Aculus tetanothrix


Aculus tetanothrix is a mite that causes rounded, sometimes reddened galls to form on the leaves of willows, particularly White Willow. The galls are seen more often than their causer.

Identification difficulty

Adult Gall


Wherever White Willow is found.

When to see it

Summer and autumn.

UK Status

Thought to be widespread and fairly common where White Willow occurs.

VC55 Status

Status in Leicestershire and Rutland not known.

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map