Imported Long-horned Weevil

Calomycterus setarius · Order: Coleoptera · Family: Curculionidae

Also called: Weevil

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Imported Long-horned Weevil
Photo: W Rao, CC BY

The imported long-horned weevil belongs to the broad-nosed weevil group in the beetle family Curculionidae. It originates from Japan.

Source: Wikipedia

Where it comes from

It is native to Japan.

Source: Wikipedia

Where it is found in the US

Recorded in 32 of 51 states and DC. Most records: Kansas, New York, Illinois, Nebraska, Minnesota, Wisconsin, Massachusetts, Pennsylvania.

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

Source: GBIF

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

Months it is reported in the US

JFMAMJJASOND

Source: GBIF

More photos

Imported Long-horned Weevil photo 3
Photo: Sinéad Tuttle-Lerner, CC BY
Imported Long-horned Weevil photo 4
Photo: iNaturalist user, CC0
Imported Long-horned Weevil photo 5
Photo: iNaturalist user, CC0
Imported Long-horned Weevil photo 6
Photo: iNaturalist user, CC0

Same family (Curculionidae)

Green Immigrant Leaf WeevilGreen Immigrant Leaf WeevilPolydrusus formosusDamages trees, gardens or cropsBlack Vine WeevilBlack Vine WeevilOtiorhynchus sulcatusDamages trees, gardens or cropsNettle weevilNettle weevilPhyllobius pomaceusDamages trees, gardens or cropsAsian Oak WeevilAsian Oak WeevilCyrtepistomus castaneusDamages trees, gardens or cropsStrawberry Root WeevilStrawberry Root WeevilOtiorhynchus ovatusDamages trees, gardens or cropsCommon Leaf WeevilCommon Leaf WeevilPhyllobius pyriDamages trees, gardens or crops

Sources

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

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.