Walnut Husk Maggot Fly

Rhagoletis suavis · Order: Diptera · Family: Tephritidae

Also called: Walnut Husk Maggot

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Walnut Husk Maggot Fly
Photo: Bill Keim, CC BY

The walnut husk maggot fly (Rhagoletis suavis) is a North American species. It is closely related to Rhagoletis juglandis, the walnut husk fly, but they are distinct species.

Source: Wikipedia

How to recognize it

It is closely related to Rhagoletis juglandis, the walnut husk fly, and should not be confused with it.

Source: Wikipedia

Where it lives

This fly occurs in North America.

Source: Wikipedia

Where it comes from

Its native range is North America.

Source: Wikipedia

Where it is found in the US

Recorded in 32 of 51 states and DC. Most records: Pennsylvania, New York, Iowa, Ohio, Michigan, Wisconsin, Virginia, Illinois.

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

Source: GBIF

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

Months it is reported in the US

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Source: GBIF

More photos

Walnut Husk Maggot Fly photo 2
Photo: Mark Apgar, CC BY
Walnut Husk Maggot Fly photo 3
Photo: Bill Keim, CC BY
Walnut Husk Maggot Fly photo 4
Photo: Bill Keim, CC BY
Walnut Husk Maggot Fly photo 5
Photo: Mark Apgar, CC BY

Same family (Tephritidae)

Goldenrod Gall FlyGoldenrod Gall FlyEurosta solidaginisThistle Stem Gall FlyThistle Stem Gall FlyUrophora carduiGoldenrod Brussels Sprout Gall FlyGoldenrod Brussels Sprout Gall FlyProcecidochares atraMediterranean Fruit FlyMediterranean Fruit FlyCeratitis capitataDamages trees, gardens or cropsCotton-gall TephritidCotton-gall TephritidAciurina bigeloviaeOriental Fruit FlyOriental Fruit FlyBactrocera dorsalisDamages trees, gardens or crops

Sources

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

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

Text written 2026-10-24 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-24.

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.