. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. PHLEB0T0MU8 FLIES 467 The phlebotomus flies (Fig. 212D) are small dull-colored in- sects, usually yellowish or buff, slender in build, with hairy body and very long and lanky legs. The hairy-veined wings are narrow, somewhat the shape of mosquito wings, and are held erect over the body when the insect is in repose. The wings are quite remarkable for the inconspicuousness of the crossveins which gives them the appearance of having nine or ten nearly parallel longitudinal veins. The antennse are long, con
. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. PHLEB0T0MU8 FLIES 467 The phlebotomus flies (Fig. 212D) are small dull-colored in- sects, usually yellowish or buff, slender in build, with hairy body and very long and lanky legs. The hairy-veined wings are narrow, somewhat the shape of mosquito wings, and are held erect over the body when the insect is in repose. The wings are quite remarkable for the inconspicuousness of the crossveins which gives them the appearance of having nine or ten nearly parallel longitudinal veins. The antennse are long, consisting of a series of beadlike segments with whorls of hairs at the joints. The. Fig. 212. Life history of piilebotomus fly, Phlebotomus papaiasii; A, egg; B, larva; C, pupa; D, adult. A, X 80; B, C and D, X 8. (After Newstead.) relatively long proboscis is made up in practically the same way as is that of a mosquito (see p. 426), except that the needle-like organs project beyond the tip of the sheath made for them by the labium or lower lip. These insects are usually less than one-fifth of an inch in length and often not over one-eighth of an inch; they can easily crawl through the meshes of an ordinary mosquito net, and are therefore hard to avoid. Their bites are very annoying and cause an amount of irritation which seems quite out of proportion to the size of the insects. In most cases it is only the female which sucks blood, but in some species the. 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 Chandler, Asa Crawford, 1891-. New York, J. Wiley
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