Investigation on Ecology of Injurious Insects in Milk Powder

Abstract

The ecology of injurious insect in the milk powder was surveyed using opened and closed traps.
Injurious insects caught at 31 homes were classified two groups, Insecta and Acaridae. Most of them appeared between June and October through the year. On these available data, it was the most interesting result that Palidae and Psocoptera were found in the milk powder stored in closed can. Two causes of invasion of injurious insects were supported, one of the causes was the structural defect of the can stored milk powder and another was careless control of it by the consumer.