Order Diptera Subfamily Syrphinae Rank Species | Family Syrphidae Tribe Syrphini | |
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Similar Chrysotoxum, Hoverfly, Fly, Insect, Chrysotoxum bicinctum | ||
Hoverfly chrysotoxum cautum feeding on water dropwort oenanthe aquatica
Chrysotoxum cautum is a species of hoverfly. It is found in southern Britain and Europe East into the Palearctic but is normally encountered in small numbers. The larvae are thought to feed on root aphids. Adults are usually found on the edges of woodland or scrub or along hedgerows where they visit a wide range of flowers.
Contents
- Hoverfly chrysotoxum cautum feeding on water dropwort oenanthe aquatica
- Hoverfly chrysotoxum cautum female
- Identification
- Distribution
- Biology
- References
Hoverfly chrysotoxum cautum female
Identification
External images For terms see Morphology of Diptera
Wing length 10ยท25-13 mm. Orange stigma.Apical antennomere as long as antennomeres 1 and 2 together.Abdomen relatively flat.The genitalia are exceptionally large and reach over the hind margin of sternite 4.
Keys and accounts
Distribution
Europe East across the Palearctic to Greece and Turkey and into Russia as far as the Altai mountains and Mongolia.
Biology
Habitat is deciduous forest and scrub, unimproved grassland and lightly grazed grassland , open areas in forest or scrub on well-drained sites.Flowers visited include white umbellifers; yellow composites, Allium ursinum, Caltha,Cornus, Crataegus, Euphorbia, Geranium, Plantago, Ranunculus, Rhamnus catharticus, Rubus and Sorbus aucuparia. The flight period is May to July (April in southern Europe).