. Entomology for medical officers. Insect pests; Insects as carriers of disease. 36 ENTOMOLOGY FOR MEDICAL OFFICERS and serrated at the tip, the maxillse being much more coarsely serrated than the mandibles; they are used with the epipharynx for piercing the integument of the victim. In the blow-fly (Fig. 3) the labium is stout and fleshy, and ends in a pair of large, oval, expansile labella; its groove is a deep trough, which is closed above by the epipharynx and hypopharynx and so converted into a suctorial tube. Mandibles and maxillae are not recognisable as independent organs; if they exis
. Entomology for medical officers. Insect pests; Insects as carriers of disease. 36 ENTOMOLOGY FOR MEDICAL OFFICERS and serrated at the tip, the maxillse being much more coarsely serrated than the mandibles; they are used with the epipharynx for piercing the integument of the victim. In the blow-fly (Fig. 3) the labium is stout and fleshy, and ends in a pair of large, oval, expansile labella; its groove is a deep trough, which is closed above by the epipharynx and hypopharynx and so converted into a suctorial tube. Mandibles and maxillae are not recognisable as independent organs; if they exist at all, which is very doubtful, they are represented by short chitinous vestiges incorporated in the labium. The maxillary palps vary in form, and are a useful means. palp,.. epiph. pseudolracfieae^^ /-/ff/6>/ Pio. 3.—Head of 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 Alcock, A. (Alfred), 1859-1933. London, Gurney & Jackson
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