Guide to the study of insects and a treatise on those injurious and beneficial to crops, for the use of colleges, farm-schools, and agriculturists . f Juneprevious (it is com-mon to cover the bogswith water when con-venient), they do notreach their full size until a few weeks later. When fullygrown they enter the ground and spin their cocoons within afew inches of the surface. The cocoons are covered with grainsof sand and are hardly distinguishable from small lumps ofearth. They remain in the ground all winter. I do not knowpositively the perfect insect, as I have never been able to rearit in
Guide to the study of insects and a treatise on those injurious and beneficial to crops, for the use of colleges, farm-schools, and agriculturists . f Juneprevious (it is com-mon to cover the bogswith water when con-venient), they do notreach their full size until a few weeks later. When fullygrown they enter the ground and spin their cocoons within afew inches of the surface. The cocoons are covered with grainsof sand and are hardly distinguishable from small lumps ofearth. They remain in the ground all winter. I do not knowpositively the perfect insect, as I have never been able to rearit in-doors. In the spring of 1867 I bred two species of Ich-neumons from these cocoons that had remained in the houseover winter, The Strawberry leaf-roller (A. fragariae Riley, Fig. 261 ; c,lines showing the dimensions of the moth; a, larva, naturalsize ; 5, the head and four succeeding rings of the body; d,the terminal ring of the abdomen, showing the anal legs) has,according to Riley, recently been doing much injury to straw-berry plants in Illinois and Canada. It crumples and foldsthe leaves, feeding on their pulpy substance, and causing them. TORTRICID^. 341 to appear dry and seared, and most usually lines the inside ofthe fold with silk. There are two broods during the year, andthe worms of the first brood, which appear during the monthof June, change to the pupa state within the rolled up leaf,and become minute reddish brown moths during the fore partof Jul3^ After pairing in the usual manner, the females deposittheir eggs on the plants, from which eggs in due time hatchesa second brood of worms. These last come to their growth to-wards the end of September, and changing to pupa^, pass thewinter in that state. The moth expands from .40 to .45 of aninch. The head and thorax are reddish brown, with pale palpiand legs, and dusky antennae, while the tarsal joints are duskyat the tips. The fore wings are reddish brown and streakedand spotted witli black and white, as in the figur
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishe, booksubjectinsects
