lynda07's picture


Observed: 12th May 2012 By: lynda07lynda07’s reputation in Invertebrateslynda07’s reputation in Invertebrates

I walked through a few swarms of these today - any idea what they are? I've been walking in the same area for years and don't ever recall seeing these. I think I've put in the right group (invertebrates)

Species interactions

No interactions present.

Species with which St Marks Fly (Bibio marci) interacts


jeremyr's picture

it's largish, all black,

it's largish, all black, hairy. I can't quite see if it has the cresting of a dilophus (fever fly), but someone who knows them well and/or can interpret wing venation may add more certainty

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