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Drone Fly, Rat-tailed Maggot (Eristalis tenax)

Order: Diptera (DIP-ter-a) (Info)
Family: Syrphidae
Genus: Eristalis
Species: tenax


This bug has been reportedly found in the following regions:

Deer, Arkansas
Nokomis, Florida
Elkhart, Indiana
Benton, Kentucky
Albertville, Minnesota
, Newfoundland and Labrador
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Members' Notes:


On Jun 23, 2007, wallaby1 from Lincoln,
United Kingdom (Zone 8a) wrote:

This fly is harmless, it resembles a drone worker bee hence the name. It is quite large, has no narrow waist, the eyes are typical of a fly and it has no sting!

This can easily be confused with other Eristalis, in particular E. pertinax but also E. arbustorum. With careful observation and research I have found the main differences.

The tibiae of the hind legs on E. tenax are dark, with little or no yellow on the legs. E. pertinax has bicoloured tibiae on the hind legs.

E. tenax has a more distinct, broader dark stripe down the centre of the face than E. pertinax, while E. arbustorum has no stripe or very little.

E. tenax has a near cylindrical abdomen, the female is variable and sometimes has little or no orange pattern. E. pe... read more


On Sep 8, 2006, melody from Benton, KY (Zone 7a) wrote:

This fly actually looks like a bee. It feeds on nectar and is common throughout most of North America.