368 PROCEEDINGS OF THE NATIONAL MUSEUM vol. no 



Material examined: One male compared with type by G. A. K. 

 Marshall and 70 specimens. 

 Known distribution: 



Mexico: Guerrero (type, BMNH). Puebla: Huauchinango, June 1954, D. G. 

 Kissinger. 



Apion (Trichapion) obUtiim Smith 



Figure 16, e,/ 



Apion oblitum Smith, Trans. Amer. Ent. Soc, vol. 11, p. 54, 1884.— Fall, Trans. 



Araer. Ent. Soc, vol. 25, p. 153, 1898. — -Schwitzgebel and Wilbur, Journ. 



Kansas Ent. Soc, vol. 15, p. 44, 1942. 

 Apion capitatum Smith, Trans. Amer. Ent. Soc, vol. 11, p. 54, 1884. — Fall, 



Trans. Amer. Ent. Soc, vol. 25, p. 154, 1898. 



Description: Length, 2.0 to 2.4 mm. 



Aloderately robust. Black; pubescence fine, white, sparse, denser 

 on mesothorax and metepisternum. Male beak shorter than head 

 and prothorax combined, one-fifth longer than prothorax; deflexed at 

 basal third; in lateral view abruptly narrower in front of antennal 

 insertion; in dorsal view expanded laterally over antennal insertion, 

 attenuate beyond dilated portion, apical third nearly cylindrical; 

 basal three-sevenths dull, alutaceous, punctured, sparsely pubescent, 

 apical four-sevenths dull, shining. Female beak similar to male except 

 that in lateral view it is not as abruptly narrowed beyond antennal 

 insertion. Antennae inserted at distance from eye equal to width of 

 frons; nearly at basal fourth of beak; first segment equals next two, 

 second segment shorter than next two, club 0.21 by 0.08 mm. Eyes 

 moderately prominent; frons wider than dorsal tip of beak. Prothorax 

 at base slightly wider than long, middle and base about equal, apex 

 five-sevenths as wide as base; sides beyond basal lateral expansion 

 slightly expanded to middle, rounded to moderately constricted apex; 

 in profile dorsal surface slightly arcuate; punctation deep, 0.04 mm. 

 in diameter, interspaces about one-half as wide as punctures, aluta- 

 ceous; basal fovea deep, narrow, extending one-third length of pro- 

 thorax. Elytra at humeri two-fifths as wide as prothorax, 2.8 times 

 as long as prothorax, length to width as 4 : 3 ; intervals twice as wide 

 as striae, nearly flat, generally with one row of scales; striae moderately 

 deep, fine. Scutellum triangular, 0.04 by 0.04 mm., not furcate. 

 Front femora 3.5 times as long as wide. Claws with acute basal tooth. 



Special male characters: Tibia 1 with minute mucro, tibiae 2 and 3 

 with small, subdentate mucrones. 



Types: I hereby designate as lectotype of A. oblitum Smith the 

 male specimen (USNM 1261) labeled Colorado. A cotype (MCZ 379) 

 m the J. L. LeConte Collection is labeled Texas. 



I hereby designate the lectotype of A. capitatum Smith as the male 

 specimen (MCZ 380) in the J. L. LeConte Collection labeled Nebraska. 



