622 FAMILY IV. SCOLYTIDJE. 



995 (9113). XYLEBORUS IMPBESSUS Eich., 1867, 400. 



Elongate, cylindrical. Ferruginous, subopaque, clothed with grayish 

 hair. Thorax oblong, deeply, cribrately punctate behind. Elytra punctate in 

 rows, intervals uniseriately punctate; apex obliquely declivous, at suture 

 subsulcately retuse, with denticles on third interspace distant and acute, 

 the second almost in the middle of the declivity, larger, the third obsolete 

 behind, suture elevated, unarmed. Length 2 2.5 mm. (Eichlwff.) "De- 

 clivity with two prominent tubercles, and some very indistinct marginal 

 ones, elytra with rows of rather distinct punctures." (LeConte.) 



Massachusetts, New Jersey and Georgia. Food plant, Finns. 



996 ( -). XYLEBORUS XYSS^E Hopkins, 1915-a, 66. 



Oblong-elliptical. Dark ferruginous. Pronotum with posterior dor- 

 sal area smooth, shining, faintly punctured, median and anterior lateral 

 areas rugose. Front moderately narrow, subconvex, opaque, sparsely 

 punctulate, tuberculate behind; apex declivous, flatly depressed, punctate, 

 irregular; interspaces with impressed punctures, causing the punctures to 

 appear confused; declivity interspace 1 flat, 3 scarcely elevated and with 

 stout submedian granules, posterior lateral margin not serrate. Length, 

 female, 2.4 mm. 



Nichols, South Carolina, in Xi/ssa sp. ; March 26. 



997 (9107). XYLEBORUS rrsr.vrus Eich., 1867, 400. 



Subelongate, cylindrical. Fuscous ferruginous, shining, with gray pub- 

 escence. Thorax subquadrate, sparsely punctulate behind. Elytra paler 

 at base, twice as long as thorax, punctate-striate, intervals uniseriately 

 punctulate, tuberculate behind; apex declivous, flatly depressed, punctate, 

 with a large acute spinule in the middle, distant from suture, second in- 

 terspace unarmed, impressed. Length 3 mm. (Eichhoff.) Male, oblong- 

 elliptical, ferruginous. Pronotum slightly broader than elytra, anterior 

 area broadly and deeply impressed, faintly rugose, anterior margin 

 slightly produced but without distinct tubercles, and posterior lateral 

 area faintly punctured; front narrow, subopaque, with broad and deep 

 triangular impression extending to the vertex, pubescence coarse, mod- 

 erately long; elytral striae irregularly punctured in approximate rows; de- 

 clivity oblique, rugose, interspace 1 unarmed, 2 with one or two acute 

 granules, posterior lateral margins nearly smooth. (Hopkins.) 



Southern half of Indiana, frequent; April 16 July 23. Sifted 

 from debris of rotten beech. Orange Mts., Ocean County, Wood- 

 bury and Five Mile Beach, N. J., April; in roots and stumps of 

 oak. District of Columbia, very common on oak. San ford, 

 Florida, Jan. 12 March 25. Monongalia Co., W. Ya., in Quercus 

 alba, March. Ranges from New Jersey to North Carolina (type), 

 Texas, Guatemala and Columbia. Food plants, Quercus, in bark. 

 (Packard.) Eicoria, Castanca, Juf/lans cincrca, Finns, (wine and 

 vinegar casks ) . ( Swain e. ) 



