Thread subject: Diptera.info :: Female Syrphidae to identify...

Posted by pilonm on 18-08-2015 14:15
#1

Hello all,

Would it be possible to identify this female Syrphidae? (Genus, Species)?

Those pictures were taken in a marsh near home (Quebec, near Vermont).

parcours.pilonm.org/pictures/inconnu160.jpg


parcours.pilonm.org/pictures/inconnu161.jpg


Thanks alot :)


Michel (from Quebec, Canada; near Vermont)

Posted by Juergen Peters on 19-08-2015 00:15
#2

Hello,

here in Europe this would be an Eristalis tenax female. The species is distributed worldwide, but I don't know if there are additional similar species in North America.

Posted by John Carr on 19-08-2015 00:25
#3

Photos of all Eristalis known from Ontario are here: http://www.canaco...stalis.htm
The photos have diagnostic features pointed out.

Posted by Juergen Peters on 19-08-2015 00:42
#4

John Carr wrote:
Photos of all Eristalis known from Ontario are here: http://www.canaco...stalis.htm


Thanks! I think the hairy bands on the eyes are distinctive enough to say it's E. tenax.

Interesting, that E. interrupta is listed as 'uncommon' for Ontario. Here it is one of the most numerous Eristalis, more abundant than arbustorum, which listed as 'common and widespread' for Ontario. But both species are nearly ubiquitous here and live in the same habitats.

Posted by pilonm on 22-08-2015 17:09
#5

Thanks a lot John and Juergen for your so appreciated help.

Others (from others forums) pointed me toward E. tenax.

Cheers,

Michel