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Thick-headed fly - Zodion - female

Thick-headed fly - Zodion - Female
Baiting Hollow, Suffolk County, New York, USA
October 9, 2008
Size: small
Small red eyed fly.
This one is a total mystery to me, long fuzzy abdomen.

Found on Montauk Daisey. Surrounding area Oak, Beech, Cherry and sandy Long Island Sound cliff top.

Images of this individual: tag all
Thick-headed fly - Zodion - female Thick-headed fly - Zodion

Moved from Thecophora.

Zodion and Thecophora can be easy to confuse.

Zodion has a single bend near the base of the proboscis, as here...and typically has somewhat light colored stripes and/or patches on the dorsum of the thorax and elsewhere.

In contrast, Thecophora has a doubly bent proboscis, bent once near the base (though often hidden by the flap-like cheeks, so hard to see), and once near the middle (so distal portion of the proboscis points "backwards"...unlike here). Also Thecophora typically have thorax and abdomen more uniformly black.

Thick-headed fly.
Abdomen doesn't look that long and fuzzy to me....At any rate, this is a nice image of a thick-headed fly in the family Conopidae. Not many genera to choose from, so comparing to existing images in the guide should at least yield a genus ID.

Looks like Thecophora
There are a lot of very interesting flies in Conopidae. I especially liked the incredible wasp mimics.

This one looks to me to belong to Thecophora, although the genus has a lot of variation. Is there a reason why it has been sorted to species?

Thanks.. :•)

You're welcome:-)
You mean, why 'hasn't' it been sorted to species? Maybe because we have few fly experts who visit here regularly. Most of our specialists are fine academic scholars who have too much to do already! I think we're fortunate we've got most of the conopids to genus, actually. Bugguide is a work in progress, and progress is going to be slow.

species sorting
I sure didn't phrase my question as well as I could have, trying not to be too wordy.
I left out that I had searched around the web for pictures of USA Thecophora species that were not pictured on Bugguide and could not find any. In fact Bugguide has more information than any other site I visited and by far the best images.
So my question was really more global than just referring to Bugguide, but I didn't mention that, trying to not be too wordy.

Bugguide is an outstanding and wonderful resource BECAUSE of the many busy, dedicated specialists here that give so generously their time and knowledge.

I also like the opportunity to make a small contribution of a few images to the insect knowledge base that would not be possible without this special community of people.

Thank you Eric and all the others in the Bugguide community who make Bugguide possible. All of the bugs out there thank you too.

Thanks also for fixing up my spelling.

Lynn ;.))

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