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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Flies (Diptera) » Acalyptratae » Tephritoidea » Fruit Flies (Tephritidae)
Photo#248732
Fruit Fly - Urophora quadrifasciata???
Copyright © 2008 Phil Huntley-Franck

Fruit Fly - Urophora quadrifasciata???
Elkton, Douglas County, Oregon, USA
July 15, 2008
Size: approx.1/8 inch
The last fruit fly in the list that popped up in the guide looked very much like this one. The fly was IDed as Fruit Fly - Urophora quadrifasciata. Did I get it right?

The flower bud is some sort of thistle, whose leaf spikes are totally unobtrusive.

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Fruit Fly - Urophora quadrifasciata??? Fruit Fly - Urophora quadrifasciata???
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Contributed by Phil Huntley-Franck on 11 January, 2009 - 10:58pm
Last updated 20 January, 2009 - 10:28pm

Did you know this is a spider mimic?
See remarks here: http://bugguide.net/node/view/7017#body
… Ron Hemberger, 12 January, 2009 - 12:29am login or register to post comments

 
Spider mimic, indeed -
didn't know that, but I did suspect it. The first time I saw one of these, it was facing away from me - thought it was an early instar of Phidippus clarus. I was about to pass it by when it "jumped" to a thistle bud about a foot away. I thought that ability odd, until the fly turned around, and I saw its gold/green eyes. I even labeled it accordingly in my image archive - "fruit fly - looks like early P clarus".

Thanks for the illumination.

May I assume I have the species ID correct?
… Phil Huntley-Franck, 12 January, 2009 - 1:09pm login or register to post comments

 
I don't know my way around these.
I think there are about three genera with wings similar to this, but am uncertain. (The most common starts with an "Rh...", but I can't find it readily.) Further, I think thorax and overall color are different, so if you've looked closely - as I'm sure you did - I'd guess you're on target. Hopefully, you'll get some expert commentary on this post.
… Ron Hemberger, 12 January, 2009 - 1:27pm login or register to post comments

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