Trachypachus inermis

Trachypachus inermis · Order: Coleoptera · Family: Trachypachidae

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Trachypachus inermis
Photo: Trevor Van Loon, CC BY

Adults are often seen among dead leaves on open or lightly shaded ground with little vegetation. The species occurs across the United States and Canada, from lowlands up into mountainous areas.

Source: Wikipedia

Where it comes from

It is native to the United States and Canada, ranging from lowland regions to mountains.

Source: Wikipedia

Where it is found in the US

Recorded in 12 of 51 states and DC. Most records: Alaska, New Mexico, Wyoming, California, Nevada, Colorado, Oregon, Washington.

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

Source: GBIF

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

Months it is reported in the US

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Source: GBIF

More photos

Trachypachus inermis photo 2
Photo: Matt Muir, CC BY

Sources

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

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

Text written 2026-10-26 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-26.

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.