Thread subject: Diptera.info :: Thyridanthrax female (polyphemus? nebulosus?)

Posted by Pietro on 17-10-2018 19:27
#1
Italy Sardinia (Alghero) 16/06/2018

Posted by Pietro on 17-10-2018 19:28
#2
Photo 2

Posted by Pietro on 17-10-2018 19:28
#3
Photo 3

Posted by Piluca_Alvarez on 19-10-2018 06:34
#4
Hi, Pietro Smile

If those two species are the only possibilities of this group of species in Sicilia, it should be polyphemus then Smile

Best

Piluca

Posted by Pietro on 19-10-2018 16:30
#5
Ciao Piluca,
for the keys of Sanchez Terron and Roldan Bravo with "Occipucio amarillo": only polyphemus and nebulosus, wing design more compatible with polyphemus.
For Sardinia both not reported!
Your opinion ...
new report?

Posted by Piluca_Alvarez on 19-10-2018 17:12
#6
Well, if none of them has been reported in Sardinia, the situation is a lot trickier Wink

There are some European species that I have never seen or been able to study Sad Give me a couple of days to study the situation, please. One thing is certain: I have seen polyphemus in real life and this one fits rather nicely, although I cannot get a real idea of its size. T. polyphemus is usually a really bulky fly compared to common species as perspicillaris or elegans. But size variation is important in most Anthracinae Sad (at least here in Spain) and can be deceiving.

See a picture of T. polyphemus in Spain. On flowers of Eryngium campestre. That will give you an idea and a reference to compare Smile while you wait... Wink
Edited by Piluca_Alvarez on 19-10-2018 17:14

Posted by Pietro on 19-10-2018 17:41
#7
Thanks piluca
size about 14/15 mm.
For the Bombilids of Sardinia the checklist of Faunaitalia and Faunaeur are incomplete and not reliable.
Edited by Pietro on 19-10-2018 17:42