Characteristics: 3-4mm, clubbed antenna , dimpled thorax, dark brown
Eggs: up to 350 per female at a rate of 1-2 per day over a nine month period
Larvae: legless grubs living totally within cereal grains, develop three weeks to three months
Pupae: Adults bite hole to emerge, leaving grain as empty husk
Adults: Incapable of flight, live on more than a year
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