Neoascia geniculata (Meigen, 1822)
Biology & ecology:
The small, semi-aquatic larva has been found in decaying vegetation around the margins of ponds. Usually swept from lush emergent vegetation, such as Reed Sweet Grass Glyceria maxima, around ponds and ditches. Adults visit flowers, especially buttercups Ranunculus sp., but do not seem to move far from larval habitat.
Very widely distributed but probably under-recorded owing to the difficulty of identification.
Status & conservation:
A general trend of decline has been detected, in keeping with many wetland species.