Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . gated whenthey occur in numbers great enough to attract attention. Quite early in the season we may see large numbers of loose-jointed, ungainly flies of moderate size, with long, stout legs,heavy body, short, stout, though many-jointed antennae, and often, in the female, a ridic-ulously small head. Incolor they are black, orblack and yellow, or belong to the familyBibioiiidce, sometimescalled March-flies, fromtheir early appearance ; andwhile their larvae are some-
Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . gated whenthey occur in numbers great enough to attract attention. Quite early in the season we may see large numbers of loose-jointed, ungainly flies of moderate size, with long, stout legs,heavy body, short, stout, though many-jointed antennae, and often, in the female, a ridic-ulously small head. Incolor they are black, orblack and yellow, or belong to the familyBibioiiidce, sometimescalled March-flies, fromtheir early appearance ; andwhile their larvae are some-times feeders on grass roots,they never become eco-nomically important. Theyare mentioned here becausetheir early appearance ingreat numbers sometimes at-tracts attention. They areoften plentiful in orchardsjust when the blossomsopen, but seem not to beof any service in poUen-izing. Black flies, or gnats, are in some localities serious peststo man and domestic animals. The black flies of the North-ern woods and the buffalo- and turkey-gnats of the South-ern and Mississippi States are good examples. They are rather. Bibio albipennis.— a, male; c, its head; b, k-male; d, her head ; e, f, g, other structuraldetails. Till: IXSECT WORLD. 341 undersized, chunky flics, dark in color, with the thorax welldeveloped and somewhat produced forward so as to partiallyconceal the small head from above. Though the head is smallin proportion to the insect, the mouth parts are exceedinglywell developed and furnished with a formidable array of ^^- 389- lancets for puncturing andblood-sucking-. They belongto the natural family Simu-liidcB, and are distinguished,in addition to the peculiari-ties enumerated above, byshort, broad wings, in whichthe venation is almost obso-lete, except along the frontmargin. The larvae are curious littlecreatures, living under waterin rather swiftly flowingstreams, clinging to rocks,sticks, or logs, and feedingupon vegetable matter. Theyare furnished with sucker-lik
Size: 1403px × 1782px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectp, bookyear1906
