Jonathan's picture

Eristalis tenax?

Observed: 30th August 2012 By: Jonathan
iSpot team
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Eristalis tenax?
Drone fly? 30 Aug 2012 12-053
Description:
Identifications
Species interactions

No interactions present.

Comments

Wildlife Ranger's picture

Hovers

Looks like arbustorum or horticola , i think you might need the face to discount one or other - nice crisp images - cant see no tenax

WLR

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ophrys's picture

Eristalis

The individual fly in the second picture is not tenax, as the base of the hind tibia is pale. A few of those on the umbellifer are arbustorum, with pale face, orange sides to tergites 2 and 3 and dark on mid tibia.

pertinax and arbustorum are the common ones where I am, at the moment. tenax tends to peak a bit later in the autumn.

Ian
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Jonathan's picture

Thanks, everyone. This is

Thanks, everyone. This is more complicated than I had realized. Can you suggest a good website and or book for hover flies?

Jonathan
University of Edinburgh and Biodiversity Observatory (OU)

ophrys's picture

Hovers

The best website for reliably identified hoverflies is this...

http://www.flickr.com/photos/63075200@N07/collections/72157629600153789/

The best book is British Hoverflies by Stubbs and Falk. Out of print, but you might get it second hand and it must be due for a new edition before too long.

There is a Wildguide to Hoverflies coming out soon, covering many, but not all species. It should be well worth getting!

http://www.nhbs.com/britains_hoverflies_tefno_185594.html

Ian
_________________

My Flickr photos...

http://www.flickr.com/photos/52163027@N02/

Jonathan's picture

Great. Thanks. I'll look out

Great. Thanks. I'll look out for the Wildguide.

Jonathan
University of Edinburgh and Biodiversity Observatory (OU)