Appearance
"M. equestris" is on average 12 millimetres in length and is orange, black and yellow in colour.The legs of this species are always black. Patterns of venation on the wings can be used to identify the species.
Distribution
"M. equestris" is a species native to Europe and namely the British Isles. It has been documented in North America, where it may have been introduced.
Food
The adult "M. equestris" feeds on the pollen and nectar of flowers from the genera "Lilium" and "Narcissus".The larvae of these flies are known pests found on the bulbs of these flowers, leading to the names bulb fly and Narcissus fly. This is unlike most other members of the family, which predate on aphids.
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