%\t Canabiau ^ntumoliigBi 



VOL. VI. 



LONDON, ONT., APRIL, 1874. 



No. 4 



NOTES ON THE LARVA AND PUPA OF 

 SAPERDA ^lOESTA, Lec. 



BY THE EDITOR. 



On the 25th of March, 1S73, I received from P. E. Bucke, Esq., P. 

 O. Dep't, Ottawa, a bundle of twigs of the Bahn of Gilead tree ( Popidus 

 balsaniifcra), containing larv?e of moesta. These larv?e were very thickly 

 set in the branches, in many places not more than an inch or two apart 

 and situated chiefly at the base of the buds, where the presence of an 

 occupant was indicated by a swelling in the branch, surmounted by a 

 dark brown patch of partly decayed bark. The castings and debris of 

 the food were of a light orange color, and were pushed forward, stuffing 

 the swollen part. The whole length of the excavation made by each larva 

 did not usually exceed an inch, and so much of this towards the front 

 was filled with debris, that the clear space left was very little larger than 

 its body. 



The body of the larva was nearly cylindrical, tapering a little posteri- 

 orly, and about half an inch in length. 



Head very small, dark reddish brown in front, with a pale streak down 

 the centre. Color pale behind ; jaws black. 



Body above deep yellow, with a glossy surface, sprinkled with very 

 minute short yellow hairs, invisible without a lens. Second segment 

 above and below a little deeper in color, and more horny looking than 

 the other segments ; interspaces between segments strongly indented. 

 There was a depressed dorsal line not different in color from the rest of 

 the body, but sunken, and on each side of it the projecting rings of the 

 body were somewhat flattened. Spiracles pale brown, rather small. 

 Terminal segment a little more hairy than the others. 



