. Flies in relation to disease: bloodsucking flies. Flies; Flies as carriers of disease; Diptera. xiv] LIFE-CYCLE 229 The larvae may be found in rotting logs and stumps, in the soil at the edges of pools and streams, under stones in ditches, or swimming free in the water. If kept supphed with a diet of angle-worms the larvae can easily be reared, either in jars of moist earth, or in jars containing sand and water. As a rule they are cannibalistic in habit and only one can be reared in each jar, but T. biguttaius is an exception to this rule, and in this species several can be reared together i
. Flies in relation to disease: bloodsucking flies. Flies; Flies as carriers of disease; Diptera. xiv] LIFE-CYCLE 229 The larvae may be found in rotting logs and stumps, in the soil at the edges of pools and streams, under stones in ditches, or swimming free in the water. If kept supphed with a diet of angle-worms the larvae can easily be reared, either in jars of moist earth, or in jars containing sand and water. As a rule they are cannibalistic in habit and only one can be reared in each jar, but T. biguttaius is an exception to this rule, and in this species several can be reared together in the same receptacle. The larvae are cyhndrical in form, pointed at both ends ; the body is composed of eleven segments, each of which is usually encircled by a prominent fleshy ring, or row of Fig. 61. Egg-mass and mature larva of Tabanus kingi Austen, a, egg- mass, X 6 ; b, lateral view of larva, x 3 ; c, lateral view of 4th and 5th abdominal segments, x 6 ; d, posterior view of anal segment (inverted), X 6 ; e, lateral view of anal pseudopod. (After King.) which are most pronounced on the ventral side, where they serve as prolegs. The head is small, but distinct, and the mouth parts are very peculiar ; the mandibles are attached so as to move antero-posteriorly ; when they are retracted the anterior ends point forwards, but when extended they point downwards and backwards, thus forming a pair of hooks that serve to hold prey. The duration of the larval stage depends upon the temperature. In temperate countries the larva usually lives through 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 Hindle, Edward, 1886-. Cambridge, University Press
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjectdiptera
