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(c) weekend, some rights reserved (CC BY-NC)
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(c) Paul Cook, some rights reserved (CC BY)
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(c) Alexis Tinker-Tsavalas, some rights reserved (CC BY)

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Alder erineum mite

Acalitus brevitarsus

Worldwide: 2,675 observations
Group: Arachnids

About

Acalitus brevitarsus is an eriophyid mite which induces domed, blister like swellings, known as galls. on some species of alder (Alnus species).

Summary from Wikipedia, CC BY-SA 4.0.

Recent sightings near Vancouver

Research-grade observations within 25 km, newest first.

Aug 12, 2026Deer Lake Park, Burnaby, BC, CAObserver: Senna Bryce RobesonView observation from Aug 12, 2026 on iNaturalist
Jul 26, 2024West Vancouver, BC, CanadaObserver: Radu ScurtescuView observation from Jul 26, 2024 on iNaturalist