262 BULLETIN 14 5, UNITED STATES NATIONAL MUSEUM 



the inner tooth broad, shorter than outer one, and not turned inward. 

 Genitalia similar to those of impexus Horn. 



Length, 7 mm.; width, 1.75 mm. 



Female. — Differs from the male in having the head uniformly red- 

 dish cupreous; first and second abdominal segments convex at middle; 

 prosternum more sparsely punctate, and more sparsely clothed with 

 long, semierect, whitish hairs, and the anterior and middle tibiae 

 without a distinct tooth on inner margin at apex. 



Kedescribed from the male type. No. 2712, in the Philadelphia 

 Academy of Natural Sciences. 



Type locality. — Florida. 



DISTEIBUTION 



Material examined : 



Florida: Tampa, April 4-17 (Hubbard and Scbwarz), May 2, 1908 (Van Duzee). 

 Sanford, June 2 (E. D. Ball). Cleveland, April 26 (Knull and DeLong). 

 Dunedin, April 10-13, 1923 (W. S. Blatcbley). Lake Ashly, August 7 

 (Hubbard and Schwarz). 



Variations. — None observed except in size, which varies in length 

 from 5.5 to 7 millimeters. 



Host. — The larval habits are unknown, but Chittenden (1900) 

 records the adults on oak {Quercus sp.) and Blatchley (1919) records 

 collecting the adults by sweeping huckleberry and other low shrubs 

 during the latter part of March. 



This species seems to be rare in collections and so far has only 

 been recorded from Florida. It resembles the cupreous specimens of 

 impexus Horn, but can be separated from that species, as well as 

 from all other known species having the antennae serrate from the 

 fifth joint, the pronotum with prehumeral carinae, and the pubescence 

 forming spots on the elytra, by the sides of the prosternal process 

 being parallel to each other to behind the coxal cavities. 



90. AGRILUS IMPEXUS Horn 



Figure 67 



Agrilus impexus Horn, Trans. Amer. Ent. Soc, vol. 18, 1891, pp. 327-328. — 

 Stbomberg, Canad. Ent., vol. 26, 1894, pp. 36-37 (identification ?, 

 probably pseudofallax Frost or egeniformis Champlain and Knull). — 

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

 p. 68 (probably pseudofallax Frost or egeniformis Champlain and 

 Knull). — Faul, Calif. Acad. Sci., Occasional Papers, no. 8, 1901, p. 

 242.— Frost and Weiss, Canad. Ent., vol. 52, 1920, p. 223 (probably 

 pseudofallax Frost or egeniformis Champlain and Knull). — Cham- 

 Berlin, Cat. Buprestidae, 1926, p. 66 (part). 



Female. — Form moderately robust, subcylindrical, feebly flattened 

 above, and moderately shining; head bronzy brown, becoming more 

 or less cupreous on the occiput; pronotum and elytra cupreous, with 



