TRIBE II. IPIXI. 629 



1006 (11,244). PITYOPHTHORUS PRUIXOSUS Eich., 1878, 198. 



Subelongate, cylindrical. Piceous or brownish-ferruginous. Thorax 

 oblong-ovate, behind finely punctulate. Elytra finely punctulate, densely 

 clothed with short gray hairs, apex almost deplanate, suture subsulcate 

 on each. Male, front surrounded with very dense convergent yellow 

 hairs. Female, front sparsely clothed with gray hair. Length 2 mm. 



Described from Carolina. Synonymous with this species is 

 probably Pityophthorits qiicrcipcrda Schwarz,* which has been 

 recorded from Feekskill, N. Y.. on felled oak (Sherman) ; Hem- 

 lock Falls, N. J., rare; Florida under oak bark in June. It occurs 

 in red oak, making- primary galleries, partly in the bark and 

 partly in the outermost layer of the wood, which exhibit peculiar 

 features; the female bores straight through the bark, then follows 

 a very short gallery vertically downward, which is crossed imme- 

 diately below the entrance hole by an extremely long transverse 

 gallery. 



1007 (9082). PITYOPHTHORUS PUBERULUS Lee., 1868, 157. 



Cylindrical, moderately slender. Black, thinly clothed with short, 

 erect gray hairs. Head slightly convex, punctulate. Thorax a little 

 longer than wide, slightly narrowed in front, feebly rounded on the sides, 

 broadly rounded at base and more strongly at tip, with reclinate tuber- 

 cles in front of middle, strongly but finely punctured at sides and behind. 

 Elytra about one-half longer than thorax, strongly but finely punctured, 

 but. not in rows; posterior declivity not at all flattened, slightly convex, 

 with a well marked sutural stria extending from tip one-third the length 

 of elytra, tip of suture slightly acute, but not acuminate. Somewhat re- 

 sembles minutissimus in form but smaller and much less finely punc- 

 tured and narrower. LeConte adds: "Easily distinguished by absence 

 of fringe of long hair on head," but doubtless drew his description from 

 female. Length less than 1.5 mm. 



District of Columbia, Michigan, Ontario, New Jersey, Penn- 

 sylvania; April Aug. Infests dying terminal twigs of pine; 

 West Virginia, mining under bark on dead trees; adults, July. 

 (Hopkins.} Perfect clouds of this insect were seen at Lake Su- 

 perior in 18T(> on a tract of burned white pine land. (Scliwarz.} 

 P. i it fans Eich. is a synonym. 



lOOS (9070). PITYOPHTHORUS PULICABIUS Zimm., 1868, 144. 



Brown or ferruginous, antennae and feet, yellow. Head thickly punc- 

 tured, with a slight, 'impression upon the front; joints 2 to 5 of funicle 

 closely connected, forming a pedicel to the club; anterior margin of male 

 thickly fringed with long yellow hair. Thorax somewhat longer than 

 wide, roughly tuberculate in front, thickly and finely punctured behind; 



*Proc. Ent. Soc. Wash., I, 56. 



