TRIBE II. CRYPTURGINI. 651 



1051 (9186). CRYPTURGUS PUSILLUS Gyll., 1813, 371. 



Small, elongate, cylindrical. Shining, dark piceous, antennae and legs 

 brown, slightly hairy on head and at sides of thorax, and 

 with short, fine, yellowish pubescence on elytra. Beak 

 very short. Second joint of funicle much smaller than 

 first, club tolerably large, solid, strongly compressed, 

 oval, obliquely narrowed on outer half, corneous, shining 

 and but slightly pubescent on oblique edges. Head large, 

 exserted, visible from above. Thorax longer than wide, 

 scarcely narrowed in front, slightly rounded on sides, 

 more rounded at base and tip, uniformly sparsely but 

 strongly punctured. Elytra elongate, cylindrical, with 

 rows of large punctures, the sutural one impressed 

 toward base; intervals with scarcely perceptible rows of 



Fig. 151. X ^6. 



(After Hage- small punctures, declivity convex, without impressions. 

 Ventral sutures straight, first and fifth segments longer. 

 Front coxa? contiguous; tibia? dilated, finely serrate, tarsi slender, third 

 joint not dilated. Length 1 1.5 mm. (Fig. 151.) 



Pocono Lake, Pa., Aug. 14, under dead and dying pine. (Wen- 

 zel.} Occurs in Canada, Maine, Massachusetts, New York, West 

 Virginia, New Jersey, under bark of dead pine branches, and in 

 spruce, fir and hemlock, making a short, sinuous primary gallery 

 about half an inch Jong, which gives off at intervals about ten 

 short secondary galleries from each side. They are not made in 

 the sap-wood, but penetrate only the bark, so that no regular 

 pattern is made. This species, fide Hopkins, enters the galleries 

 of other bark beetles, from which it starts its numerous small, 

 irregular galleries through the bark. The same habit is recorded 

 by European authors, Jn West Virginia adults were observed 

 from March to October. Packard says it occurred in abundance 

 in Maine in the bark of white pine stumps (the trees having been 

 felled the previous November) in all stages from the middle of 

 July to Sept. 1. 



1052 (11,254). CRYPTURGUS ALUTACEUS Schwarz, 1893, 17. 



Elongate, nearly cylindrical. Moderately shining, sparsely and in- 

 conspicuously pubescent, pubescence longer on head, sides of thorax and 

 on elytral declivity; color brown or yellowish-brown, antenna? and legs 

 pale. Head distinctly alutaceous, extremely, finely and obsoletely punctu- 

 late. Thorax slightly longer than wide, slightly rounded on sides, widest 

 at middle, surface distinctly alutaceous and with sparse, fine, more or 

 less obsolete punctures; and a faint smoother median line is feebly in- 

 dicated. Elytra as wide and nearly twice as long as thorax, more shining, 

 punctate-striate; stria? distinctly Impressed with the punctures closely 

 placed and moderately strong; intervals narrower than the stria?, convex 

 and without distinct punctures, declivity simple. Length 0.9 mm. 



