. Bulletin of the Department of Agriculture. Agriculture. Fig. 1.—The Indian-meal moth (Plodia interpunctella): a, Moth; b, pupa; c, larva; /, same, dorsal view; d, head, and e, first abdominal segment of larva. /, Somewhat enlarged; d, e, more enlarged. (After Chittenden.) There are several insects which attack stored cereal prod- ucts. Among the more important are the Indian-meal moth (Plodia interpu7ictella Hiihn.) (fig. 1), the Mediterranean flour moth (Ephestia Icuehniella Zell.) (fig. 2), the meal snout-moth (Pyralis farinalis L.), the saw-toothed grain beetle (Silvanus surinamensis
. Bulletin of the Department of Agriculture. Agriculture. Fig. 1.—The Indian-meal moth (Plodia interpunctella): a, Moth; b, pupa; c, larva; /, same, dorsal view; d, head, and e, first abdominal segment of larva. /, Somewhat enlarged; d, e, more enlarged. (After Chittenden.) There are several insects which attack stored cereal prod- ucts. Among the more important are the Indian-meal moth (Plodia interpu7ictella Hiihn.) (fig. 1), the Mediterranean flour moth (Ephestia Icuehniella Zell.) (fig. 2), the meal snout-moth (Pyralis farinalis L.), the saw-toothed grain beetle (Silvanus surinamensis L.), the confused flour beetle (Tribolium. confusum Duv.) (fig. 3), the granary weevil (Calandra granaria L.), and the rioe weevil (Calandra oryza L.). These are the principal insects which are likely to infest packed cereals. Tliere is an errone- ous opinion with some people that the cereals become infested by spontaneous genera- tion. This, however, is impossible; and when any insects are found in packages it is because the eggs, larvae, or adults have gained access to the cereal after it has been sterilized. EXPERIMENTS IN CALIFORNIA. Using the foregoing observations as a basis, the foUowing experi- ments were conducted, the idea being to test tlie efficiency of a cheap sealed carton. A cereal was sterilized to such an extent tliat when it was placed in a package the temperature developed was 180° F. The packages themselves were sterilized before being filled, but had there been any. Fig. 2.—The Mediterranean Qonrmoth (Ephestia kuehniella): a. Moth; 6, same from side, resting; c, larva; d, pupa; c, abdominal segments of larva. a-tZ, Enlarged; c, more enlarged. (After Chittenden.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Departm
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