NORTH AMERICAN BUPRESTID BEETLES 331 



DISTRIBUTION 



Material examined : 



Arizona: Hot Springs, June 27 (Barber and Schwarz). Santa Rita Mountains, 

 May 17 (Hubbard and Schwarz). " Tanke Verde," reared (M. Chrisman). 

 Also numerous specimens simply labeled "Arizona," collected by Morrison, 

 and probably all from the type locality. 



Variations. — Very little variation has been observed in the speci- 

 mens examined except that some examples are slightly more bronzy 

 green than others, and the length varies from 3 to 4 millimeters. 



Host. — This species has been reared by Hubbard and Schwarz, and 

 also by Chrisman, from the twigs of catclaw {Acacia greggii Gray). 



This species resembles Taphrocerus agriloides Crotch very closely, 

 and is allied to Agrilus putillus Say, from which it can be readily 

 separated by the elytra not being costate, the eyes broadly rounded 

 beneath, and the scutellum not transversely carinate. 



117. AGRILUS PUTILLUS Say 



Figure 92 



Agrilus putillus Say, Trans. Amer. Philos. Soc, vol. 6, new ser., 1836, p. 

 163. — LeConte, Trans. Amer. Philos. Soc, vol. 11, new ser., 1859, p. 250 ; 

 Say's Writings, vol. 2, p. 579 (Bailliere Bros, ed., 1859; Cassino and 

 Co. ed., 1883).— Crotch, Proc. Acad. Nat. Sci. Phila., vol. 25, 1873, p. 

 96. — Hubbard and Schwarz, Proc. Amer. Philos. Soc, vol. 17, 1878, 

 p. 656.— Harrington, Canad. Ent. vol. 16, 1884, p. 71.— Horn, Trans. 

 Amer. Ent. Soc, vol. 18, 1891, p. 323. — Blatchlet, Coleoptera of 

 Indiana, 1910, p. 804. — Nicolay and Weiss, Journ. N. Y. Ent. Soc, vol. 

 28, 1920, p. 145.— Knuix, Canad. Ent., vol. 54, 1922, p. 85; Ohio State 

 Univ. Studies, vol. 2, no. 2, 1925, pp. 50-51.— Chamberlin, Cat. Bup- 

 restidae. 1926, p. 79. 



Male. — Form small and robust, moderately shining, and piceous, 

 with a more or less distinct aeneous tinge, except the head, which is 

 dark bronzy green in front; beneath similar in color, but slightly 

 more shining than above. 



Head with the front rather wide, about equal in width at top and 

 bottom, the lateral margins vaguely, broadly, arcuately constricted at 

 middle, and with a broad, feeble, longitudinal groove on the occiput ; 

 surface densely, finely granulose, feebly transversely rugose on the 

 front, becoming longitudinally rugose on the occiput, and rather 

 densely clothed anteriorly with long, recumbent, silvery white hairs ; 

 epistoma slightly transverse between the antennae, and broadly., 

 rather deeply, arcuately emarginate in front; antennae extending 

 about to middle of pronotum, serrate from the fifth joint, and the 

 outer joints not wider than long; eyes rather broadly oval, and 

 distinctly more acutely rounded beneath than above. 

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