660 FAMILY IV. SCOLYTIDJE. 



1067 (9154). CHRAMESUS ICORI.*; Lee., 1868, 168. 



Oval, convex. Black, not shining, antennae yellow; above clothed with 

 short, stiff, ashy hairs, with rows of longer erect bristles on the intervals 



of elytra. Head large, prominent, concave in 

 male, slightly convex in female, feebly 

 punctured. Thorax broader than long, 

 strongly narrowed in front, coarsely, not 

 densely punctured, feebly bisinuate at base, 

 rounded on sides. Elytra about twice as 

 long as thorax, convex, obtusely rounded 

 behind, basal margin acute and subserrate, 

 '53- ' very obsoletely striate, finely, not densely 



punctulate. Tibia? gradually dilated, feebly serrate; tarsi with joints 1 3 

 very short, third scarcely dilated, fourth joint nearly as long as others 

 united. Length 1.5 mm. (Fig. 153.) 



Westville, N. J., June 16. (Wenzel.) Dubois and Posey 

 counties, Ind., scarce; May 14 June 6. Described from specimens 

 bred from twigs of hickory from Columbia, Pa. Occurs in Can- 

 ada, Eastern, Middle and Western United States. ( Swain e.) 

 West Virginia, mining under partly green bark on cut branches 

 and tops of dying hickory; adults. April, June. October. (Hop- 

 kins.) 



Chramesus chapuisii Lee. (1876, 375) differs from icoricr only by the 

 intervals of elytra being densely clothed with small, thick scales and sin- 

 gle rows of rather short bristles, and by the striae being narrower and finely 

 crenulate instead of coarsely punctured; the males with fringe of rather 

 long, sparse and stiff bristles on antennal scape. It was described from a 

 single Louisiana male and may occur in our territory. 



IV. CARPHOBORUS Eichhoff, 1864. (Gr., "chaff" + "devour.") 



Funicle 5-jointed; club 3-jointed, oval, thick, slightly longer 

 than wide, transversely annulated, obtuse at tip, glabrous at base; 

 eyes emarginate in front, mouth clothed with long coarse hair; 

 thorax uniformly finely punctured ; elytra with striae of quadrate 

 punctures, intervals finely roughened, the first and third elevated 

 and serrate on the declivity; tibiae moderately dilated, front one 

 with two acute teeth near apex on outer side and long terminal 

 hook on inner angle; first joint of tarsi minute, shorter than 

 second, third cordate, not broader, emarginate, fourth as long 

 as the others united. Two small species (1.5 2 mm.) of dull, 

 densely punctured surface, clothed with very small yellowish 

 scales represent the genus. 

 1068 (9177). CARPHOBORUS BIFURCUS Eich., 1868, 147. 



Slender, cylindrical. Black, elytra brown, the whole body covered with 

 fine, ashy scale-like hairs, without lustre, antennae and legs ferruginous- 

 yellow. Beak very short, front convex. Thorax convex, shorter than wide, 



