. Annual report of the North Carolina Agricultural Experiment Station. Fig. 7.—Common Bean Weevil, Bruchus obtedus: a, beetle; &, larva ; c, pupa—allgreatly enlarged. (Chittenden, Yearbook, 1898, U. S. Dept. of Agr.) rendering them unfit for food or seed. Infested beans are readily de-tected, upon examination, as every housekeeper could testify. Manypeople believe that beans become infested only after they are stored,and such may at times be true, but a large proportion are first in-fested in the field or garden. LIFE HISTORY AND HABITS. Dried stored beans once infested with weevils may contin
. Annual report of the North Carolina Agricultural Experiment Station. Fig. 7.—Common Bean Weevil, Bruchus obtedus: a, beetle; &, larva ; c, pupa—allgreatly enlarged. (Chittenden, Yearbook, 1898, U. S. Dept. of Agr.) rendering them unfit for food or seed. Infested beans are readily de-tected, upon examination, as every housekeeper could testify. Manypeople believe that beans become infested only after they are stored,and such may at times be true, but a large proportion are first in-fested in the field or garden. LIFE HISTORY AND HABITS. Dried stored beans once infested with weevils may continue to be-come worse infested by successive generations. If not disturbed the 16 N. C. AGRICULTURAL EXPERIMENT STATION. weevils may produce five or six generations each year and single beansmay contain a number of weevil larvae at one time. Ordinarily, beans first become infested in the field, the weevils de-positing eggs through slits or cracks in the green pods, and the larvae, as soon as formed, bore into the beans. Their presence isindicated only by a sma
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