SUBGENUS TRICHAPION — KISSINGER 307 



parallel-sided; in dorsal view stout and parallel at base, attenuate to 

 apical thii'd, distinctly expanded to tip; dull and alutaceous throughout, 

 basal half punctured, more or less sparsely pubescent, apical third 

 smoother, more shining. Antennae inserted at distance from eye less 

 than width of frons, of male at basal fifth of beak, of female at basal 

 seventh; first segment equals next two, second segment shorter than 

 next two; club of male 0.18 by 0.09 mm.; of female 0.20 by 0.08 mm. 

 Eyes prominent; frons much wider than dorsal tip of beak, with 

 shallow median furrow and two lateral rows of punctures. Prothorax 

 at base one-fourth wider than long, middle narrower than base, apex 

 ranges from 0.67 to 0.70 as wide as base; sides beyond basal lateral 

 expansion nearly parallel to middle, rounded to strongly constricted 

 apex; in profile dorsal surface slightly arcuate; punctation moderately 

 deep, 0.03 mm. in diameter, interspaces about one-half diameter of 

 punctures; basal fovea moderately deep, short. Elytra at humeri 

 two-fifths wider than prothorax at base, 2.8 times as long as prothorax, 

 length to width ranges from 10 : 7 to 11 :8.5; intervals nearly flat, 

 twice as wide as striae, rather smooth and polished, with two rows of 

 fine punctures; striae moderately deep, fine. Scutellum triangular, 

 0.08 by 0.06 mm. Front femora about 3.5 times as long as wide. 

 Claws mth acute basal tooth. 



Special male characters: Tibiae 2 and 3 armed with small, simple 

 mucrones, tibia 1 slightly flattened for about one-thu-d its length on 

 anterior inner surface, area devoid of scales and at most slightly striate. 



Types: Kissinger (1957) designated as lectotype of A. fraternum 

 the female specimen (USNM 1252) labeled Columbus, Tex. Co- 

 types (MCZ 375) are in the J. L. LeConte Collection with the same 

 data. 



Material examined: Lectotype of A. fraternum; type of A. sayi in 

 Riksmuseum labeled "male, Ap. rostrum Say, Am. bor. Say; Typus"; 

 the "allotype" of A. sayi, which is also a male labeled "female, Ap. 

 rostrum?, Say, N. Carolina, Harris; Allotypus"; and more than 500 

 specimens. 



Known distribution : 



United States: Alabama: Chambers Co., Langdale, H. H. Smith (USNM). 

 Arkansas: Dardanelle, Apr. 8, 1905, on wheat, G. I. Reeves, Webster No. 2907 

 (USNM); Fayetteville, Aug. 16, 1901 (USNM). District of Cohimbia, J. B. 

 Smith Collection, cotype of A. griseum (USNM). Florida: Chittenden Collec- 

 tion (USNM). Illinois: Many records throughout the State. Indiana: Tip- 

 pecanoe Co., July 4, 1952, N. M. Downie (DGK). Iowa: Independence, May 

 15, H. F. Wickham (USNM); Iowa City, May 19, 1917, L. L. Buchanan 

 (USNM); Lake Okobija, July 1916, L. L. Buchanan (USNM). Kansas: Coffey- 

 ville, June 22, 1939, L. W. Hepnor (UK) ; Douglas Co., 900 ft., F. H. Snow (UK); 

 Hutchinson, May 2, 1948, R. H. Beamer (UK); Lawrence, June, twilight and 

 night, J. S. Tucker (USNM); Reno Co., Aug. 13-20, 1917 (UK); Sedgwick Co., 



