. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. LARViE AND OF DIPTERA 465 The larvae of Diptera may be simple maggots with minute heads and no appendages and capable of only limited squirm- ing movements, , the screw-worms (Fig. 250), or they may be quite highly developed, active creatures, , the larvae of mosquitoes, midges, etc. Many are aquatic, many others ter- restrial; usually the eggs are laid in situations where the larvae will find conditions suitable for their development, and the flies often show such highly developed instinc
. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. LARViE AND OF DIPTERA 465 The larvae of Diptera may be simple maggots with minute heads and no appendages and capable of only limited squirm- ing movements, , the screw-worms (Fig. 250), or they may be quite highly developed, active creatures, , the larvae of mosquitoes, midges, etc. Many are aquatic, many others ter- restrial; usually the eggs are laid in situations where the larvae will find conditions suitable for their development, and the flies often show such highly developed instincts in this respect that it is hard not to credit them with actual forethought. The pupae of the Diptera also vary widely. In one great suborder, Orthorrhapha, the pupa is protected only by its own hardened. 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 C. (Asa Crawford), 1891-1958. New York, J. Wiley & sons, inc. ; London, Chapman & Hall
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmedical, bookyear1918
