Coloured SEM of a grain weevil, Sitophilus

Coloured SEM of a grain weevil, Sitophilus

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Caption: Grain weevil. Coloured scanning electron micro- graph (SEM) of a grain weevil Sitophilus granarius on a plant stem. This beetle infests and damages stored grain. The head is at upper right with a compound eye seen. There is an elongated snout, called a rostrum, which has blade-like mandibles at its tip. The rostrum bores through the fibrous coat of a wheat grain and the mandibles chew and crush the kernel. Female weevils insert their eggs in cavities dug in the kernel, ensuring a food supply for the larvae. Fumigants are used on the weevil if stored grain infestations occur. Magnification: x9 at 6x7cm size.

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Keywords: animal, grain, grain weevil, insect, insecta, invertebrate, invertebrates, nature, on stem, sitophilus granarius, weevil, wildlife, zoology

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