﻿NEW SPECIES OF IPIDAE FROM MAINE* 



By M. W. Blackman 



Professor of Forest Entomology, Neiv York State College of 

 Forestry, Syracuse, N. Y. 



The writer spent the four months from June 18 to October 18, 

 1919, investigating certain forest insects for the Maine Forestry 

 Department in co-operation with the Maine Agricultural Experi- 

 ment Station. In this work the chief attention was paid to the 

 Ipidae, commonly known as the bark-beetles, and large numbers of 

 specimens were collected, not only in the vicinity of Orono, but 

 in several localities between Bangor and Kittery Point, in the 

 Eangeley Lake region and in regions near Umbazookskus, Cham- 

 berlain and Telos Lakes. In the course of the work several new 

 species of bark beetles were found, including those described 

 herewith. 



The writer Welshes to express his appreciation of the courtesies 

 extended by Professor J. M. Briscoe, of the Department of For- 

 estry, and Doctor E. M. Patch, Entomologist of the Ex])ei-iment 

 Station, during the course of the work. 



Xylechinus americanus n. sp. 



Description of the adult: Dark brown, with antennae and 

 legs lighter in color; 2.2 mm. long, 2.4-1 times as long as wide, with 

 the head visible from above. 



Front of the head plano-convex, finely punctate and granulate, 

 with numerous, fine, rather short, greyish hairs directed mesially, 

 the median carina sharply and distinctly elevated below but 

 broken up into a row of coarser gi-anules above, with a faint 

 arcuate transverse depression originating at the level of the middle 

 of the e^^e, the epistomal margin produced in the median third, 

 with the prolongation emarginate at the median line; vertex and 

 genae reticulate, finely punctured, with a few minute hairs; eyes 

 elongate, moderately coarsely granulate, with the inner margin 

 scarcely sinuate; antennal club connate, very slightly flattened 

 with three sutures visible all around and nearly straight ; f unicle 

 of about the same length, with five segments, the distal ones 

 slightly wider. 



Fronotmn 1.1 times as wide as long; widest behind Avitli the sides 

 subparallel on the posterior half, consti'icted before the middU\ 

 rounded in front and with the hind margin bisinuate; disc and 

 sides closely punctured and finely granulate, clothed with cinere- 



* Papers from the Maine Ag^ricultural Experiment Station Entomology 

 No. 108. Contribution No. .3^1 from the Department of Forest Entomology. 

 Ntw-^ York State College of Forestry, Syracuse. N. Y. 



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