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This fly was observed in a very special habitat, on a karst area. Is this also Carcelia sp? Can this be id-ed to species?

Looks different than the species I usually find around my workplace.

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Another view.

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A third shot of the same individual.

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Eye's not hairy (and not big enough) so it isn't Carcelia I think. The petiole on vein-m might help Theo though :)

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Oh no, this is Gaedia !!

Look at the red abdominal tip and the bristlelike hairs on the Peleteria-spot .


Theo

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Ahh, yes - i missed those facial hair - very distinctive :) Another one I have never seen!! :(

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I try to sort out the species. There are only three species, one of which has never been recorded from Hungary (hispanica). The descriptions of the remaining two species connexa and distincta do not seem to fit, the specimen looks kind of intermediate betwen connexa and distincta.

It can not be connexa, because that species should have a partially orange abdomen, which is not seen in the photos (except the tip). Also the legs seem not to be partially yellow.

It should also not be distincta, because the abdomen again does not have sufficient amount of orange, the palpi seem to be darker (though this is difficult to judge from photos)

The images are more, but not entirely consistent with distincta, because the face seems to be 2x wide as the third segment of the antenna.

Both species were recorded only a few times from Hungary. Distincta is known from lime stone areas like Bukk, and Mecsek mountains, which would also favore disctincta.

This should be a female, am I right?

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IT's a female. The orange colouration mentioned by Mesnil refers to the male. Mesnil is often notoriously sloppy in describing females.
I wouldn't dare to come to a final conclusion, both are very similar. I agree that distincta fits best.

Theo