Report on the Insects Found in Foods and FoodProducts in Hokkaido

Abstract

It was investigated in this report on the insects found in foods and food products in Hokkaido during the period of 1968 and 1969. All of 69 cases were listed up in this report for these two years.
The number of identified species of insects in these cases was 35, belonging to 8 orders, i. e. THYSANURA, COLLEMBORA, ORTHOPTERA, PSOCOPTERA, HEMIPTERA, LEPIDOPTERA, COLEOPTERA and DIPTERA.
Among them Plodia interpuctella is the most important species in Hokkaido, and larvae of this moth were found in 27 cases. Of those cases 15 were reported in September, and 6 and 5 cases were found in August and October, respectively.