NORTH AMERICAN BUPRESTID BEETLES 25 



4. AGRILUS LUCANUS Fall 



Agrilus lucanus Fall. Ent. News, vol. 17, 1906, pp. 167-168.- — Chamberlin, 

 Cat. Buprestidae, 1926, p. 69. 



Male. — Form strongly cuneiform, strongly flattened above, and 

 moderately shining; head and pronotum bronzy brown, with a dis- 

 tinct cupreous tinge; elytra bronzy brown, with a more or less dis- 

 tinct cupreous, bluish, and purplish tinge in certain lights, and 

 ornamented with indistinct brownish yellow pubescent designs; be- 

 neath cupreous, and more shining than above. 



Head with the front narrow, feebly convex, vaguely narrower at 

 top than bottom, the lateral margins nearly parallel from bottom 

 to near occiput, where they are feebly, arcuately constricted, with a 

 broad, deep depression on upper half, narrowly connected to a deep, 

 triangular depression behind the epistoma, and a round shallow de- 

 pression on each side at middle of front; surface densely, coarsely 

 punctate, forming short rugae, and sparsely clothed with long, re- 

 cumbent, yellowish pubescence ; epistoma strongly transverse between 

 the antennal cavities, strongly elevated, and broadly, deeply emar- 

 ginate in front; antennae extending nearly to posterior angles of 

 pronotum, serrate from the fourth joint, joints one to seven longer 

 than wide, and joints eight to ten as wide as long; eyes large, 

 broadly oblong, and about equally rounded above and beneath. 



Pronotum one-half wider than long, about equal in width at base 

 and apex, and widest at middle; sides feebly, arcuately rounded from 

 apical angles to the posterior angles, which are rectangular; when 

 viewed from the side the marginal carina is strongly sinuate, the sub- 

 marginal carina nearly straight, the two carinae broadly separated 

 anteriorly, and connected to each other behind the middle; anterior 

 margin strongly sinuate, and the median lobe feebly, broadly rounded, 

 base feebly emarginate at middle of each elytron, the median lobe 

 broadty rounded, and feebly, arcuately emarginate in front of scutel- 

 lum ; disk moderately convex, with a broad, deep, median depression, 

 the concavity constricted at middle and narrowed in front, a broad, 

 deep depression on each side along lateral margin extending to base, 

 and with strongly defined, arcuate prehumeral carinae extending from 

 posterior angles to middle of pronotum; surface obsoletely granu- 

 lose, rather coarsely but not closely rugose, the rugae more or less 

 transverse at middle, and becoming oblique toward the sides, finely, 

 sparsely punctate between the rugae, and sparsely clothed with mod- 

 erately long, recumbent, brownish yellow hairs. Scutellum strongly, 

 transversely carinate, and the surface finely reticulate. 



Elytra about as wide as pronotum, and vaguely wider at base than 

 behind middle; sides nearly parallel from base to behind middle, 



