272 BULLETIN 14 5, UNITED STATES NATIONAL MUSEUM 



Female. — Differs from the male in having the front of head darker 

 brown and broader, equal in width at top and bottom, and the lat- 

 eral margins parallel to each other; presternum not quite so densely 

 pubescent ; first abdominal segment convex at middle, and without a 

 median depression, and the tibiae without a distinct tooth on inner 

 margin at apex. 



Redescribed from the male and female cotypes, Catalogue No. 255 r 

 in the collection of the Museum of the Brooklyn Institute of Arts 

 and Sciences. 



Type locality. — Palmerlee, Ariz. 



DISTRIBUTION 



Material examined : 



Arizona: Palmerlee, Cochise County, June 27-July 29 (C. Sehaeffer) ; July 22 

 (H. A. Wenzel). Huachuca Mountains, July 27-31 (C. Sehaeffer). 



Variations. — The color is rather constant in the specimens exam- 

 ined. The pubescence is more or less variable, usually forming ir- 

 regular designs, but when part is lost by abrasion, the specimens 

 might be placed with those species having pubescent spots on the 

 elytra. Length 5.5 to 7.5 millimeters. 



Host. — The larval habits are not known, but Sehaeffer has collected 

 the adults on oak (Quercus sp.) from which the species is named. 



This species resembles lecontei Saunders, but can be easily distin- 

 guished from that species by having the prosternal lobe broadly 

 rounded in front, whereas in lecontei it is deeply, arcuately emargi- 

 nate. From those species having pubescent spots on the elytra, it 

 can be separated by having the front of the head convex, the prono- 

 tum depressed at the middle, and the marginal and submarginal 

 carinae on the pronotum separated for their entire length. 



94. AGRILUS PALMACOLLIS Horn 



Figure 70 



Agrilus pahnacollis Horn, Trans. Amer. But. Soc., vol. 18, 1891, p. 326. — 



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



68 (part).— Griffith, Ent. News, vol. 11, 1900, p. 568.— Fall, Calif. 



Acad. Sci., Occasional Papers, no. 8, 1901, p. 241. — Fall and Cockerell, 



Trans. Amer. Ent. Soc, vol. 33, 1907, p. 181. — Frost and Weiss, Canad. 



Ent., vol. 52, 1920, p. 222 (part).— Chamberlin, Cat. Buprestidae, 1926. 



p. 76 (part). 

 Agrilus palmaticollis Kerremans, Wytsman's Gen. Insectorum, fasc. 12, pt. 



4, 1903, p. 288 (typographical error). 



Female. — Moderately elongate and shining; head dark reddish 

 brown ; pronotum and elytra piceous, with a strong aeneous or cupre- 

 ous tinge, and each elytron ornamented with three pubescent spots; 

 beneath similar to above, but more shining. 



