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home / Insecta · vabzdžiai / Diptera · dvisparniai / Syrphidae · žiedmusės / Criorhina ranunculi · žiedmusė

Criorhina ranunculi
žiedmusė Criorhina ranunculi · žiedmusė
Criorhina ranunculi
žiedmusė Criorhina ranunculi · žiedmusė

Criorhina ranunculi · žiedmusė

Large Bear Hoverfly
Große Pelzschwebfliege
hommelwoudzwever
svart pelsblomsterflue, svart pelsblomsterfluge
nieczuja wczesna
humlelik pälsblomfluga, stor pälsblomfluga

It has a Palaearctic distribution, including southern Norway and Sweden south to central Spain, and from Ireland eastwards through central Europe into European parts of Russia. Habitat: deciduous forests with old trees. This species is observed almost exclusively on flowering willows, plums, cherries, maples and other early spring flowering shrubs or trees; most often in flight – they perch on flowers for a moment, preferably as high as possible. The larvae develop in the damp rotting roots and low heart-rot of mature trees (perhaps especially oaks), and females can sometimes be seen investigating the bases of such trees to oviposit or resting on tree trunks.

Body length 14-18 mm. Massive, hairy, perfectly flying hoverfly imitating a bumblebee. Variable coloration, usually the thorax and abdomen are black; the top of the abdomen is white or yellow-orange. Among the many color forms, there are almost completely black individuals or, on the contrary, clearly light ones. The face, characteristically for the entire genus, is stretched forward and slightly down. The forehead of the male is much narrower than that of the female – the eyes of both sexes are separated. Scutellar hairs may be pale yellow or brownish. Hind femora considerably thickened, especially in males. Hind tibiae sickle-shaped. Transparent wings with a zigzag blackening at the transverse vein.