yorkie's picture

Unknown flies

Observed: 11th May 2010 By: yorkieyorkie’s reputation in Invertebratesyorkie’s reputation in Invertebratesyorkie’s reputation in Invertebratesyorkie’s reputation in Invertebrates
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Description:

I have very many small black flies in my garden today. Pics of 3 separate individuals attached. They were resting in very close proximity and I've assumed they are all the same species. I've seen many recent posts for St Mark's fly, but I can't see the diagnostic(? spine on the front tibia.

Identifications
Species interactions

No interactions present.

Comments

Syrphus's picture

I think these are Empididae,

I think these are Empididae, though the proboscis is not as long as in most species I see. You don't need to see spines on legs to know that this is not St Mark's Fly. That species is all intensely black (except the wings), hairy, with a large head and eyes in the male and a very small head in the female (they look like two separate species - rather odd when in cop.). There is a picture on the Species of the Month link on the HBRG website.

Murdo

TRY

recording wildlife with The Recorder's Year on www.hbrg.org.uk/TRY.html.