Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . Carrion beetles.—a, Necrophorus amcricana ; b, larva of Siipha lapponica ; c, Siipha americana. are much flattened and proportionately very broad, with smallheads, and on the other by the genus Necrophorus, in which thespecies are much more heavily built, narrower, not flattened, andwith large heads. These are the true burying beetles, andderive the name from their habit of excavating beneath smalldead animals and gradually sinking them below the surface the female
Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . Carrion beetles.—a, Necrophorus amcricana ; b, larva of Siipha lapponica ; c, Siipha americana. are much flattened and proportionately very broad, with smallheads, and on the other by the genus Necrophorus, in which thespecies are much more heavily built, narrower, not flattened, andwith large heads. These are the true burying beetles, andderive the name from their habit of excavating beneath smalldead animals and gradually sinking them below the surface the females lay their eggs in and the larvEe live upon theburied and decaying creatures. The other carrion beetles makeno pretence of burying their prey, but lay their eggs at once,and the larvae feed upon it from below, usually making a shortburrow in the soil for shelter, though this is not universal. Inboth types the larvae are black, flattened, broadly oval, and with. 172 AN ECONOMIC ENTOMOLOGY. the segments distinctly marked at the edges. These beetles havethe sense of smell wonderfully developed, and I have frequentlycovered a small, freshly-killed animal with a box of wood ortin, only to find next morning a number of the insects beneathit. The species are generally nocturnal, and as scavengers areuseful, or at least innoxious. The large series of rove-beetles, or Staphylinidce, is pecu-liar in the short wing-covers, which leave more than half theabdomen exposed. The species are always- long and comparatively narrow, usuallywith a large head and well-developed man-dibles, and live in all sorts of fermenting,decaying, or excrementitious animal orvegetable matter. Most of them are small,and many are found beneath bark, in fer-menting sap, or in fungi, while the largerforms are often found in or under animal, „ .... excrement, or on or under carrion. In Rove-beetle and its larva. short, the species are scavengers, with atendency to a predatory hab
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectp, bookyear1906
