SUBGENUS TRICHAPION — KISSINGER 365 



wider than prothorax at base, three times as long as prothorax, length 

 to width as 9 : 6.5; intervals more than twice as wide as striae, flat, 

 with one row of minute punctures bearing minute scales; striae 

 fine, deep. Scutellum elongate-triangular, 0.06 by 0.04 mm., convex, 

 no median furrow. Front femora four times as long as wide. Claws 

 with acute basal tooth. 



Special male characters : Tibiae 2 and 3 armed with moderately long, 

 subdentate mucrones, mucro of tibia 3 longer than that of tibia 2. 



Types: Holotype male (USNM 64130), Tampico, TamauHpas, 

 Mexico, Dec. 16, E. A. Schwarz. Allotype female, same locality as 

 holotype, December 7 (USNM). One paratype, male, same locality 

 as holotype, December 6 (DGK). 



Apion (Tricliapion) subtinctum Fall 



Apion subtinctum Fall, Trans. Amer. Ent. Soc, vol. 25, p. 138, 1898. 



Description: Length, 1.37 to 1.70 mm.; width, 0.68 to 0.82 mm. 



Moderately robust. Black with reddish bronze luster; pubescence 

 scant, fine, white, denser mediobasally on prothorax and on sides of 

 mesothorax and metathorax. Male beak as long as head and prothorax 

 combined, slightly, evenly curved; with a moderate, lateral dilation 

 over antennal insertion, attenuate to middle, apical half nearly 

 cylindrical; polished, laterally with a few strong punctures at antennal 

 insertion; glabrous beyond base. Female beak similar. Antennae 

 inserted at distance from eye equal to width of frons, at basal one- 

 sixth of beak; first segment longer than next two, shorter than next 

 three; second segment shorter than next two; club 0.18 by 0.06 mm. 

 Eyes prominent; frons narrow, about equal to dorsal tip of beak, with 

 slight median sulcus and a lateral row of punctures. Prothorax at 

 base one-sixth wider than long, middle slightly narrower than base, 

 apex three-fourths as wide as base; sides moderately expanded 

 laterally at base, nearly parallel to middle, rounded to moderately 

 constricted apex; in profile dorsal surface nearly flat; punctation 0.01 

 to 0.02 mm. in diameter, shallow, posterior margin of punctures more 

 abrupt, interspaces flat, alutaceous, variable, greater than diameter of 

 punctures, usually twice as wide; basal fovea shallow, linear, reduced. 

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

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

 wide as striae, flat, with one row of fine punctures bearing inconspicuous 

 scales, smooth; striae deep, with one row of rather conspicuous scales. 

 Scutellum triangular, 0.04 by 0.04 mm., with median furrow. Front 

 femora 3.75 times as long as wide. Claws with acute basal tooth. 



Special male characters : Tibiae 2 and 3 armed with moderately long, 

 simple mucrones. 



