Hover Flies


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Hover Flies

 

(Syrphidae), a family of dipterous flies of the suborder Brachycera. The flies are usually of average size (5–15 mm); less frequently they are large (up to 25 mm). There are about 4,000 species. They are found mainly in the tropics. In the USSR there are about 600 species. They fly well and often hover in the air. They are important in the pollination of plants, especially cultivated crops. Representatives of the various Syrphidae genera develop differently. Larvae of the genus Syrphus and other predatory members of Syrphidae live openly on plants, feeding mainly on aphids, thus benefiting the plant. Larvae of other genera (for example, Eristalis) live in water, feeding on decomposing matter and silt. The larvae of many genera are herbivorous; they live in the stems or bulbs of some herbaceous plants. The latter group includes small narcissus flies (Eumerus strigatus and E. tuberculatus), which are very harmful to onion bulbs. The larvae of some Syrphidae live in the nests of “social” Hymenoptera (bumblebees, wasps, and ants).

REFERENCE

Opredelitel’ nasekomykh Evropeiskoi chasti SSSR, vol. 5, part 2. Leningrad, 1970.

A. A. SHTAKEL’BERG

References in periodicals archive ?
Moreover, the treated cotton created severe competition among natural enemies (top significant predators coccinellids, chrysopids, hover flies and bigeyed bugs) indirectly through the removal of adults, eggs, larvae and pupae of insect pests that serve as food sources for predatory arthropods.
Biological control has asserted itself as beneficial insects such as praying mantids, assassin bugs, green lacewings, lady beetles, ground beetles, and hover flies rule supreme.
JIM BRADY watched house martins still feeding young at a nest on Prescot High Street this week, and, in the walled garden of Prescot vicarage nearby, had red admiral, speckled wood and comma butterflies feeding alongside wasps and hover flies.
He covers everything from the stunning aerobatics of hover flies in a Bristol gardento the mass migration of purple crow butterflies in Taiwan.
But when an expert (which I am not) compares the collective value in terms of pest insect control of those five beneficials (lacewings, lady beetles, hover flies, wasps and tachinid flies) with the collective impact of ants, spiders and ground beetles/bugs (the Big Three), there is no comparison.
The larvae of the hover flies, for instance, are among the hungriest and fiercest of the aphid hunters, so you'll want some of them.
The globes - each about one and a half inches across - will attract a host of bees and hover flies into the garden.
These plants attract hover flies, lacewings, ladybugs, bees, parasitic nematodes and wasps and spiders - your allies in pest control.
They produce lots of yellow flowers edged with white, which attract bees and hover flies.
The bees love them as well as the hover flies which prey on aphids and the birds in autumn love the seed heads which provide food through the winter.
And using marigolds among vegetables attracts hover flies (whose larvae are great at munching pests).