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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.
Rice water weevils go through 1 generation in Japan and California, but in parts of southern China and the southern US they will undergo up to 3-4 generations per year. The adults feed on leaves and the sheath leaving diagnostic feeding scars which can help gauge the severity of an infestation. the adults will lay eggs beginning in March ...
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 ...
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 ]
Sitophilus is a genus of weevils in the tribe Litosomini.Some species are familiar as pests of stored grain, nut, or seed. Notable pest species include the rice weevil (S. oryzae), wheat weevil (S. granarius), and maize weevil (S. zeamais).
The adult rice weevil has an orange-black exoskeleton and lays up to 450 eggs in pores of the damaged grains with each hatched egg further damaging the grain from the inside. Similarly to the lesser grain borer, maturation also happens inside the grain with the matured adult rice weevil eating through the husk of the grain to get out.
Wheat weevils are pests of stores of grains of the cereal crops wheat, oats, rye, barley, rice and maize. Unfortunately the impact of wheat weevils worldwide is unknown because information is not well shared. It is believed to be especially bad in places where the grain harvests are not accurately measured.
Another species Candidatus Sodalis pierantonius str. SOPE is known as endosymbiont of rice weevil (Sitophilus oryzae) and can supply rice weevil with essential vitamins like pantothenic acid, riboflavin, and biotin. [7] A species of bacteria within this genera, Sodalis glossinidius, was found in the hemolymph of the tsetse fly (Glossina ...