Pest description and damage The flesh fly, is a parasite of the alkali bee egg. It has only been found parasitizing alkali bees only in Idaho and Utah. The adult is about the size of a house fly and has and abdomen with three bands of black, alternating with three bands of silvery grey, and red terminal segments. Adult female flesh flies deposit newly hatched maggots in or near the nest of the alkali bee. Flesh fly maggots craw into a bee cell killing the alkali bee egg or larva and eating the pollen ball. Only one maggot can develop in each cell, but leaves the cell o pupate.
Management No control is known.