. A manual of zoology. Zoology. 492 Fig. 530.—il/iwfa, house fly (orig.). the Hymenoptera, sharply marked oif from head aiid abdomen, its somites being frequently fused. The development is holometab- olous, two kinds of larvai and pupa3 occurring in its course. The larvaj are always apodal, but have either a distinct head with biting mouth parts or they are headless and liave a rudimen- tary sucking apparatus (fig. 531). The pupa? are corresj^ondingly either free with powers of motion, or are jiuj^ffi coarctataj (p. 474). De- velopment thus affords characters of systematic import
. A manual of zoology. Zoology. 492 Fig. 530.—il/iwfa, house fly (orig.). the Hymenoptera, sharply marked oif from head aiid abdomen, its somites being frequently fused. The development is holometab- olous, two kinds of larvai and pupa3 occurring in its course. The larvaj are always apodal, but have either a distinct head with biting mouth parts or they are headless and liave a rudimen- tary sucking apparatus (fig. 531). The pupa? are corresj^ondingly either free with powers of motion, or are jiuj^ffi coarctataj (p. 474). De- velopment thus affords characters of systematic importance, and these are supplemented by dif- ferences in length of legs, autenna\ haustellum, Fig. .531.— Larva of and in body forms. In number of species the laiis. (After Leuck- Diiitera stand next to the toleoptera; m num- ^''*' ber of individuals they far exceed them. Sub Order I. NEMOCERA. Elongate with long, many-jointed antennie, long proboscis, long legs. ThelarviB live in damp places or in water, where, lacking legs, they swim by movements of the body. The pupa? can also swim well. Best known are tlio innocuous crane flies () and the mosquitos (Culicid/E) wilh tlieir numerous species aftecting man, among thera the forms which carry yellow fever, and Anopheles,* which distribute malaria. The Ceoidomyid^ include the injurious Hessian fly, Cecidomyia destructor,''' and the piodogenotio Miastor (fig. 498). Sub Order II. TANYSTOMA. Resemble the Muscarias (with whieli. 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 Hertwig, Richard, 1850-1937; Kingsley, J. S. (John Sterling), 1854-1929. New York, H. Holt and Company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1902
