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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » "Acalyptratae" » Tephritoidea » Fruit Flies (Tephritidae) » Tephritinae » Myopitini » Urophora » Canada Thistle Stem Gall Fly (Urophora cardui)
Photo#1160245
Three larvae - Urophora cardui
Copyright © 2015 Maria Fremlin

Three larvae - Urophora cardui
777 Lawrence Ave E, North York, Toronto, Ontario, Canada
September 22, 2015
Size: ~4 mm
Close-up of the larvae inside one of the galls. They are all feeding downwards, but before pupating will turn round in order for the adult to exit through the upper tissues. They will emerge next spring.

Images of this individual: tag all
Comparative goldenrod and Canada thistle spherical galls - Urophora cardui Three larvae - Urophora cardui
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Contributed by Maria Fremlin on 28 October, 2015 - 7:50pm

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