Posted by GAREL Jean-Michel on 01-08-2025 11:29
#1
Hi,
this Ephydridae is of a small size: 1.5 mm . Moreover, Lemna are presents on our ponds. However, this Hydrellia was observed on Nymphaea . Is-it
Hydrellia albilabris ? All my thanks for you reply.

Jean-Michel GAREL : France : Brannay : 89150 : 31/07/2025
Altitude : NR - Taille : 1,5 mm
Réf. : 362598

Jean-Michel GAREL : France : Brannay : 89150 : 31/07/2025
Altitude : NR - Taille : 1,5 mm
Réf. : 362599

Jean-Michel GAREL : France : Brannay : 89150 : 31/07/2025
Altitude : NR - Taille : 1,5 mm
Réf. : 362600
Posted by Tony Irwin on 01-08-2025 15:26
#2
H. albilabris has a black, shining dorsum, with very little dusting. It also has a dense black frons, so I don't think this is
albiabris. The best way of identifying
Hydrellia is to dissect a male.
Posted by GAREL Jean-Michel on 02-08-2025 05:28
#3
All my thanks Tony.
Best regards, Jean-Michel Garel.