WildSnapField Guide
Insects

Margined Calligrapher

Toxomerus marginatus

Photograph of Margined Calligrapher (Toxomerus marginatus)
Photo: (c) Denis Doucet, some rights reserved (CC BY-NC), uploaded by Denis Doucet (CC-BY-NC) · source

What it is

Toxomerus marginatus, is a common species of hoverfly. It is found in many parts of North America.

Where and when to find it

Habitat
You can find Margined Calligraphers in gardens, meadows, fields, and woodlands across most of North America, including nearly all of the United States.
How to find it
Look for them hovering near flowers, especially composites like daisies or asters. Watch them 'hover' in mid-air like a tiny helicopter. Try to spot their short antennae and large eyes to tell them apart from bees.
Best time of day
Spring through fall, active during sunny daytime hours.

How it lives

What it eats
Nectar and pollen from flowers as an adult; larvae eat aphids.
What eats it
Birds, spiders, predatory insects (if they aren't fooled).

Worth knowing

  • This fly is a 'mimic'; it looks like a stinging bee to protect itself.
  • You can tell it's a fly, not a bee, because it has only two wings (bees have four).
  • Its larvae are tiny, slug-like creatures that eat garden pests.
  • They are also known as hoverflies or flower flies.
  • They perform an amazing 'hovering' flight, staying perfectly still in the air.
  • They help pollinate many of our favorite fruits and vegetables.

Why it matters

Margined Calligraphers are important pollinators, helping many plants. Their larvae also eat aphids, helping gardeners.

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