Numbers
Nearctica lists 22 species.
Identification
"Slender, elongate flies. Their abdomen is claviform with segment 2 constricted and segment 3 and 4 broadened, a feature very prominent in the female. Their colour is dark, even blackish. Some species have reddish markings on tergite 3 and 4."
Netherlands syrphidaeHabitat
"Found in shaded parts of humid coniferous and deciduous forest, in association with running waters. Adults fly through the vegetation and are found visiting flowers of white umbellifers and a selection of other flowers in the forest edge.
The larvae have been found in wet, sappy material beneath a patch of wet bark on a living Ulmus. Larvae have also been found under the bark of water-logged branches of various deciduous trees and in sap runs on Quercus and Ulmus."
Netherlands syrphidae
