94 



FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



is stout, moderately dense ou the anterior part of the elytra and still denser and scale- 

 like on the declivity. In the twoCalifornian species of the same group the pubescence 

 consists of long and short hair intermixed. P. querciperda occurs from New York to 

 Florida. (Schwarz.) 



41. Monarthrum mali (Fitch). 



Mr. Schwarz has observed this Scolytid while at work in pieces of 

 the red oak at Washington, D. C. It was first observed by Fitch at- 

 tacking the apple tree in New York. It ranges from Lake Superior to 

 Florida. (Le Conte.) 



The parent beetle bores through the bark straight into the wood to a distance of 

 from 5 to 7™"". Then follows a transverse gallery and, in most cases, a second trans- 

 verse gallery immediately behind the first ; in several instances there is still a third 

 gallery. The secondary burrows, in which the larvaj undergo their transformations, 

 and which, in all probability, are made by the larvae, start rectangularly upward or 

 downward from the transverse galleries and are but little longer than the beetle. 

 Oviposition in this species has not yet been observed, and it remains, also, uncertain 

 whether only one or several beetles have been at work when there are two or three 

 transverse galleries present. (Schwarz, Proc. Ent. Soc. Wash., i, 44, 48.) 



Beetle. — In this genus the body is loug and cylindrical; the scape cf the antenns& 

 long and slender; the funicle of but one short joint, the others being absorbed in the 

 club, which is rounded and very much compressed ; elytra elongate, nearly perpen- 

 ' dicularly declivous behind, and pubescent on the declivity ; feebly punctured in. 

 rows. M. mali is small brown, elytra not hairy at tip. 



Male: Club of anteun;© with a long apical spine and a few hairs; declivity of 

 elytra oblique, not retuse at the sides, acutely margined only at the apex and for a 

 short distance behind; face of declivity with a slight reniform elevation rising into 

 two cusps near the suture, which is deeply impressed and excavated at that place ; 

 head flat, opaque, not fringed with hair. 



Feinalo: Club of anteume without apical spine ; declivity of elytra as in male, but 

 with the reniform elevation and its two cusps much stronger ; head slightly convex, 

 subopaque, feebly punctured. 



Lake Superior to Florida; depredates on apple trees. Length, 2""™ (.08 inch). 



(Le Conte.) 



42. Ithycerus noveboracensis (Forster). 



According to Riley this weevil in- 

 fests the oak, having been seen bor- 

 ing into the twigs of the burr-oak; 

 the larva is of the usual curculioni- 

 form appearance. The female first 

 makes a small longitudinal excava- 

 tion with her jaws, eating upward 

 toward the end of the branch, then 

 turns round and thrusts her egg into 

 it. She was observed in the act by 

 Mr. Charles Peabody. (Riley's un- 

 published notes.) 



i^ff/Ze.— This is our largest species of weevil, 

 and may be recognized by its great size, by 

 its broad, large snout, its ash color, and by 

 the eight pale lines on the wing-covers, inter- 

 rupted by four or five distinct black squarish spots. Length, ly™™. 



Fig. 35. Ithycerus noveboracends. Smith del. 



