94 THE REPORT OF THE No. 19 



With, brief accounts of two diminutive moths that frequent the oak 

 I must bring this paper to a close. 



A few seasons ago I found on the oaks growing on the Rhodes estate at 

 Bergerville great numbers of the caterpillars of the beautiful little Tortrix, 

 Cacoecia fervidana, Clem. The caterpillar of this species is brownish 

 buff, and has a dark brown head. When disturbed it lets* itself down by 

 a thread, dangling at the end of it spider-wise. It gathers several leaves 

 together and binds them with silken threads. Within the nest so formed 

 "it makes itself a silken case — feeding from it upon the pulpj^ portions of 

 the leaves. And in this case it undergoes the change to the chrysalis. 



The moth is a pretty little object with reddish brown fore-wings, much 

 clouded with fuscous and marked with several brown patches. The hind 

 wings are very dark. The fringes are pale. 



The other moth — the last I shall mention — is a miner, Lithocolletes 

 hamadryadella, Clem. Its larva forms whitish blotches in the leaves, for 

 it feeds between the upper and lower skins of the leaf. Sometimes four or 

 five of these blotches will be found in one leaf. The tiny caterpillar is 

 brownish yellow, flat, footless, but very active. When full fed it goes 

 into chrysalis within its mine. The moth is a brilliant little object with 

 white fore-wings, having bronze bands with black borders on the inner 

 side. The hind wings are silvery. It is one of the numberless minute 

 things in nature that glorify God by bearing witness before men of His 

 almighty power. 



ON THE FOOD HABITS OF CERTAIN OF THE HTMENOPTERA. 



(Paper No. II.). 



By Rev. Thomas W. Fyles, D.C.L., F.L.S., Levis, Quebec. 



Gall- Inhabiting Hymenopetra. 



Galls are abnormal growths upon various parts of plants, resulting 

 from the operations of insects of different kinds, every kind of insect agent 

 producing its own peculiar gall. But here it must be observed that the in- 

 sects found in galls are not, in all cases, the producers of them; they may 

 be intruders, either hurtful or harmless, upon the domains of others. 



The insects belonging to the Hymenoptera that are found in galls inay 

 thus be grouped : 



A — Gall producers. 

 a — Solitary. 

 h — Social. 

 B — Gall invaders. 



a — Feeding upon the substance of the gall. 

 & — Preying upon the producers of the gall, or their guests. 

 A, a — Of galls produced by Hymenopterous insects, the kind found 

 upon the leaves of the White Willow {Salix alba, L.) is so abundant and 

 conspicuous that even the least observant dweller in the country, having 

 a knowledge of the tree and the use of his eyes, will readily call the galls 

 to mind. They are produced by a small Saw-fly. 



The White Willow is not indigenous to this country; it was introduced 

 from Europe, and the saw-fly was, probably, introduced with it. In 1885 

 I submitted specimens of our Canadian insect and its galls to Mr. Edward 



