Bug Squad
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Drone Fly: Good Pollinator

Yarrow, yarrow, yarrow.

Drone fly, drone fly, drone fly.

This little insect is often mistaken for a honey bee.  In the adult stage, both the drone fly and honey bee nectar flowers. However, the drone fly is a syrphid fly (family Syrphidae, subfamily Eristalinae, tribe Eristalini, genus, Eristalis). Like all syrphids, it has two wings. The honey bee has four.

Other distinct differences tell you it's a fly, not a bee. It's amazing, though, how often stock photos proclaim "honey bee" when the insect is actually a drone fly.

In its larval stage, the drone fly is known as a rat-tailed maggot. You'll see it in stagnant water, such as in ditches, ponds and drains. It feeds on stagnant rotting organic material.

We spotted this drone fly sipping nectar on a brilliant yellow yarrow (Achillea millefolium). If you look closely, you'll see yellow pollen clinging to its abdomen.


Flies, too, are pollinators!

DRONE FLY (Eristalis tenax) crawls on yarrow. (Photo by Kathy Keatley Garvey)
Drone Fly
SIDE VIEW of a drone fly, Eristalis tenax. The insect is often mistaken for a honey bee. (Photo by Kathy Keatley Garvey)
Side View
LIKE A HONEY BEE, the drone fly (Eristalis tenax) pollinates flowers. Check out the yarrow pollen clinging to its abdomen. (Photo by Kathy Keatley Garvey)
Yellow Pollen