NORTH AMERICAN BUPRESTID BEETLES 305 



Host. — The larval habits are unknown, but the adults have been col- 

 lected in Texas on Callirhoe involucrata Gray, which may be its host 

 plant. 



107. AGRILUS LACUSTRIS LeConte 



Figure 83 



Agrihis lacustris LeConte, In Agassiz Lake Superior, 1850, p. 227 (only 

 listed, no description) ; Trans. Amer. Philos. Soc, vol. 11, 1859, p. 250. — 

 Pettit, Canad. Ent, vol. 2, 1870, p. 102. — Hubbakd and Schwarz, Proc. 

 Amer. Philos. Soc., vol. 17, 1878, p. 636. — Horn, Trans. Amer. Ent. Soc, 

 vol. 18, 1891, pp. 330-331, pi. 8, fig. 10.— Fall, Calif. Acad. Sci., 

 Occasional Papers, no. 8, 1901, p. 121. — Wickham, Bull. Lab. Nat. Hist., 

 State Univ. Iowa, vol. 5, no. 3, 1902, p. 269. — Fall and Cockerell, 

 Trans. Amer. Ent. Soc, vol. 33, 1907, p. 181. — Blatchley, Coleoptera 

 of Indiana, 1910, p. 804. — Woodworth, Guide to California Insects, 1913, 

 p. 195.— Frost and Weiss, Canad. Ent., vol. 52, 1920, p. 223.— Cham- 

 plain and Knull, Ann. Ent. Soc. Amer., vol. 18, 1925, p. 470. — 

 Chamberlin, Cat. Buprestidae, 1926, pp. 67-68. 



Agrilus cuneus LeConte, Proc. Acad. Nat. Sci. Phila., vol. 18, 1866, p. 384. — 

 Horn, Proc. Calif. Acad. Sci., vol. 4, ser. 2, 1894, p. 329.— Chittenden, 

 U. S. Dept. Agric, Div. Ent., Bull. 22, new ser., 1900, p. 67. 



Agrilus pubwentris Crotch, Proc. Acad. Nat. Sci. Phila., vol. 25, 1873, p. 95. 



Female. — Form moderately elongate, subopaque, and above uni- 

 formly dark brown, with a bronzy or cupreous tinge ; beneath similar 

 in color to above, but more shining. 



Head with the front rather wide, feebly convex, and about equal in 

 width at top and bottom, the lateral margins nearly parallel to each 

 other, and without a distinct median groove ; surface rather strongly, 

 irregularly rugose, obsoletely granulose, and sparsely clothed with 

 short, recumbent, whitish pubescence; epistoma not transverse be- 

 tween the antennae, and broadly, but not deeply, arcuately emargi- 

 nate in front; antennae extending to about middle of pronotum, 

 serrate from the fifth joint, and the outer joints about as wide as 

 long; eyes moderately large, broadly oblong, and more acutely 

 rounded beneath than above. 



Pronotum slightly wider than long, base and apex about equal in 

 width, and widest at apical third; sides arcuately rounded from 

 apical angles to basal fourth, then strongly sinuate to the posterior 

 angles, which are nearly rectangular ; when viewed from the side the 

 marginal and submarginal carinae are more or less sinuate, rather 

 widely separated, and connected to each other near the base ; anterior 

 margin feebly sinuate, and with a broadly rounded median lobe; 

 base transversely sinuate to middle of each elytron, then with a 

 broadly rounded median lobe, which is arcuately emarginate in front 

 of scutellum ; disk rather strongly convex, without a distinct median 

 depression, but with moderately deep, elongate, lateral depressions, 



