Thread subject: Diptera.info :: Fannia canicularis
Posted by Rui Andrade on 30-01-2008 13:13
#1
I photographed this fly in Oporto, Portugal. I think it resembles the fannid Fannia, am I right?
date: 2008/01/30
Edited by Rui Andrade on 30-01-2008 20:34
Posted by jorgemotalmeida on 30-01-2008 13:21
#2
F. cannicularis?...
Posted by Nikita Vikhrev on 30-01-2008 13:55
#3
Yes, Jorge, F. cannicularis ;)
Posted by Rui Andrade on 30-01-2008 20:29
#4
Thank you Jorge and Nikita:)
Posted by Rui Andrade on 31-01-2008 20:46
#5
Today, I photographed another Fannia. Is this individual also F. canicularis (it was a tad bigger, could it also be sexual dimorphism?) ? Could you explain me how to differentiate F. canicularis from other similar Fannia?
Posted by jorgemotalmeida on 31-01-2008 20:57
#6
scutum has a median brown longitudinal stripe.
It has TWO strong anterodorsal bristles in tibia 3.
usually the first two tergites have a strong orange colour.
in your first pciture you took today, it is very clear two posterodorsal and strong bristles on tibia 3, and the other 2 strong anterodorsal, not so clear.
Posted by Nikita Vikhrev on 31-01-2008 21:15
#7
Take it easy, Jorge ;)
scutum has a median brown longitudinal stripe
usually the first two tergites have a strong orange colour
It is OK.
As for t3 Fannia has 2 strong
dorsal at t3 (with few exclusions),
Fannia usualy has ad and av, but never pd.
F.canicularis has several week ad above strong ad.
Rui, there are several species of Fannia looking as your fly on photo. But F.canicularis is so cosmopolitan, widespread, common, that we can name you fly as F.canicularis with very small "?" or even without "?"
Nikita
Posted by jorgemotalmeida on 31-01-2008 21:32
#8
Fannia is so ephemeral... several "week". :P just kidding. :P
Posted by jorgemotalmeida on 31-01-2008 21:36
#9
Nikita Vikhrev wrote:
Take it easy, Jorge ;)
scutum has a median brown longitudinal stripe
usually the first two tergites have a strong orange colour
It is OK.
As for t3 Fannia has 2 strong
dorsal at t3 (with few exclusions),
Fannia usualy has ad and av, but never pd.
F.canicularis has several week ad above strong ad.
Rui, there are several species of Fannia looking as your fly on photo. But F.canicularis is so cosmopolitan, widespread, common, that we can name you fly as F.canicularis with very small "?" or even without "?"
Nikita
Nikita, it is very clear that the first photo - taken today - shows 2 strong POSTERODORSAL on hind tibia!
EDIT: Due the angle of the leg, the dorsal surface of hind tibia is away from the plane of the monitor, hence we see 2 strong and TRUE dorsal bristles. Not posterodorsal as I thought at the first.
Edited by jorgemotalmeida on 02-02-2008 15:56
Posted by Rui Andrade on 31-01-2008 22:17
#10
Thank you again Jorge and Nikita for the explanation:)
jorgemotalmeida wrote:
Nikita, it is very clear that the first photo - taken today - shows 2 strong POSTERODORSAL on hind tibia!
I think I'm also seeing this detail.
Posted by Nikita Vikhrev on 02-02-2008 14:57
#11
I'm sure , it is
true dorsal
Posted by jorgemotalmeida on 02-02-2008 15:51
#12
hmm... the angle of hind tibia can be tricky. the dorsal surface is away from the plane of monitor, so you have reason. :) the mid tibia shows us the dorsal surface of the leg.
Posted by Rui Andrade on 02-02-2008 16:29
#13
Well, it's really tricky:o
Thanks for clearing it up Nikita.