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 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Berger, Juergen |
Taille de l’image : | 3858 px × 4464 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |