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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#237178
Urophora [Euribia] cardui - Thistle Stem Gall Fly - MALE - Urophora cardui - male
Copyright © 2008 Ed McAskill

Urophora [Euribia] cardui - Thistle Stem Gall Fly - MALE - Urophora cardui - Male
Toronto , Ontario, Canada
June 14, 2008
Size: maybe a quarter inch
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Contributed by Ed McAskill on 31 October, 2008 - 2:16am
Last updated 1 November, 2008 - 2:47pm

Urophora
Looks like U. cardui; note also that the fly is sitting on a thistle (host plant of U. cardui).
… Matthias Buck, 31 October, 2008 - 10:01am login or register to post comments

 
Urophora [Euribia] cardui
thanks matthias...went on a search thru the web and found a picture of the same fly...the one i found was labeled as a male with a spike and the end of its body...is it possible this would be a female
… Ed McAskill, 31 October, 2008 - 10:43am login or register to post comments

 
It is the other way around...
It is the other way around... Yours is a male, and the females have an ovipositor for laying eggs (that is the spike like structure)...
… Martin Hauser, 31 October, 2008 - 11:10am login or register to post comments

 
thanks for the quick reply
i have had this photo for a while and finally it has been identified...thanks for the info martin
… Ed McAskill, 31 October, 2008 - 11:17am login or register to post comments

It's late. I'm tired.
Search on spider mimic - no kidding - and I think you'll find this fly. (Markings on wings simulate a spider's front legs.)
… Ron Hemberger, 31 October, 2008 - 2:22am login or register to post comments

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