502 FAMILY III. CURCULIONIDJE. 



;'. Median vitta more or less dilated at middle. 



7v. Thoracic vittse coarsely punctate; base of thorax strongly 



Insinuate; dilation near base of beak wide with sides 



subangulate, above deeply and broadly grooved and very 



coarsely punctate. 882. DESTRUCTOR. 



kk. Thoracic vitta? finely or not at all punctate (except in var. 



sublcrvis of callosus) . 



I. Median vitta broadly dilated at middle; lateral vittse 

 often more or less interrupted or obscure in front of 

 origin of branch. 

 m. Surface without artificial coating. 



n. Hind tibiag of male simple; elytral intervals flat, sub- 

 equal; stria? with very coarse fovese; dilation near 

 base of beak subglabrous, not grooved and finely 

 punctured above; length 7.5 9 mm. 883. ZEIE. 

 nn. Hind tibiae of male subangulate at middle, the angle 

 with a dense brush of long hair; elytral intervals 

 feebly alternating in width, the wider with two or 

 three rov\ r s of punctures; stria? with coarse punc- 

 tures; length 8 10.5 mm. 884. SCOPARIUS. 

 mm. Surface densely coated; lateral vitta? indistinctly lim- 

 ited, the' median not extending behind the middle, the 

 basal interspace of thorax with very coarse punctures; 

 length 8.513 mm. 885. CALLOSUS. 

 II. Median vitta reduced to a slender apical carina, slightly 

 dilated at middle of thorax; lateral vitta? without 

 outer branch; surface with clayey coating; length 

 7.5 10 mm. 886. MELAXOCEPHALUS. 

 ;';". Median vitta not or feebly dilated at middle. 

 o. Lateral vittse present, sometimes abbreviated. 

 p. Median vitta fusiform; lateral vittse short, usually repre- 

 sented by an oblique line on basal half; base of beak 

 strongly swollen, coarsely punctate; color piceous or 

 reddish, the suture black; length 6.5 7 mm. 887. SAYI. 

 pp. Median vitta narrow; lateral vitta? entire; base of beak 

 feebly swollen, finely and sparsely punctate; length 8.5 



. 9 Hi m . 888. SUBCABINATUS. 



oo. Lateral vittse absent; median vitta narrow, represented by 

 a dorsal line extending to apex, where there is a large ob- 

 long fovea each side of it; length 7 mm. 889. APICALIS. 

 ii. Median vitta forked in front, enclosing a slight fossa imme- 

 diately behind the apical constriction. 



q. Body naked; beak four-fifths as long as thorax, cylindrical; 



length 911 mm. 890. PONTEDERI^E. 



qq. Body with more or less dense clayey coating; beak shorter, 



distinctly and uniformly compressed. 

 r. Thoracic vittse and apical fossa well defined. 

 s. Coating scant and easily abraded, not covering lower sur- 

 face or sides; lower surface finely and sparsely punctate; 

 length 610 mm. 891. VENATUS. 



