SUBGENUS TRICHAPION — KISSINGER 291 



the two." Since Fall (1898) is the first reviser, his choice of A. pro- 

 dive will stand. 



According to Fall (1918), A. nunenmacheri Wagner is only a minor 

 variation of the typical A. proclive. Specimens determined by Wag- 

 ner in the Nunenmacher Collection in the Chicago Museum of Natural 

 History are typical A. proclive. 



Apion glyphiciim Group 



Three very closely allied species com.prise this group. Relation- 

 ship of this group to the ^. simile and A. proclive groups has already 

 been discussed. The range of two species, A. glyphicum Sharp and 

 A. vinosum Sharp, overlaps in southern Mexico. The third species, 

 A. chuparosae Fall, is apparently confined to Baja California. 



As mentioned above the species are verj^ close to each other and are 

 hard to separate, however there is insufhcient evidence to warrant 

 synonymizing the names. A. vinosum is distinct because of the light 

 reddish brown elytra and the yellowish pubescence on the dorsal sur- 

 face. The other two species are black, the elytra have a more or less 

 distinct aeneous luster, and the pubescence of the dorsal surface is 

 white. The beak of the m.ale of A. chuparosae is a little more slender 

 and elongate and is slightly longer than the prothorax. The beak of 

 the male of A. glyphicum, is shorter than the prothorax. 



Apion (Trichapion) chuparosae Fall 



Figure 5,e 

 Apion chuparosae Fall, Trans. Amer. Ent. Soc, vol. 25, p. 141, pi. 4, fig. 16, 1898. 



Description: Length, 2.0 to 2.4 mm. 



Robust; black, elj^tra mth slight aeneous luster. Pubescence fine, 

 white, sparse, somewhat coarser and denser ventrally. Male beak 

 slightly longer than prothorax, slightly, evenly curved, stout, attenu- 

 ate from antennal insertion to tip; punctured and sparsely pubescent 

 to apical fifth, with deep sidcus above antennal insertion in basal half. 

 Antennae of male inserted at distance from eye one-half greater than 

 width of frons, between basal fourth and third of beak; first and second 

 segments each shorter than next two segments, club 0.21 by 0.09 mm. 

 Eyes large, prominent; frons narrow, about as wide as dorsal tip of 

 beak. Prothorax at base one-third wider than long, middle narrower 

 than base, apex two-thirds as wide as base ; sides beyond marked basal 

 lateral expansion slightly converging to middle, rounded to constricted 

 apex; in profile dorsal surface slightly arcuate in front of middle; 

 punctation shallow, 0.03 mm. in diameter, interspaces generally less 

 than diameter of punctures, alutaceous; basal fovea extending one- 

 third length of prothorax, narrow, deep at middle. Elytra at humeri 



