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View Thread :: Identification queries :: Diptera (adults)
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GAREL Jean-Michel
#1 Print Post
Posted on 16-02-2024 12:50

Posts: 223
Joined: 18.12.19

This Ephydridae of 2 mm was observed on february 2 in the north of Yonne department (Burgondy, France).
According to this post:, Limnellia quadrata should be possible. But, what are the criterions to distinguish between Limnellia quadrata and Ilythea spilota ? All my thanks for a reply.
Jean-Michel GAREL : France : Brannay : 89150 : 02/02/2024
Altitude : NR - Taille : 2 environ
Réf. : 336335
Jean-Michel GAREL : France : Brannay : 89150 : 02/02/2024
Altitude : NR - Taille : 2 environ
Réf. : 336336
Nikita Vikhrev
#2 Print Post
Posted on 16-02-2024 13:05
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Location: Moscow, Russia
Posts: 9220
Joined: 24.05.05

Nikita Vikhrev - Zool Museum of Moscow University
GAREL Jean-Michel
#3 Print Post
Posted on 16-02-2024 13:15

Posts: 223
Joined: 18.12.19

Thanks Nikita.
GAREL Jean-Michel
#4 Print Post
Posted on 16-02-2024 14:52

Posts: 223
Joined: 18.12.19

Dear Nikita.
According to this paper:, L. stenhammari is perhaps the best species.
Tony Irwin
#5 Print Post
Posted on 16-02-2024 15:42
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Location: Norwich, England
Posts: 7192
Joined: 19.11.04

This is Limnellia quadrata - note that it has just two dark spots hanging off vein R4&5. Separating Limnellia from Ilythea is straightforward. Limnellia has a moustache of bristles fringing the mouthedge, whereas Ilythea has a face that is bare centrally.
Tony Irwin
GAREL Jean-Michel
#6 Print Post
Posted on 16-02-2024 19:37

Posts: 223
Joined: 18.12.19

Thanks Tony for your response about Limnellia versus Ilythea.
Regards, Jean-Michel Garel.
#7 Print Post
Posted on 20-02-2024 10:46

Location: Shachovskaya
Posts: 646
Joined: 17.09.08

Some more comments about Limnellia.
The name of species depends on 2 or 3 spots on vein, which are pointed with lines on figures (Krivosheina, 2012).

On your photos I see 2 spots only, so it is to be quadrata. Tarsal segments of this species partly yellowish. Halters black.

But the wings are one above another.

The third spot may be possible under another angle of vision.

If you see 3 dark spots - the species may be stenhammari or fallax.

In this case you can check the coloration of halter

In Limnellia stenhammari halter is black and in L. fallax halter is yellow.

In Limnellia stenhammari legs completely black, including tarsi. In Limnellia fallax basal tarsomer yellow.
Edited by Cranefly on 20-02-2024 10:47
GAREL Jean-Michel
#8 Print Post
Posted on 21-02-2024 06:50

Posts: 223
Joined: 18.12.19

A lot of thanks Cranefly for your comments.
Best wishes.
Jean-Michel Garel.
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