Grain weevil

Grain weevil

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Caption: Grain weevil. Coloured scanning electron micrograph (SEM) of a grain weevil (Sitophilus granarius) emerging from a wheat grain. The beetles infest and feed on stored grain. They puncture the grains' outer layers and use their long snouts (or rostrums) to feed on the material within. Females also lay their eggs in holes excavated in this way, ensuring a supply of food for the developing larvae. Grain weevils are a serious pest of grain supplies. Their numbers are controlled by insecticides. Magnification: x20 at 6x7cm size.

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Keywords: animal, grain, grain weevil, insect, insecta, invertebrate, invertebrates, nature, pest, scanning electron micrograph, sem, sitophilus granarius, weevil, weevil emerges, wheat grain, wildlife, zoology

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