Dew fly or vinegar fly

Drosophila melanogaster

Small, approx. 2-3 mm long fly with yellow-brown coloration, red eyes and black abdominal rings. It lays its eggs on plant substrates. Larvae are white, stocky and 3 mm long. Infestation is possible all year round in warm weather, but mainly from late summer when there is plenty of spoiling fruit and rotting plant debris. Damaged, cut fruit, fruit pies, fruit juice, cider, beer, milk, rotting plant remains and waste are infested and covered with eggs. In particular, yeast fungi and vinegar bacteria are transmitted. They often occur in small swarms.