SUBGENUS TRICitAPION— KISSINGER 383 



above anteiinal insertion. Antennae inserted at distance from 

 eye one-half greater than width of frons at basal third of beak of 

 male, of female at distance from eye slightly greater than width 

 of frons and slightly distad of basal fourth; first segment shorter 

 than next thi-ee, second segment equals next two, club 0.18 by 

 0.08 mm. Eyes slightly prominent; frons wider than dorsal tip of 

 beak, with moderately strong, deep, median sulcus and one lateral 

 row of punctures. Prothorax slightly wider at base than long, middle 

 slightly wider than base, apex three-fourths as wide as base; sides, 

 beyond slight basal lateral expansion, roundly expanding to middle, 

 rounding to constricted apex; in profile dorsal surface slightly arcu- 

 ate; punctation deep, 0.03 to 0.04 mm. in diameter, interspaces 

 less than diameter of punctures, alutaceous; basal fovea deep basally, 

 narrow, extending about one-half length of prothorax. Elytra at 

 humeri one-thuxl wider than prothorax at base, 2.6 times as long as 

 prothorax, length to width as 10.5:7.5; intervals flat, at middle 

 twice as wide as striae, with one row of shallow, rather coarse punc- 

 tures bearing scales; striae deep. Claws with acute basal tooth. 



Special male characters: Three pairs of tibiae mucronate, mucro 

 on tibia 1 somewhat smaller. 



Types: I hereby designate the lectotype of this species as the 

 male specimen (MCZ 25098) in the Fall Collection labeled with a 

 blue square (representing Southeastern States) and "2442," collected 

 by Zimmerman, Co types (MCZ 381) in the J. L. LeConte Collec- 

 tion have the same data. 



Known disteibution: 



United States: Georgia: No exact locality. Arkansas: "Holes," May 27, 

 1950, R. H. Beamer (UK). 



Apion (Trichapion) mexicanum Wagner 



Figure I9,f-h 



Apion (Trichapion) mexicanum Wagner, Arch. Naturg. Berlin, vol. 78, p. 114, 

 1912. 



Description: Length, 1.50 to 2.00 mm.; width, 0.87 to 0.94 mm: 

 Moderately robust. Black; pubescence conspicuous, fine, white, 

 sparse, denser on sides of meso thorax. Male beak as long as head 

 and prothorax, two-thirds longer than prothorax, slightly curved, 

 moderately swollen laterally and ventrally at antennal insertion, 

 attenuate to middle, apical half nearly cylindrical; finely, sparsely 

 punctured in basal two-thirds, pubescence scant, apical third smooth, 

 shining. Female beak is longer than head and prothorax combined, 

 four-fifths longer than prothorax, similar to beak of male, apical third 

 nearly cylindrical; dull, alutaceous, minutely pubescent behind 

 antennal insertion, glabrous distad of antennal insertion, tip smoother. 



