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waitingfortheweek: Interesting gall on a Canadian…

Friday, August 12th, 2016

Interesting gall on a Canadian thistle

This reminds me of the galls produced in Coyote Brush (Baccharis pilularis) by a small moth, Gnorimoschema baccharisella. Some googling suggests yours might actually be Urophora cardui, however, a type of gall-inducing fruit fly that has been imported from Europe in an effort to control the invasive thistle.

Thanks for sharing the image! The Tumblr gall fandom: small but doughty.

Reposted from http://ift.tt/2bnJOnq.

Tags: insects, galls, without any actually visible insects, so this is probably safe for Sally-viewing, Urophora cardui. Posted in Tumblr by jbc | Permalink | No Comments »

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