Thread subject: Diptera.info :: Fanniidae spec. ?
Posted by Robert Heemskerk on 05-01-2008 16:06
#1
Hi Larvaeforum,
From my collection larvae.
This could be a Fanniidae spec.?
size 4.5-5mm
under wet leaf
place: Amsterdam forest, swampy reetland
date: 26-12-2007
Posted by Robert Heemskerk on 05-01-2008 16:08
#2
pic 2
Edited by Robert Heemskerk on 05-01-2008 16:09
Posted by Robert Heemskerk on 05-01-2008 22:52
#3
dorsal view
Edited by Robert Heemskerk on 05-01-2008 22:53
Posted by jorgemotalmeida on 05-01-2008 23:29
#4
Fanniidae - Fannia cf. scalaris
Do you agree, Tony?
Posted by Stephane Lebrun on 05-01-2008 23:54
#5
The posterior spiracles are in positionned lateraly, which rule out
F. scalaris. It should be around
F. tuberculata/
armata...
Posted by jorgemotalmeida on 06-01-2008 00:20
#6
one image to show post spiracles
Posted by jorgemotalmeida on 06-01-2008 00:28
#7
Fannia tuberculata. in the second segment we can see no projections at the base of the process. In 3rd is visibel some projections.
Edited by jorgemotalmeida on 06-01-2008 00:46
Posted by Stephane Lebrun on 06-01-2008 00:46
#8
Your conclusion would be mine too Jorge. ;)
Posted by Robert Heemskerk on 06-01-2008 01:15
#9
Thank you Jorge and Stephane!
I was happy to find this was Fanniidae, but sp.-level is great!
I had to do some 'homework' to learn the details, but your explanation is nice!
Thankx again :p
Posted by jorgemotalmeida on 06-01-2008 01:22
#10
more one photo..
Posted by andrzej grzywacz on 12-01-2011 18:02
#11
Small correction to avoid wrong interpretation during identification of Fanniidae. Segment which Jorge has marked as a "1" is a second body segment but first thoracic. Larvae of Fanniidae have 12 segments (pseudocephalon + 3 thoracic + 7 abdominal + anal division-> last segment with posterior spiracles) not 11. Last one is always 12th, but on this photo we see only 11 because first segment (pseudocephalon) is retracted. Very often larvae, and always pupae of Fanniidae have first segment retracted into first thoracic segment. That can cause misinterpretation that they have only 11 segments. First segment is very good visible on the first photo of this post. However keys for the identification (Lyneborg, Rozkosny et al.) mark them from 1-11 (psedocephalon is omitted).
Projections on photo (top right corner) which I corrected as a "projections of dorsolateralas" should be "projections of laterodorsals".
Edited by andrzej grzywacz on 13-01-2011 14:42