TUIIU-: ii. IPINI. 631 



Michigan. Described from Marquette and Detroit, Mich. 

 Ranges from Quebec and New York to Florida. Mines under 

 green bark on dying sumac; adults, June November. (Hopkins.} 

 Infests sumac. Rims glabra, and poison ivy, Rhus toxicodendron, 

 primary galleries starting from a central chamber, but usually 

 following the longitudinal axis of the vine; the larval galleries 

 crowd and intersect each other so that the whole bark near the 

 central chamber is undermined. The oblique galleries of this 

 species in sumac are familiar and characteristic, but of little im- 

 portance except when the carved branches are utilized in rustic 

 structures. Ashmead has described a parasite (Cerocepliala 

 pityopJithori) reared from this species, with the assigned locality 

 Haw Creek, Fla. The females of this and the next species are 

 difficult to distinguish but the males differ in pubescence of 

 head. In annectens male the pubescence is yellow, very long, 

 forming a circular fringe and usually concealing the sculpture. 

 In consimilis male the pubescence is much shorter, of grayish 

 color, sparse anteriorly and more brush-like on posterior part of 

 head. 



1012 (9075). PITYOPHTHORUS ANNECTENS Lee., 1878, G22. 



Elongate-cylindrical. Brown, shining, with a very few slender, erect, 

 scarcely serrate yellow hairs. Thorax longer than wide, in front rough- 

 ened almost concentrically for about one-third the length, sides and base 

 finely sparsely punctured, punctures becoming larger as they approach 

 the roughened surface. Elytra with approximate rows of small punctures, 

 intervals transversely rugose; apical declivity retuse, deeply impressed 

 near suture, which is elevated, sutural tip rather acute; front tibiae with 

 two small teeth. Male, head broadly concave, opaque with shallow punc- 

 tures, concavity fringed with long yellow hairs. Female, head slightly 

 convex, strongly and deeply punctured. Length l.G mm. 



Tampa, Fla., on yellow pine. District of Columbia, on pine. 

 "I fully believe that P. annectens will prove to live exclusively on 

 Finns palustris and allied species." 



Doubtfully referred to this Floridian species is a species found by 

 Fitch under the bark of small sapling pines and by Packard (1890) un- 

 der bark of white pine at Providence, R. I. Fitch supposed it to be P. pusil- 

 lus Harris, ( a name since replaced by minutissimus) and was so impressed 

 by the intricacies of its work as to write: "How wonderful is nature, that 

 thus presents an interesting subject for our study in each particular track 

 an inch or two in length which a family of little worms make as they eat 

 their way along in the bark of a tree." 



1013 (9085). PITYOPHTHORUS SERIATUS Lee., 1878, 433. 



Elongate, cylindrical. Brown, shining, nearly glabrous, with only a 

 few scattered, erect hairs on the head, front of thorax and hind part of 



