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Photo#64072
Orthogonis stygia - male

Orthogonis stygia - Male
Clay County, Arkansas, USA
July 14, 2006
Size: 25 mm
This species was named over 50 years ago on the basis of half a dozen females. Only one more female had been found since. However I have been finding males regularly in deep wooded canyons in the shady understory on well-rotted oak logs usually on a slope. The males are very possessive of their logs, even challenging humans who come too close, with wasp-like threat displays, and by following you around as long as you are present. I have found them in three east-Arkansas counties. If areas such as I have described are searched, it may turn out that this extremely rare robber fly is not so rare after all. Norman Lavers

Moved
Moved from Orthogonis.

Great!
Very interesting information and a new species for Bugguide,I would be happy to create a page for it and to include a link to the Orthogonis page, but I need to know what family it belongs to. Also, it would be nice if you tell us a little about yourself in your account page.

 
Orthogonis
This is in the Asilidae as Norm states it is a robber fly. Before he took shots of the male it was unknown to science. There are no other live shots of this animal. It is a strange robber related to several species which occur in Australia and Madagascar. It is placed in its own tribe by Fisher and is related to the Laphrinae. It has been found in isolated areas in TX, NC, AR, MS and FL.

 
Subfamily
Sorry, I meant to say: what subfamily of Asilidae and I still don't know this, I don't want to put the genus in the wrong place; is it a different subfamily that we don't have yet or is it Laphrinae? I would be happy to do it but then, you are also an editor so feel free to take over if you prefer.

 
Subfamily Laphriinae
That's the listing I see at, for instance, Animal Diversity Web, and Giff Beaton's Georgia checklist. Herschel has a page with earlier photos by Norm here.

This site gives a print reference, worth noting:
Taber, S.W. & Fleenor, S.B. (2003): Range extension, habitat, and review of the rare robber fly Orthogonis stygia (Bromley). - *Southwestern Entomologist 28(1): 85-87;

Occurrence in North Carolina is noted by Brimley (1), p. 338, (as Laphria stygia Bromely) from Stovall, Granville County, in June. Aha! Granville county is just up the road from me, I should be on the lookout. Looks like this thing is pretty widespread, perhaps just overlooked (?).

 
Laphriinae is a safe bet
A quick Google search shows a few taxonomically-credible sites that say Laphriinae, with none I could find that gave any other subfamily. It's easy enough to move pages, so I would think it would be better to create it first and make changes later (if necessary).

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