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Lesser rice weevil (Sitophilus oryzae)


The rice weevil is very similar to the grain weevil. It is about 3 mm long and, in contrast to the grain weevil, able to fly. Four vague reddish spots are seen on the wing cases of this brown-black beetle. This species is somewhat more thermophilic than the grain weevil. Development and habitus are the same.


The damage caused by the rice weevil is comparable to what is seen with the grain weevil. Above all, this species occurs in warmer countries and can infest grain that is still in the field. Changed storage conditions with warmer temperatures have resulted in a steady spread of this species in our temperature zones.