Sisyra fuscata

 Sisyra fuscata

Observation - Sisyra fuscata - UK and Ireland. Description: A Spongillafly. Their larvae parasitise freshwater sponges (e.g. of the genus Spongilla, hence the name spongillaflies).

A Spongillafly.
Their larvae parasitise freshwater sponges (e.g. of the genus Spongilla, hence the name "spongillaflies").