. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 9b THE REPORT OF THE No. 19 larvse found in the cells are white and plump, and waxen in appearance, and have sharp mandibles. They are liable to attacks from predaceous secondary parasites. (Fig. 16). B, b. There is a two-winged fly (Trypeta solidaginis, Fitch), which forms a large, round, pithy gall in the stems of the Golden Rod (SoUdago Canadensis, L.). The larva has its cell in the centre of the gall, but bites. Fig. 16. a. Gall on Blueberry. Natural size, showing cells of Guest-fly. Natural si
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 9b THE REPORT OF THE No. 19 larvse found in the cells are white and plump, and waxen in appearance, and have sharp mandibles. They are liable to attacks from predaceous secondary parasites. (Fig. 16). B, b. There is a two-winged fly (Trypeta solidaginis, Fitch), which forms a large, round, pithy gall in the stems of the Golden Rod (SoUdago Canadensis, L.). The larva has its cell in the centre of the gall, but bites. Fig. 16. a. Gall on Blueberry. Natural size, showing cells of Guest-fly. Natural size, c Greatly enlarged. h. Section of Gall, Larva of Guest-fly. a passage to the outer rind. Through, this passage, probably, an insidious foe finds its way, viz., Eurytoma gigantea, Walsh. I gave a minute des- cription of this species, both of the male and of the female, in the Canadian Entonvologist, vol. xxvi., p. 122. The country naturalist, who takes the trouble to study the plant galls and their inhabitants, finds many things to awaken his interest and to ex- cite his admiration. AN ELEMENTAEY STUDY OF INSECTS. By Prof. W. Lochhead, Guelph. The late Prof. C. Y. Piley, of Washington, estimated the number of kinds of insects on the earth at ten millions. Of this immense number only 200,000 are known, yet these make up two-thirds of all the kinds of animals known. The question will naturally arise : In what way do insects differ from other animals? Although they differ much among themselves, all in-. 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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