. Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. Stinging Insects 43 The ants lacking a sting are those of the subfamily Camponotinse, which includes the largest of our local species. It is an interesting fact that some of these species possess the largest poison glands and reservoir (fig. 28) and it is found that when they attack an enemy they bring the tip of the abdomen forward and spray the poison in such a way that it is introduced into the wound made by the powerful mandibles. More feared than any of the other Hymenoptera are the horne
. Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. Stinging Insects 43 The ants lacking a sting are those of the subfamily Camponotinse, which includes the largest of our local species. It is an interesting fact that some of these species possess the largest poison glands and reservoir (fig. 28) and it is found that when they attack an enemy they bring the tip of the abdomen forward and spray the poison in such a way that it is introduced into the wound made by the powerful mandibles. More feared than any of the other Hymenoptera are the hornets and wasps. Of these there are many species, some of which attain. 29. A harmless, but mucli feared larva, the "tomato ; Natural size. Photograph by M. V. S. a large size and are truly formidable. Phisalix (1897), has made a study of the venom of the common hornet and finds that, like the poison of the honey-bee, it is neither an albuminoid nor an alkaloid. Its toxic properties are destroyed at 120° C. Phisalix also says that the venom is soluble in alcohol. If this be true, it differs in this respect from that of the bee. An interesting phase of the work of Phisalix is that several of her experiments go to show that the venom of hornets acts as a vaccine against that of vipers. NETTLING INSECTS So far, we have considered insects which possess poison glands connected with the mouth-parts or a special sting and which actively. 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 Riley, William A. (William Albert), b. 1876; Johanssen, Oskar Augustus, 1870-. Ithaca, N. Y. , The Comstock Publishing Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1915
