INSF.CTS AFFECTING PARK AND WOODLAND TREES 587 



Jersey, Penns)l\ ania, District of Columbia, \'irt,nnia, West Vir<,Mnia, Ohio, 

 Southern States arul Arizona. Pxsiilcs th(; above, chestnut weevils have 

 been reporietl from Delaware, Maryland, Georgia, Michij^ran, and Missouri, 

 but without havinij been referred to either species. Possibly each of the 

 species may have a distribution over the United States coextensive with 

 its chosen food. 



The smaller chestnut weevil, Halaninus rectus Say rans^es from 

 about \(, to '3 inch in length, the general color of the scales or hair is light 

 brown al)o\e, pale yellow below, and on the thora.x there is a dark brown 

 tliscal stripe, which is limited at the sides, and dividetl longitudinally bv a 

 pale yellow line. The wing covers arc variously marked with tiie same 

 color. The beak of the female is very long, being ecpial to or even longer 

 in proportion than in the larger species. The long beak and the long 

 conical thorax is said to distinguish H. rectus from the other members of 

 the genus. The male is not so readily recognized. " It has a shorter 

 thorax, but it is still narrowed anteriorly; this, with small femoral tooth 

 oval elytra ra]jidly narrowed from base, and a yellowish or brownish spot of 

 condensed scales on each side of the central line of the metasterum 

 (occasionally obsolete), will, with practice, distinguish it." llamillon 



Life history. Tlu; life history of these two species agrees very closely 

 so far as known. The weevils appear about the time the chestnuts bloom 

 and oviposit in the young burrs. The long snout of the female is well 

 adapted for piercing the kernel, and one or more eggs are then deposited 

 therein. The slight injury to the husk and nut soon heals, and there is no 

 exterior indication of the insect's presence. The holes observed in wormy 

 chestnuts are made by the larvae when forsaking the nut. The females are 

 said to live but a short time, a week or two at the most. All the larvae of 

 this species enter the grountl in the autumn, none winter in the nut. though 

 this has been thought ])rol)able by some writers. Dr I l.nnilton states that 

 the appearance of the smaller chestnut weevil in breeding cages was much 

 more irregular than that of the larger, varying from June 28 to Oct. 1. On 

 this latter date he found in th(' cage pupae in various stages, and many 



