. Entomology for medical officers. Insect pests; Insects as carriers of disease. palp,.. epiph. pseudolracfieae^^ /-/ff/6>/ Pio. 3.—Head of Pig. 4.—Thorax of Tsetse-fly. of classifying flies. In the flies that have long, slender, many- segmented antennse the palps also, as a rule, are long, slender, and flexible, and usually consist of 4 or 5 segments. In the flies that have an antenna of 3 segments and a dorsal bristle, such as the house-fly, the palps are unsegmented and stiff In flies such as the gadfly the palps, which also are stiff, are composed of 2 segments. In some flies
. Entomology for medical officers. Insect pests; Insects as carriers of disease. palp,.. epiph. pseudolracfieae^^ /-/ff/6>/ Pio. 3.—Head of Pig. 4.—Thorax of Tsetse-fly. of classifying flies. In the flies that have long, slender, many- segmented antennse the palps also, as a rule, are long, slender, and flexible, and usually consist of 4 or 5 segments. In the flies that have an antenna of 3 segments and a dorsal bristle, such as the house-fly, the palps are unsegmented and stiff In flies such as the gadfly the palps, which also are stiff, are composed of 2 segments. In some flies ( Glossind) the palps form a loose adjustable sheath for the proboscis. The thorax (Fig. 4) is deep, and has much the form of an inverted pyramid. The three thoracic segments are firmly united, though the sutures between them can be distinguished. The prothorax is so much contracted that in a dorsal view. 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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Keywords: ., bookcentury1900, bookdecade1910, bookpubl, booksubjectinsectpests
