jeremyr's picture

Pale, dark & medium

Observed: 30th May 2012 By: jeremyrjeremyr’s reputation in Invertebratesjeremyr’s reputation in Invertebratesjeremyr’s reputation in Invertebratesjeremyr’s reputation in Invertebratesjeremyr’s reputation in Invertebrates
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Description:

all these three variations together on the same tree today

Identifications
Species interactions

No interactions present.

Comments

ophrys's picture

tenax

The second picture is tenax, and the third may be. tenax has the hind legs wholly dark and the hind tibiae are swollen and hairy-fringed. The first fly is not tenax, as the legs are too pale. I would submit that separately. The abdominal pattern looks as if it is Myathropa florea, but it is a difficult angle!

Ian
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jeremyr's picture

actually the third picture

actually the third picture was id-ed as tenax yesterday after I put it as e.eligans. I thought I'd add it to the pale and dark I got today, all three were there today but I ignored the medium one having already photoed it. The 'pale' one consistently looked like small m.florea but without the right markings whenever I peered closer, so I decided to get a picture on that basis, more active though, wouldn't settle like m.florea eventually does, and seeming significantly smaller
- I'll concentrate on that one as well tomorrow then

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jeremyr's picture

"M. florea is very variable

"M. florea is very variable in size and strength of markings, giving the deceptive appearance that several species may be involved." (Stubbs & Falk, 2002)

- in reference to the small specimen here, with vague markings, a colossal one from a day ago, and my confusion today over whether this was something new and to be photographed or not

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