. Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. The Siphonaptera or Fleas The Siphonaptera or Fleas 119 The Siphonaptera, or fleas (fig. 89) are wingless insects, with highly chitinized and laterally compressed bodies. The mouth-parts are formed for piercing and sticking. Compound eyes are lacking but some species possess ocelli. The metamorphosis is complete. This group of parasites, concerning which little was known until recently, has assiuned a very great importance since it was learned. Xenopsylla cheopis, male Cx25). After Jordan and
. Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. The Siphonaptera or Fleas The Siphonaptera or Fleas 119 The Siphonaptera, or fleas (fig. 89) are wingless insects, with highly chitinized and laterally compressed bodies. The mouth-parts are formed for piercing and sticking. Compound eyes are lacking but some species possess ocelli. The metamorphosis is complete. This group of parasites, concerning which little was known until recently, has assiuned a very great importance since it was learned. Xenopsylla cheopis, male Cx25). After Jordan and Rothschild. that fleas are the carriers of bubonic plague. Now over four hundred species are known. Of these, several species commonly attack man. The most common hominoxious species are Pulex irritans, Xenopsylla cheopis, Ctenocephalus cams, Ctenocephalus felis, Ceratophyllus fasctatus and Dermatophilus penetrans, but many others will feed readily on htiman blood if occasion arises. We shall treat in this place of the general biology and habits of the hominoxious forms and reserve for the systematic section the discussion of the characteristics of the different 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
