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Grain weevil

This species of pantry pest actually has two quite similar members – the Rice Weevil (Sitiphilus oryzae) and the Granary Weevil (Sitiphilus granaries).

Size: both adult species are 2.5 – 4mm long and their respective larvae grow to approximately 4mm in length.

Color: Rice Weevils tend to be reddish-brown in color with 4 pale spots on their body. Granary Weevils don’t have spots and are dark brown to black in color

Breeding: life cycles of these weevils will be 4 – 6 weeks but adults can live up to 6 months.

A primary pest of grain, both these weevils could be considered the most destructive pest of stored products. The female bores a hole in a grain kernel where the larvae will develop. Both the adult and larvae consume mostly grains such as wheat, rice, maize, barley, and oats but will occasionally attack other stored foods such as spaghetti.

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