Mottled Longhorned Beetle

Anthophylax attenuatus · Order: Coleoptera · Family: Cerambycidae

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Mottled Longhorned Beetle
Photo: iNaturalist user, CC0

The mottled longhorned beetle is found in Canada and the United States. Adults feed on the leaves of sugar maple, American beech, and hophornbeam trees.

Source: Wikipedia

Where it lives

It occurs in Canada and the United States.

Source: Wikipedia

What it eats

Adult beetles eat sugar maple, American beech, and hophornbeam.

Source: Wikipedia

Where it comes from

Its native range includes Canada and the United States.

Source: Wikipedia

Where it is found in the US

Recorded in 16 of 51 states and DC. Most records: Vermont, New York, New Hampshire, Massachusetts, Pennsylvania, Michigan, Wisconsin, Maine.

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

JFMAMJJASOND

Source: GBIF

More photos

Mottled Longhorned Beetle photo 2
Photo: naturalist charlie, CC BY
Mottled Longhorned Beetle photo 3
Photo: naturalist charlie, CC BY
Mottled Longhorned Beetle photo 4
Photo: River Ahlquist, CC BY
Mottled Longhorned Beetle photo 5
Photo: Teá Montagna, CC BY

Same family (Cerambycidae)

House LonghornHouse LonghornHylotrupes bajulusCan damage your homeAsian Longhorned BeetleAsian Longhorned BeetleAnoplophora glabripennisDamages trees, gardens or cropsRed Milkweed BeetleRed Milkweed BeetleTetraopes tetrophthalmusWhite-spotted SawyerWhite-spotted SawyerMonochamus scutellatusCan damage your homeRed Pine Longhorn BeetleRed Pine Longhorn BeetleStictoleptura rubraSpotted Longhorn BeetleSpotted Longhorn BeetleRutpela maculata

Sources

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

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.