Thread subject: Diptera.info :: Syrphidae----> Episyrphus balteatus?

Posted by Tlerdahl on 23-09-2017 20:18
#1

Photographed in Bergen,Norway today.

Is it possible to get an ID on this hoverfly? The thorax looks similar to Episyrphus balteatus, but the rest of the fly don´t look like any of the E. balteatus I ever seen before....

Truls Lerdahl

Posted by Tlerdahl on 23-09-2017 20:18
#2

And here is the face....

Truls

Posted by Juergen Peters on 24-09-2017 03:51
#3

Hello,

surely Episyrphus balteatus. Such coloured individuals can appear when it is too cold during development.

Posted by Tlerdahl on 24-09-2017 16:26
#4

Thanks a lot for the answer, Jürgen. It has been colder here in Bergen than it has been for many, many years, so maby I find more of this dark E.balteatus.

Best regards
Truls

Posted by Paul Beuk on 26-09-2017 09:03
#5

It is a so-called intersex (frons width intermediate between male and female; no normally structured genitalia [eitehr male or female]), which usually are much darker than ordinary specimens.