NORTH AMERICAN BUPRESTID BEETLES 27 



5. AGRILUS CHAMPLAINI Frost 



Figure 3 



Agrilus champlaini Frost, Cauad. Ent., vol. 44, 1912, pp. 245-247. — Beit- 

 ton, Conn. Agri. Exp. Sta., 12th Ent. Kept. 1913, p. 291, pi. 16, 

 fig. c. — Frost and Weiss, Canad. Ent., vol. 52, 1920, p. 207. — Britton, 

 Conn. State Geol. and Nat. Hist. Survey, Bull. 31, 1920, p. 244 (listed).— 

 Frost, Canad. Ent., vol. 52, 1920, p. 249.— Knxjll, Canad. Ent., vol. 54, 

 1922, p. 85; Ohio State Univ. Studies, vol. 2, no. 2, 1925, pp. 39-40, pi. 

 9, fig. 1. — Chamberlin, Cat. Bupvestidae, 1926, p. 56. 



Agrilus otiosus Felt, N. Y. State Mus., Bull. 186, 1916, p. 95 (not ottosus 

 Say). 



Male. — Elongate, rather robust, slightly flattened above, subopaque, 

 and uniformly black, with a feeble purplish tinge; beneath slightly 

 more shining than above, and with a vague aeneous reflection. 



Head with the front rather wide, flat, slightly wider at top than 

 at bottom, the lateral margins arcuately expanded near the middle, 

 and with a moderately deep, broad, longitudinal depression extend- 

 ing from occiput to middle of front; surface densely, coarsely 

 punctate, coarsely rugose, especially on vertex and occiput, and 

 sparsely clothed behind the epistoma with short, semierect, whitish 

 hairs; epistoma strongly transverse between the antennae, and 

 broadly, deeply, arcuately emarginate in front; antennae extending 

 to middle of pronotum, serrate from the fourth joint, and the outer 

 joints as wide as long; eyes large, strongly elongate, and about equally 

 rounded above and beneath. 



Pronotum about three-fifths wider than long, about equal in width 

 at base and apex, and widest at middle; sides rather strongly arcu- 

 ately rounded from anterior margin to posterior angles, which are 

 obtuse; when viewed from the side the marginal carina is sinuate, 

 the submarginal carina nearly straight, the two carinae rather widely 

 separated at apical fourth, and connected to each other near the base; 

 anterior margin slightly sinuate, with the median lobe feebly 

 rounded; base deeply emarginate at middle of each elytron, the 

 median lobe very wide, and broadly subtruncate in front of the scu- 

 tellum; disk moderately convex, with two round, deep depressions 

 placed transversely in front of middle, a larger, deeper depression 

 in front of scutellum, a broad, rather deep depression on each side 

 along lateral margin at middle, and extending obliquely backward 

 to the base inside of the prehumeral carina, which is rather short, 

 strongly elevated, and obtusely rounded on top; surface coarsely, 

 densely, transversely rugose, the rugae finer and somewhat confused 

 toward the sides, with numerous punctures between the rugae. Scu- 

 tellum not transversely carinate, but the surface finely, densely 

 reticulate. 



2305—28 3 



