Posted by John Carr on 24-01-2016 14:26
#5
Norm Woodley said
Prosenoides flavipes, which I had considered then rejected because the proboscis curved the wrong way. Several photos posted to BugGuide look just like another
Prosenoides except for that detail. I now think that descriptions of proboscis shape are only valid for dried specimens, and live flies may bend differently.
Descriptions of long-beaked American
Clausicella note variation in curvature.