David Element
Wildlife Photography and Digital Video Images
___________________________________________________________________________________________________________Flies 75 – Orange Bibio
Flies
ORANGE
BIBIO FLY Bibio hortulanus
(f)
·
One
of two sexually dimorphic British Bibionid (St. Mark’s) flies
with predominantly orange females (their heads and legs are black), the Orange
Bibio Fly Bibio hortulanus is predominantly found in East Anglia
where the above photograph was taken. The vernacular name only really holds
true for the females. This fly may be most readily separated from the more
widespread Downland Bibio Fly B. anglicus, a resident of calcareous downland
habitats, by the dark outer costal margins of the wings of the females when
they are seen at rest. Males are smaller, entirely black, rather hairy with
bulbous eyes, and perhaps easiest to identify by their association with females.
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