Thread subject: Diptera.info :: Eristalinus aeneus/sepulchralis

Posted by Tony Irwin on 19-06-2013 20:29
#2

The fact is they're not always easy - it looks like both sites have included at least one misidentified picture. [Never trust any picture captions except Diptera.info!|t] In aeneus, the eyes of the male meet on the frons, in sepulchralis they are separate. In females, the eyes of aeneus are bare in the lower half, those of sepulchralis are entirely hairy. E.aeneus tends to be larger and less "wrinkly" than sepulchralis, and sepulchralis often has dull patches on the tergites, while aeneus is always shiny. In Britain, aeneus is a coastal species, while sepulchralis is associated with freshwater.

Edited by Tony Irwin on 19-06-2013 20:35