Eristalis tenax
A commonly encountered hoverfly is Eristalis tenax, more often referred to as the Drone Fly. It is one of several honey bee mimics and is found in a variety of habitats and adults are active on sunny days throughout much of the year. The adults hibernate and can even be found on particularly warm January and February days. They feed on nectar from flowers, but the larvae feed on rotting organic material in stagnant water and are sometimes known as Rat-tailed Maggots.
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UK distribution of Eristalis tenax
 

The UK distribution maps on eakringbirds.com are provided by the National Biodiversity Network (NBN Gateway) Each red square on the map indicates species present in 10km grid squares.

Updated September 2011

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