Corn moth (Nemapogon granella)
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.
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.back