Bee Fly

Anastoechus barbatus · Order: Diptera · Family: Bombyliidae

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Bee Fly
Photo: Marilynn Miller, CC BY

Its larvae hunt and eat grasshopper eggs.

Source: Wikipedia

What it eats

The larvae are predators of grasshopper eggs.

Source: Wikipedia

Where it comes from

It is found from the Yukon east to Ontario in Canada and from Massachusetts west to California and Texas in the US, absent from the southeast.

Source: Wikipedia

Where it is found in the US

Recorded in 17 of 51 states and DC. Most records: California, South Dakota, Utah, Minnesota, Wyoming, Colorado, Washington, Florida.

Darker = more records. Counts are museum and citizen-science records, not population size.

Source: GBIF

Status: native in North America; native in Canada. Source: iNaturalist

Months it is reported in the US

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Source: GBIF

More photos

Questions people ask

Where is Anastoechus barbatus found?

It occurs across most of Canada and the United States, from the Yukon to Ontario and from Massachusetts to California and Texas, but not in the southeast.

Source: Wikipedia

What do the larvae of Anastoechus barbatus eat?

The larvae prey on grasshopper eggs.

Source: Wikipedia

Same family (Bombyliidae)

Sources

  • Wikipedia: https://en.wikipedia.org/wiki/Anastoechus_barbatus

Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia

Text written 2026-10-27 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-27.

How this page works

This is one bug's fact sheet. The colored box at the top says whether it is dangerous. Sections below cover how to recognize it, whether it is a pest, and how to deal with it. The US map shows which states have records; tap a state to see other bugs there.

Every fact on Bug FAQ comes from a named source (university extension sites, government agencies, GBIF, iNaturalist, Wikipedia). The source is linked next to each section. If we have no source for something, we leave it out.