Insects and Spiders - native

Banded Alder Borer (Rosalia funebris) on Sep 9, 2026

Description of specimen

Submitter does not have a specimen

Black and white bug with antennas

Commentary

Avatar of commenter Thank you for your report! This beautiful beetle is the Banded alder borer. They are not pests. Their grubs live in dead branches of alder and other forest trees.

Tom Valente
Sept. 10, 2026, 8:46 a.m.

Resources

Information from Banded Alder Borer from Oregon State and iNaturalist.

Location

Back porch of apartment

Expert Reviewer

Avatar of Reviewer

Tom Valente
Oregon Department of Agriculture

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