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The predator, I know, is an Asilidae.
And the prey, that is very commum here, I believe is an Ornidia obesa.
But someone can tell me which the genus of Asilidae?

Photo #1


Coordinates of the place where I took this photo:
Latitude: -22.538482357026, Longitude: -43.228272199631

Date and time:
January 31, 2011 at 10.23am GMT+3


Photo #2


Coordinates of the place where I took this photo:
Latitude: -22.538482357026, Longitude: -43.228272199631

Date and time:
January 31, 2011 at 10.25am GMT+3

Thanks for help!
AC

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A female Promachus sp. (with a big meal!).

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Thanks again, Eric!

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You're welcome Antonio. Except, I must admit, that the claws of this fly are now looking somewhat 'blunt' at the tips -- which means that it is in the closely related genus Amblyonychus instead (which may actually be just a subgenus of Promachus).

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Thanks, Eric!