Both the beetle and the larva produce damage to the products. They have three pairs of legs and their bodies are divided into head, thorax and abdomen. During its life span of 5 months, it lays a total of about 250-400 eggs. The duration of life cycle of rice weevil and number of generations completed in a year depends upon the weather conditions, like temperature and humidity. EcO2 is a leading specialist in non-toxic fumigation. Head is projected forward into a snout like rostrum. In fact, it is the commonest pest that one encounters in all kinds of stores. Female rice weevil lays about 4 eggs/day. Identification: Adults are 3 – 4 mm, dark brown to black, and the elytra each have two dull orange spots, while flight wings (under elytra) are present, the thorax has circular shaped punctures, and the club-shaped antennae are kinked halfway. Sitophilus oryzae is supposed to be a native of India, although few are of the opinion that some temperate country is its original home. Feeble sexual dimorphism exists. These insects do not bite nor damage wood. Identification: Adults are 3 – 4 mm, dark brown to black, and the elytra each have two dull orange spots, while flight wings (under elytra) are present, the thorax has circular shaped punctures, and the club-shaped antennae are kinked halfway. Larger and healthier grains produce larger and healthier weevils. Both adults and larvae feed upon the grains and make them inconsumable. Each egg is tiny, white, oval structure measuring 0.7 m.m long and 0.3 m.m broad. The pupa undergoes major internal and external changes inside the grain to develop into an adult. These insects are cosmopolitan in distribution and have originated in Far East region. They will not feed on furniture, the house structure or other items. Distribution: Google ¦ ... J.K., and Tran, H.Q. There is generally no external evidence that the larvae have been eating until when the adult weevil chews through the seed coat and emerges. The damage caused by them may extent up to 50% of the total grain stored in a particular go down. Commodities infested: Cereal grains and solid cereal products e.g. (adsbygoogle = window.adsbygoogle || []).push({});
Attack is evidenced by, //
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