 

 these forms are nearly identical and the forms are not entitled to 

 specific rank, but since their habits are different, and they seem 

 to prefer certain host plants, it seems advisable to retain them as 

 subspecies. In the distribution given by Chamberlin (1926), the 

 Florida records refer to cupricollfe Gory, and those from California 

 to angelicus Horn. 



The following key will assist students in separating most of the 

 adults, especially where the host is known, or both sexes are present. 



KEY TO THE SUBSPECIES 



1. Sexes (with exception of the head) nearly similar in coloration 2. 



Sexes dissimilar in coloration 3. 



