12 REPORT 102, U. S. DEPARTMENT OF AGRICULTURE, 



Family GURCULIONID^. 

 Subfamily RYNCELENIN^. 



Tribe ANTHONOMINI. 



Genus ANTHONOMUS Germar. 



Anthonomus vestitus Boheman. 



(PL II, fig. 3.) 



By far the most important species in the series seat by Mr. Town- 

 send is the Peruvian cotton-square wee^^il, already treated in our 

 literature.^ ^ 



To aid inspection work the description given in the second paper 

 quoted is here repeated. 



Length, 2.5-4 mm.; breadth, 1.2-1.8 mm. 



Female. Oblong ovate, convex, blackish piceous, rather closely clothed with 

 whitish, elongate scales, which are more piliform beneath. Head convex, finely 

 punctate, moderately squamose, front depressed, with median carina between eyes 

 extending on beak to the point opposite the attachment of the antennae. Beak 

 slender, cylindrical, shining, finely punctate-rugulose, lightly squamose only at base, 

 reddish piceous, lightly arcuate, slightly enlarged at tip, over one and one-half times 

 as long as prothorax. Antennal scrobes directed at eyes; scape inserted slightly 

 beyond the middle, slender, clavate, barely reaching the eye, reddish testaceous, 

 funicle 7-jointed, reddish testaceous, first joint as long as the two following, clavate, 

 second joint elongate, remaining joints moniliform; club ovate, blackish piceous, 

 xvith first joint very distinct, pubescence fine. Prothorax transverse, apicaily trun- 

 cate, basally bisinuate, base one-half wider than apex; sides convex, converging, 

 impressed before apex; dorsum slightly convex, transversely impressed behind apex, 

 densely but shallowly punctate, clad with elongate wliite scales. Scutellum broadly 

 ogival, clad with very fine piliform scales. Elytra anteriorly subtruncate, about 

 one-half wider than thorax, a little over twice as long as the thorax; sides almost 

 parallel to posterior third, thence converging; surface convex, regularly punctate- 

 striate; interstices subconvex, smooth; closely covered with scaly vestiture. Body 

 beneath of same color as above, but more densely clothed with finer vestiture. Femor^. 

 clavate, unidentate, basally flavo-testaceous, the remainder infuscated, squamose; 

 tibiae slender, flavo-testaceous, almost straight, angulate beneath before middle; 

 tarsi elongate; claws elongate, cleft. Ventral segments siibequal, the fifth slightly 

 longer than the third or fourth. Pygidium covered. 



The sexes are distinguished as follows: The female beak is slender, quite smooth, 

 has very little pubescence at base, is regularly but slightly arcuate and has the scape 

 inserted slightly beyond the middle; the pygidium is rarely visible, apicaily nar- 

 rowly truncate and pubescent only at apex; the posterior tibiae are almost straight, 

 the angle opposite the femoral tooth being almost obsolete. The male beak is stouter, 

 more strongly punctato-rugose, pubescent to the insertion of the antennae; scape 

 inserted almost at apical third; beak arcuate at point of insertion of antennas; the 

 pygidiam is usually visible, broadly truncate at apex and pubescent except in a nar- 

 .row strip at base; the posterior tibiae are straight, but inner edge is regularly emar- 

 ginate in the median third. 



1 TowisrsEND, Charles H. T. The cotton-square weevil of Peru and its bearing on the boll-weevil prob- 

 lem in North America. Jour. Econ. Ent., v. 4, No. 2, p. 241-248, April 17, 1911. 



2 Pierce, W. Dwight. Systematic notes and descriptions of some weevils of economic or biological 

 importance. Proc. U. S. Nat. Mus., v. 42, No. 1889, p. 155-156, March 19, 1912. 



