612 FAMILY IV. SCOLYTIDJE. 



Grant Co., Va., in Betula sp. ; July 9. New York, Montreal 

 Island. Food plant, Betula lutea. (Swaine.) Resembles D. au- 

 tograplius Ratz. (Fig. 145) in size and sculpture; the principal 

 difference being in the secondary sexual characters, which are 

 rather prominent in betulce and obscure in autographus. Male 

 with head more convex in front and with only a few long hairs; 

 female with front slightly depressed and thickly covered with 

 long yellow hairs. 



974 ( ). DRYOCOETES LIQTTIDAMBARIS Hopkins, 1915-a, 51. 



Oblong-elliptical. Color dark reddish. Pronotum with moderately 

 long pubescence on anterior dorsal area and lateral margin, pronotal ru- 

 gosities fine and extending to base on lateral margin, posterior dorsal 

 area distinctly punctured, becoming rugose toward the basal angle. Front 

 iDroad, flat, with moderately dense, golden yellow pubescence. Elytra 

 with punctures of interspaces in irregular rows, impressed; declivity 

 shining, steep, flattened, interspace 1 broad, slightly elevated, 2 broad, 

 flat, 3 narrow, each with a row of rather coarse granules; pubescence 

 sparse, not very long, even on declivity. Male, declivity more shining 

 and almost without granules; front broad, subconvex, anterior half flat 

 with faint carina, posterior and lateral margins with a few long hairs. 

 Length 3.4 4.2 mm. 



Virginia Beach. Va.., in Liquidamlxir Kli/raciflua L. ; Nov. 26. 



975 f- -). DRYoofETKs AMKRICANVS Hopkins, 1915-a, 51. 



Oblong, elliptical. Reddish-brown. Pronotum with fine regular ru- 

 gosities extending to basal angles, median and posterior dorsal areas with 

 coarse punctures extending toward basal angle, dorsal line distinct. Front 

 Convex, subgranulate, with a few long hairs and with short anterior 

 median elevated line. Elytral striae faintly impressed, punctures coarse; 

 interspaces narrow with moderately coarse, irregular punctures; declivity 

 subconvex, interspace 1 faintly elevated, second and third equal in width, 

 not impressed or elevated, each with a row of fine granules, pubescence 

 sparse and moderately long, stria 1 faintly impressed. Male, front very 

 broad, convex, anterior area flattened, shining, with a few hairs; de- 

 clivity more shining, smoother, striae less distinctly impressed than in 

 female, but each interspace with rows of faint granules. Length 2.9 

 4.1 mm. 



Cheat Bridge, Randolph Co., W. Ya., in Picea mbais: Sep- 

 tember. Steubeu and Posey counties, Ind., rare; May 13 June 

 IT; beneath bark of dead tamarack, Lariir laricitia DuRoi in 

 Steuben Co. West Virginia, under bark of dead Abies cxcclsa. 

 (Pierce.} Mines under green bark on logs, stumps and dying 

 trees of black and Norway spruce; adults March, May. (Hop- 

 kins.} Pocono Lake, Pa., August. (Wc)i~<'l.} This is the eastern 

 North American species heretofore confused with the European 

 species D. autof/raplius Ratz. The latter occurs throughout 



