. Annual report. Entomological Society of Ontario; Insect pests; Insects. Fig. 12. Feeds on a great variety of trees, including oaks, apple, spruce, larch, maple, etc. Fig. 10 represents the male moth ; fig. 11 a the wing- less female ; b a young caterpillar hanging by its silken thread ; c and d pupae ; fig. 12, the caterpillar fully grown. DIPTERA. In this order, that contains the flies, insects distinguished by having only two wings, we do not find many species attacking the maples. Indeed I have no personal knowledge of any, and Dr. Packard only mentions the following species which does no
. Annual report. Entomological Society of Ontario; Insect pests; Insects. Fig. 12. Feeds on a great variety of trees, including oaks, apple, spruce, larch, maple, etc. Fig. 10 represents the male moth ; fig. 11 a the wing- less female ; b a young caterpillar hanging by its silken thread ; c and d pupae ; fig. 12, the caterpillar fully grown. DIPTERA. In this order, that contains the flies, insects distinguished by having only two wings, we do not find many species attacking the maples. Indeed I have no personal knowledge of any, and Dr. Packard only mentions the following species which does not appear in our Canadian lists of Diptera. It belongs to a genus in which we have several well known destructive insects, popularly known as midges, such as the Wheat midge, C. tritici, and Clover-seed midge, C. lequ- mincola. 36. Cecidomyia aceris Shimer, on Acer dasycarpum, the silver maple. GOLEOPTERA. Of beetles we find quite a long list infesting the maple, species belong to the Cerambycidee, or long-horned beetles, a containing nearly all the large beetles of which the larva? are known as "borers," and of which species infest all our trees, although some trees, such as the pine and hickory, are much more infested than are the maples. 37. Glycobius speciosus, Say, is uni- versally known as the sugar-maple borer, and has been frequently referred to in our Reports (See ETos. Ill, VIIL, IX., XL and XII.) The beetle (Fig. 13) appears to be rare in this neighbourhood, but in the. Fig. 10. Ten family. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Entomological Society of Ontario; Ontario. Dept. of Agriculture. Toronto, The Society
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