Summer Infestation of Farm-Stored Grain by Migrating Insects

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Abstract
Migrating insects constitute an important source of infestation for wheat stored on the farm. A study of the migration of stored grain insects was conducted at the exptl. wheat-storage site at Hutchinson, Kansas, during 1941 and 1942. Three methods of trapping insects were used[long dash]tanglefoot screens, a revolving insect trap, and bin-ventilator traps. The greatest numbers of insects were trapped during July, Aug., and Sept. In the revolving trap the greatest daily flight occurred between 6 p.m. and dusk. Of the grain-infesting species, the flat grain beetle (Laemo-phloeus minutus), was taken in greatest abundance. Other spp. taken in large numbers were the foreign grain beetle (Ashasverus advena), lesser grain borer (Rhizopertha dominica), and the hairy fungus beetle (Typhaea stercorea).

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