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The rice weevil (Sitophilus oryzae) is a stored product pest which attacks seeds of several crops, including wheat, rice, and maize. Description.
The maize weevil (Sitophilus zeamais), known in the United States as the greater rice weevil, [1] [2] is a species of beetle in the family Curculionidae. It can be found in numerous tropical areas around the world, and in the United States, and is a major pest of maize . [ 3 ]
The wheat weevil can live on acorns, and may have used them as a host before agriculture made grain plentiful. The rice weevil can live on beans, nuts, grains, and some types of fruit, such as grapes. [7] Several other Sitophilus use the acorns of oaks such as bluejack oak (Quercus incana) and moru oak (Q. floribunda).
A separate species of rice water weevil, Lissorhoptrus brevirostris is present in Cuba, Dominican Republic, Colombia, Suriname and Venezuela. Lissorhoptrus oryzophilus began spreading through the rice growing regions of Asia in 1976 (China, India, Japan, Korea and Taiwan); in Europe it has been present in Italy since 2004, in the regions of the ...
Most weevils have the ability to fly (including pest species such as the rice weevil), [2] [3] though a significant number are flightless, such as the genus Otiorhynchus, and others can jump. One species of weevil, Austroplatypus incompertus , exhibits eusociality , one of the few insects outside the Hymenoptera and the Isoptera to do so.
A storage pest is an insect or other animal that damages or destroys stored food or other stored valuable organic matter. [1] Insects are a large proportion of storage pests with each type of crop having specific insects that gravitate towards them such as the genus Tribolium that consists of insects such as Tribolium castaneum (red flour beetle) or Tribolium confusum (confused flour beetle ...
Adult wheat weevils are about 3–5 mm (0.12–0.20 in) long with elongated snouts and chewing mouth parts. [2] Depending on the grain kernels, the size of the weevil varies. In small grains, such as millet or grain sorghum, they are small in size, but are larger in maize (corn). [ 3 ]
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