A REVISION OF NORTH AMERICAN CHRYSOBOTHRINI 143 



Manitoba: Victoria Beach, August 8 (G. S. Brooks). 

 Ontario: Macdiarmid, July 17, 1922 (N. K. Bigelow). 



Recorded in the literature from: 



Connecticut: Cornwall, July 8 (C. A. Frost). 



Maine: Monmouth (C. A. Frost). 



Manitoba: Le Pas (C. A. Frost). 



Michigan: Lake Superior (C. A. Frost). 



New Yoi;k: Catskill Mountains; Minerva July 20, 1925 (C. A. Frost). Wallface 



Mountains, July (A. Nicolay). Fort Montgomery, July; Bear Mountains, 



July (Schott). 

 Nova Scotia: Port Maitlancl, August 2, 1910 (W. Rieff). 

 Pennsylvania: Montebello, reared (Guyton and Knull). 

 Vermont: No definite locality (C. A. Frost). 



Hosts. — Knull (1922) records this species as working in scars and 

 injuries on living hemlock (Tsuga canadensis (Linnaeus) Carriere) 

 in Pennsylvania, the larva working beneath the bark and pupating in 

 <he sapwood, and it has been reared from Norway spruce (Picea 

 dbies (Linnaeus) Karsten) in Connecticut by K. B. Friend. Frost 

 (1910) records the adults on beech {Fagus grandifolia Ehrhart) in 

 Maine. Morrison found a specimen on pine (Pinus sp.) in Massa- 

 chusetts, and Bigelow collected a large number of adults on balsam 

 fir (Abies balsamea (Linnaeus) Miller) and on white spruce (Picea 

 glauca (Moench) Voss) in Ontario. 



Very little variation was observed in the specimens examined ex- 

 cept in color, which varies in the depressions on the dorsal surface of 

 (he body from bright green to brownish cupreous, on the underside 

 of the body from purplish cupreous to a bronzy green with a distinct 

 cupreous tinge, and on the front of the head in the males from bright 

 green to bronzy green, with a more or less cupreous tinge similar to 

 that of the females. The prosternum is usually transversal, truncate 

 in front, but occasionally the anterior margin is broadly rounded and 

 deflexed at the middle. The emargination at the apex of the last 

 visible abdominal sternite in the female is variable in shape. The 

 length is from 12.5 to 16 mm. 



It is difficult to separate the cupreous-colored females of this species 

 from the females of dentipes, but the males are easily separated by 

 the genitalia and the dilation on the anterior tibia. In dentipes the 

 dorsal surface of the body is usually more opaque than in verdi- 

 gripennis. 



Mr. Bigelow collected nearly 100 specimens on balsam fir and 

 white spruce in Ontario, where both the green and the dark bronzy 

 specimens were found together, the bronzy form predominating. 



(61) Chrysobothris exesa LeConte 



(Fig. 58; fig. 119, E) 



CJiryso'bothris exesa LeConte, 1858, Acad. Nat. Sci. Phila. Proc. [10] : 68; 1858, 

 Acad. Nat. Sci. Phila. Jour. (ser. 2) 4: 84; 1859, Amer. Phil. Soc. Trans, 

 (n. s.) 11: 231; Gemminger and Harold, 1869, Cat. Coleopt, v. 5, p. 1425; 

 Horn, 1883, Amer. Ent. Soc. Trans. 10: 287; 1886, Amer. Ent. Soc. Trans. 

 13 : 95-96, pi. 4, figs. 125-129 ; Waterhouse, 1887, Biol. Cent.-Amer., Coleopt., 

 v. 3, pt. 1, p. 41; Kerremans, 18S2, Soc. Ent. de Belg. Mem. 1: 212; Cockerell, 

 1898, N. Mex. Agr. Expt. Sta. Bui. 28 : 152 ; Fall and Cockerell, 1907, Amer. 

 Ent. Soc. Trans. 33 : 180 ; Burke, 1918, Jour. Econ. Ent. 11 : 211 ; Van Dyke, 

 1918, Ent. News 29: 58; Chamberlin, 1926, Cat. Buprestidae North Amer., 

 p. 150; Obenberger, 1934, in Junk (pub.), Coleopt. Cat., pt. 132, p. 623; 

 Chamberlin, 1934, Pan-Pacific Ent. 10 : 39. 



