. The insect book [microform] : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies. Insectes; Insects. THH GALL-FLIFS H 1% (Sa^tr-finiii/x ) To this Rroup beloriK the true , as well is certain insects which arc inquilines, or jr,ii.,iy j^uests. and also certain forms which are true parasites. Although we call the Cynipoids me true gall-thes, there are many other insects which make galls such as some o. the two-winged flies ol th
. The insect book [microform] : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies. Insectes; Insects. THH GALL-FLIFS H 1% (Sa^tr-finiii/x ) To this Rroup beloriK the true , as well is certain insects which arc inquilines, or jr,ii.,iy j^uests. and also certain forms which are true parasites. Although we call the Cynipoids me true gall-thes, there are many other insects which make galls such as some o. the two-winged flies ol the families Cecidomyiidic and Trypetida;, cer- ^ tain caterpillars, a few Chalcis (lies, and a few beetles, as well as cer- tain mites and scale insects. Certain of the oak galls formed by Cynipoids were early used in the manufac- ture of ink, and later for tannin, so that when one speaks of gall- flies these creatures are always thought of. They are small dark *â '« -~ ~' y"'i'^ s|);itica. , colored four-winged flies, at once distinguishe ' allies by the venation of the wings and the struc as pointed out in the analytical tabli Those which make galls lay their eggs in fht , ssues of the growing plant, and the larvx when hatcnec^ feed upon the pi int cells and their contents. A very slight may result, but in the majority of cases there is a rapid growth of plant-cells and a curious enlargement of variable shape which is called a gall. The nature of the gall has long been a disputed point. It was at lirst thought that it was a purely vegetable growth and 53. 'â 'Ur Riley.) their close he thorax,. 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 Howard, L. O. (Leland Ossian), 1857-1950. Toronto : W. Briggs
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsects, bookyear1901
