. Entomology : with special reference to its biological and economic aspects. lants are only partially depend- Fructifying sprouts ofa fungus. Cordyceps raz7-nclii, arising from thebody of a white grub,Lachnostcrna. Slightlyreduced.—After Riley. the upper surtace 258 ENTOMOLOGY ent on insect-food, however, for they all possess chlorophyll. Bacteria cause epidemic diseases among insects, as in theflacherie of the silkworm; and fungi of a few groups are spe-cially adapted to develop in the bodies of living insects. Those who rear insects know how frequently caterpillars andother larvae are destr
. Entomology : with special reference to its biological and economic aspects. lants are only partially depend- Fructifying sprouts ofa fungus. Cordyceps raz7-nclii, arising from thebody of a white grub,Lachnostcrna. Slightlyreduced.—After Riley. the upper surtace 258 ENTOMOLOGY ent on insect-food, however, for they all possess chlorophyll. Bacteria cause epidemic diseases among insects, as in theflacherie of the silkworm; and fungi of a few groups are spe-cially adapted to develop in the bodies of living insects. Those who rear insects know how frequently caterpillars andother larvae are destroyed by fungi that give the insectsa powdered appearance. These fungi, referred to the genusIsario, are in some cases known to be asexual stages of formsof Cordyccps, which forms appear from the bodies of variouslarvae, pupae and imagines as long, conspicuous, fructifyingsprouts (Fig. 250). The chief fungus parasites of insects belong to the largefamily Entomophthoracese, represented by the common Empusaimisc(C (Fig. 251) which affects various flies. In autumn. Fig.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectentomology, bookyear1
