INSECTS AFFECTING PARK AND WOODLAND TREES 475 



Life history. Tlic beetles occur abroad in June and larvae have also 

 been met with the same month. Its borino;s cause galls in balm of Cilead 

 branches, the larvae occasionally beini,^ very abundant and in some instances 

 not more than an inch or two apart and located chielly at the base of the 

 buds, where their i)rcsence is indicateil by a swellin^^ in the branch sur- 

 mounted I)y a brown patch of partly decayed bark. The larva makes an 

 excavation more than an inch Ion-', much of which is fiUe.l with debris. 



Bibliography 

 1904 Felt, E. P. & Joutel, L. H. X. V. Siau- Mus. IJul. 71, p. 68-73 



Dorytomus parvicollis Case\- 



A small, brownish l)lark, yellowish spec k.>l wt-cvil about '^ inch long, occurs in 

 early S])ring under poplar bark. 



This snout beetle was very abundant under the loose bark of po])lars 

 at Karner, up to th(> middle of May 1902. The insects evidently sou.j;ht 

 this retreat for shelter, because there were no evidences of borin.L,^s in their 

 immediate vicinity. The b(-ak is moderately lont,^ in the male, lont^er 

 in the female ; the thorax is rounded, rather coarsely punctured ; the elytra! 

 striae are coarsely punctured, and the wini^ covers are clothed with a some- 

 what sparse golden pubescence, frequently present in bunches hen- and 

 there, giving a spotted api^earance. This species has been recorded from 



Indiana. 



Dorytomus vagenotatus Casey 



A small snout beetle about 'a inch long, irregularly clothed with grayish pubescence 

 occurs under poplar bark in early .May. 



This species is much smaller than the preceding, and apparently cor- 

 respondingly scarce, since only four specimens were taken as compared 

 with over one hundred of the former species. This differs from the first not 

 only in size but in the finer sculpturing of the prothorax and the smaller dots 

 of the wing covers, which latter are partially clothed with a grayish instead 

 of golden pubescence. This species was described from Indiana. 



