Alfoz's picture


Observed: 3rd August 2011 By: AlfozAlfoz’s reputation in Invertebrates

There were thousands of the black flies with the orange/red legs both flying and on these flowers. We saw several of the black bee-like insects always on flowers. I find them really interesting but know very little about them. Have some ID books but there are so many insects out there!

Species interactions

No interactions present.


keredtrams's picture

called noon day fly because

called noon day fly because it emerges only in sunny conditions.

Matt Smith's picture

Noon-day Fly

The name "Noon-day fly" refers to Mesembrina meridiana, not Tachina grossa. The overall appearance is similar, but Tachina has a yellow head and is much bigger than Mesembrina.

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Syrphus's picture

You have four species of fly

You have four species of fly here. The big one is Tachina grossa, a parasitoid fly that develops inside large caterpillars. The one with orange patches on the sides is an Eristalis hoverfly. The red-legged ones are Bibionids, perhaps B. pomonae, and there is an indeterminate fly at lower left. For good measure, you have what looks like the rear end of the soldier-beetle Rhagonycha fulva at middle left! No Noon-flies though.



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Alfoz's picture

Four species

Thanks very much for such a comprensive ID