NORTH AMERICAN BTJPRESTID BEETLES 93 



Illinois: Beverly Hills, June 15; Palos Park, June 17; Willow Springs, May 

 22 (B. Liljeblad). 



Iowa: Elma, June 14-30 ( )• 



Lake Okoboji, July 24 (L. Buchanan). 

 Manitoba: Winnipeg, July 1 (L. H. Roberts). 

 Massachusetts: Framingbam, May; Natick, June 5; Sherborn, June 7 (C. A. 



Frost). Springfield (E. A. Cbapin). Melrose, June 10 (C. C. Sperry). 

 New York: Olcott, May-July (H. Dietrich). 

 North Carolina: Tryon, May 15 (W. F. Fiske). 



Pennsylvania: Charter Oak, June 21 (Kirk and Knull). Harrisburg, May 24; 

 Hummelstown, June 22; Chambersburg, June 6; Berks County, June 1 

 (J. N. Knull). 

 Variations.— Length 3.75 to 5.5 millimeters. The front of the head 

 in the male varies from a bright blue to a bronzy green, and in the 

 female from bronzy cupreous to a dark brownish cupreous. The 

 outer joints of the antennae are sometimes as wide as long, the eyes 

 occasionally more acutely rounded beneath than above, and the pro- 

 sternal lobe is subtruncate or feebly emarginate in front. The median 

 depressions on the pronotum are variable in depth, moderately deep 

 in some examples, and scarcely indicated in others, and the pre- 

 humeral carinae are also slightly variable, but never as sharply ele- 

 vated as in jugrlandis, and in some examples are nearly absent. 



Host. — This species has been reared from oak {Quercus species) by 

 A. B. Champlain from material collected at New Haven, Conn. 



This species resembles otiosus very closely, but the absence of the 

 conspicuous pubescence on the prosternum of the male will distin- 

 guish it from that species. The male genitalia are also quite differ- 

 ent from those of otiosus and juglandis, being flattened and strongly, 

 arcuately expanded near the apex, whereas in those species the sides 

 are nearly parallel to each other near the apex. The females can not 

 be satisfactorily separated from those of the allied species. 



27. AGRILUS JUGLANDIS Knull 



Figure 21 



Agrilus juglandis Knull, Ent. News, vol. 31, 1920, pp. 7-8. — Frost and 

 Weiss, Canad. Ent., vol. 52, 1920, p. 206.— Britton, Conn. State Geol. 

 and Nat. Hist. Survey, Bull. 31, 1920, p. 244.— Nicolay, Journ. N. Y. 

 Ent. Soc, vol. 29, 1921, p. 175.— Knull, Canad. Ent., vol. 54, 1922, 

 p. 85.— Fall, Bull. Brooklyn Ent. Soc, vol. 20, 1925, p. 182.— Knull, 

 Ohio State Univ. Studies, vol. 2, no. 2, 1925, pp. 40-41, pi. 1, fig. 2.— 

 Chamberlin, Cat. Buprestidae, 1926, p. 67. 



Agrilus otiosus Stromberg, Canad. Ent, vol. 26, 1894, p. 36 (part). — Chit- 

 tenden, U. S. Dept. Agric, Div. Ent., Bull. 22, new ser., 1900, pp. 65-66, 

 68 (part).— Felt, N. Y. State Mus., Mem. 8, vol. 2. 1906, p. 518 

 (part).— Frost and Weiss, Canad. Ent., vol. 52, 1920, pp. 205-206 

 (part). — Mutchler and Weiss, N. J. Dept. Agric, Bur. Statistics and 

 Inspection, Circ. 48, 1922, p. 9 (part).— Felt, 35th Rept. N. Y. State 

 Ent. for 1921 (1923), p. 90 (part). — Chamberlin, Cat. Buprestidae, 

 1926, pp. 74-75 (part). 



