Hover Flies


Also found in: Dictionary.

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 ?
CHRISTINE SOMERS ABRING in pollinating insects, bees and hover flies with pollen and nectarrich flowers.
Hover flies are frequent flower visitors and are considered the second most important group of pollinators after wild bees.
Contrasts in the territorial behavior of 3 species of hover flies (Diptera, Syrphidae).
She said intensively mowing lawns has a detrimental effect on bees, hover flies and butterflies and is the basis of her Daywear for Butterflies frock.
They attract hover flies which predate on aphids, and this has been a bad year for greenfly and other pests.
If you love to hear bees buzzing, hover flies humming and sparrows chatting to each other, then a wildlife garden could be for you.
Tiny flowers are perfect for attracting delicate beneficials like chalcid wasps and hover flies, whose larvae devour aphids.
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.