Fertilization is carried out by insects including flies and true bugs. Mosquito larvae have been investigated as prey of other Dipteran flies. Pollinators include moths, flies, and ants. The number of flies and mosquitoes is appalling. This is clearly visible in the wings of many flies and wasps. Superficially, mosquitoes resemble crane flies (family Tipulidae) and chironomid flies (family Chironomidae). Repellents provide some protection against biting flies. The owl flies overhead, carrying away the crown. It often flies and sits in flocks. Renfield is obsessed with eating flies and spiders. A bat flies above them and squeaks to Mina. The crane, seeing him, flies away and never returns. The Predators' spaceship flies off, leaving Lex behind. Parasites of millipedes include nematodes, phaeomyiid flies, and acanthocephalans. Once fully reassembled, the ship then flies away.