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Lime Nail Galls

Eriophyes tiliae

Description:

These galls were formed by Eriophyes tiliae or lime nail gall. These chemically induced galls form an erect, oblique or curved distortion rising up from the upper surface of the leaves of the common lime tree Tilia x europaea. Mites move onto the foliage in the spring, having overwintered in the crevices of the bark and around the buds. The mites are less than 0.2 mm long. The chemicals released while sucking the sap from the lower leaf epidermis creates the colorful, hollow, finger-like extensions to form on the upper surface of the leaf. Before autumn, the mites, which have been actively feeding and growing inside the galls, depart from their little 'homes' and seek shelter elsewhere on the lime tree whereby the cycle begins anew.

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6 Comments

Seema
Seema 8 years ago

Interesting..

Eva Varga
Eva Varga 8 years ago

That's it, Dandoucette!! Thank you!

boater274
boater274 8 years ago

Looks like a gall caused by an insect depositing eggs within the leaf.

dandoucette
dandoucette 8 years ago

The leaf looks like a Linden - Tilia sp. Maybe Tilia x europaea or one of it's parents.
http://en.wikipedia.org/wiki/Tilia_×_eur...

Eva Varga
Eva Varga 8 years ago

I don't unfortunately. I'm from the U.S. and observed this while traveling in Norway.

MickGrant
MickGrant 8 years ago

Interesting, any idea what species of tree leaf it is?

Eva Varga
Spotted by
Eva Varga

Oslo, Oslo, Norway

Spotted on May 10, 2011
Submitted on Oct 4, 2011

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Reference