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Corn moth (Nemapogon granella)

Biology:

The corn moth, with a wingspan of 14 mm, is among the smallest stored product pest moths. The black-brown forewings are chequered in white and yellow with grey-brown fringes. The caterpillars are whitish yellow and reach a length of approx. 10 mm. The corn moth originally lived on bracket fungi.

Damage:

Besides cereal grains, of which the germ is preferred, the corn moth also infests seeds, legumes, dried fruit, almonds, dried mushrooms and sometimes even rotten wood. The caterpillar is light-shy and pupates in hollowed-out grains. Cocoon spinning and faeces cause the infested foodstuff to form clumps and give off an unpleasant odour.

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