Thread subject: Diptera.info :: Ephydridae (Hydrellia??) ID

Posted by flami on 17-10-2017 15:23
#1
Hi, is it possible to determine the specie of this larvae? I suppose they could be Hydrellia sp. I found them in a pond of Rome, Italy, feeding on Lemna minor. Pupation within the mine. The adults walk on the duckweed.
Edited by flami on 17-10-2017 15:29

Posted by flami on 17-10-2017 15:43
#2
Larva feeding on Lemna minor.

Posted by atylotus on 17-10-2017 15:46
#3
Hello Flami, welcome to the forum
looks like Hydrellia indeed, but ID to species level in most cases impossible. Perhaps Tony Irwin has a suggestion. He also did on my post/photo: https://diptera.i...to_id=5486

Posted by flami on 17-10-2017 16:02
#4
Hello atylotus, thank you for your answer! I have already read your post, and i found it very helpful. I suppose it could be a larva of Hydrellia albilabris or H. griseola, because of their distribution that includes Italy. I have other pictures of the puparium and the adult that could be helpful for the identification, but i have encountered some tecnical problems uploading them.

Posted by flami on 17-10-2017 16:45
#5
Anal segment

Posted by Tony Irwin on 17-10-2017 16:54
#6
This is very likely to be Hydrellia albilabris or griseola (the species most frequently associated with Lemna). They are easily distinguished as adults - see images in the gallery.
Edited by Tony Irwin on 17-10-2017 16:54

Posted by flami on 17-10-2017 19:56
#7
Thank you very much Tony for your suggestion! Here it is a picture of an adult. Maybe H. griseola?

https://imgur.com...
Edited by flami on 17-10-2017 19:59

Posted by Tony Irwin on 18-10-2017 11:19
#8
Difficult to say while it is wet. But it looks very black, so I suspect albilabris.