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Am I correct that this is an Ephydrid? Can genus be told? Size is 2 mm. Collected at UV light, June 10 2011, Florida, USA.

Edit - I was wrong, it appears to be Chloropidae.

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Looks more like Chloropidae to me!

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Thanks Jan!

I ran it thru a Nearctic key and it seems to be either Hippelates sp. or, perhaps, Apallates sp. I think the face is jutting forward as in Hippelates, but I have nothing to compare against.

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Tricimba sp. I think, dear friend! :)

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!!!, many thanks

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Seems you are still doubtful. Ok, for sure I'll ask to an expert, if I be wrong, will say you!! :):)

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No, not doubtful, but excited that you gave me the correct ID! :D

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Question concerning this genus: are strong tibial spurs present on the hind tibia?

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No, they don't have, did you find any strong spur on???

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Yes, this has a strong spur on the hind tibiae.

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Do you have more photos of that?

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Yes, I took some more photos of hind leg, head, and thorax.

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head

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Thorax, dorsal view

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Thank you very much for your notification, because your first pics didn't show this character anymore;
According these new pics and the key, I think this is Arcuator genus. I don't have this species in my collection, and this is first time which I see that. :D :D
Would you please tell me some information about area that you found it? :)

Edit: I don't know about fauna of USA, It's better you check name of this genus in that list, and please tell me about result. thank you in advance. :)

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A species of the Apallates dissidens group (according to the Manual of Nearctic Diptera).

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Thank you so much Paul! Anyway is new one for me, I am wait for other information about this species! :D :D

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Here is a link to Sabrosky's 1980 paper where he proposed the genus Apallates:

http://biostor.or...0a9675.pdf

Regarding collection info, these were found in southwest Florida in a residential area. There was a ditch nearby (probably always with water in it), with part of a golf-course behind that.
I have one specimen (this one) collected at UV light and four additional ones taken in a yellow pan trap.

I am not sure whether this is then Apallates or Hippelates.

Hippelates: "Facial carina well-developed but thin, separating distinct antennal grooves; lower marginal portion
of face warped forward, and vibrissal angle at least slightly forwardly produced anterior to eye; face concave in profile; ocellar bristles well-separated, erect and parallel or slightly convergent"

Apallates: "Facial carina at most weakly indicated on upper face, not distinctly separating antennal grooves; face not concave in profile; lower marginal portion of face not warped forward and vibrissal angle not produced anterior to eye; ocellar bristles relatively close together, erect and cruciate, at least at tips"


This fly has cruciate ocellar bristles (as in Apallates) but I would say the lower part of the face seems to be produced forward (as in Hippelates). In the paper linked to above, it is said that in Apallates the hind tibial spur is small where in this specimen it seems quite large.

I think if I had a copy of this paper (http://pubs.esc-s...alCode=ent I could find out the answer. :)

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Thank you very much for your information, which was very complete and useful;
Well, for sure it's better that you show your sample directly to a specialist, who can answer you perfectly.
Terry Wheeler is one of specialist in Canada and he knows fauna of USA as well, it's his email address:
terry.wheeler@mcgill.ca
Hopefully he will help you.
Just I'll be grateful to you in advance, if you type the result later, here! :)
Good luck

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Finally obtained a copy of Sabrosky's 1941 paper.

This fly keys to Hippelates proboscideus Williston, 1896. Range is SE USA and Neotropical.

It is placed in the plebejus group by Sabrosky so I assume that would make this Hippelates rather than Apallates?

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I think the length of the spur also would indicate Hippelates. The description of Apallates mentions it being as long as the tibial diameter or shorter.

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Thanks Paul!