Thread subject: Diptera.info :: Lucilia to ID plz

Posted by Stephane Lebrun on 17-11-2008 22:47
#1
Le Havre, FRANCE
July 26, 2008
In a park.
Size : 11 mm.

Thanks in advance.

View #1 :

Posted by Stephane Lebrun on 17-11-2008 22:48
#2
View #2 :

Posted by Stephane Lebrun on 17-11-2008 22:49
#3
Last view :
Edited by Stephane Lebrun on 17-11-2008 22:52

Posted by Susan R Walter on 18-11-2008 13:50
#4
Are all hairs on the occiput black? Are there 2-5 setae on the central occipital area below the inner vertical setae? (see discussion in this post: http://www.diptera.info/forum/viewthread.php?forum_id=5&thread_id=12031).

Posted by Stephane Lebrun on 18-11-2008 18:52
#5
All hairs are black, but there is only one seta below each vti.
I have read the thread, if I understand well, you suspect it is L. sericata ?
The black basicosta and 2 post ac don't match, no ?
Edited by Stephane Lebrun on 18-11-2008 20:54

Posted by Susan R Walter on 18-11-2008 20:55
#6
Stéphane – you gave me the answers I was expecting. I didn't expect it to be sericata at all, but I looked at it in a hurry at lunchtime and my initial jizzy impression was richardsii, but the black basicosta didn't fit that either, so I asked about the hairs on the occiput to see if they were right. Then I rather over-egged it by asking about the setae on the occiput behind the occellular triangle, as sericata is the species you are usually wanting to eliminate if you think you have richardsii.

Anyway, having looked again, my initial impression was wrong, and it is either illustris or caesar. You will need to check T6 – a complete row of long marginal bristles means illustris, long marginals only on the 'corners' and midpoint for caesar. Illustris also has a slightly bigger distance between the eyes.

I'm inclined to suspect illustris from what I can see, but let us know what the T6 result is. Illustris is somewhat more synanthropic than caesar, which is much more a woodland species, but you could get either in a nice park with wooded areas.

Posted by Stephane Lebrun on 18-11-2008 21:44
#7
T6, so I have to soften my fly too, because it is retracted. :D
I will tell you tomorrow...

Posted by Nikita Vikhrev on 18-11-2008 22:12
#8
Stephane, you switch your attention to Calliphoridae? :|
Nikita

Posted by Stephane Lebrun on 18-11-2008 22:27
#9
Not especially, but this one had been captured, and it would be a pity that I put a label with "Lucilia sp." on it.
My favourites are still Muscidae. :)

Posted by Stephane Lebrun on 20-11-2008 19:15
#10
Susan said :
You will need to check T6 – a complete row of long marginal bristles means illustris, long marginals only on the 'corners' and midpoint for caesar.


I have just checked : complete row of marginal bristle son T6 !
So Lucilia illustris !

Many thanks Susan. :) :)

Posted by Susan R Walter on 20-11-2008 19:37
#11
Excellent. Since we have a confirmed illustris, can you submit the images to the gallery? All three, or at least 2&3. :) Thanks for taking the trouble with this fly.

Posted by Stephane Lebrun on 20-11-2008 21:12
#12
I will do it Susan, thanks again. :)