Thread subject: Diptera.info :: Fanniidae spec. ?
#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
#4
Fanniidae - Fannia cf. scalaris
Do you agree, Tony?
#5
The posterior spiracles are in positionned lateraly, which rule out
F. scalaris. It should be around
F. tuberculata/
armata...
#6
one image to show post spiracles
#7
Fannia tuberculata. in the second segment we can see no projections at the base of the process. In 3rd is visibel some projections.
#8
Your conclusion would be mine too Jorge.
#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
#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".