Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . ing fruit flowers. The hairs composing the vestiture arefurnished with little spurs or processes, or are twisted, so thatpollen grains adhere readily. They are especially useful incross-pollenation from their habit of flying considerable larvae, on the other hand, are parasites, and distinctly bene-ficial in many instances. They prey upon the larvae of Lepidop-tera, including many of the cut-worms, and also infest the egg-pods of grasshoppers, forming one of the
Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . ing fruit flowers. The hairs composing the vestiture arefurnished with little spurs or processes, or are twisted, so thatpollen grains adhere readily. They are especially useful incross-pollenation from their habit of flying considerable larvae, on the other hand, are parasites, and distinctly bene-ficial in many instances. They prey upon the larvae of Lepidop-tera, including many of the cut-worms, and also infest the egg-pods of grasshoppers, forming one of the effective checks of themigrating or Rocky Mountain locusts in this country. Theyare less beneficial when parasitic upon bees and other Hyme-noptera, but altogether the family may be said to contain chieflyuseful species. Sometimes we find in houses, under carpets, a slender littlelarva nearly white in color, with a darker, rather indistinct, head,but without obvious legs. It is usually looked upon with sus-picion because of the locality in which it is found, but as a matter 346 ^jv economic entomology. Fig. :, 394, Anthrax hypomelas: a, larva; b, the flv pupa projecting from acut-worm pupa; c pupa; ./. Fig. 395, larva, with delails, of Systcrchus areas,parasitic m grasshopper egg-pods. Fig. 396, pupa and adult of Systa-chu, areas. THE INSECT WORLD. 347
Size: 1297px × 1927px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectp, bookyear1906
