Photo © Mike Wall

Water Veneer

Acentria ephemerella

Checklist Number
63.115 [B&F: 1331]

Verification
Record will be accepted (subject to date and location checks)

Classification

Family:Crambidae
Subfamily:Acentropinae
Genus:Acentria
Species:ephemerella
Authority:([Denis & Schiffermüller], 1775)

Common in ponds, lakes and slow rivers throughout much of the British Isles. In Hampshire and, to a lesser extent, on the Isle of Wight, locally abundant in suitable habitat throughout. Wingspan male 13-17 mm, female wingless. Only the distinctive male is likely to be encountered and on certain nights it undergoes massive dispersal flights when it appears at light far from water and often in vast numbers (1000+ not unknown). Larva feeds on Canadian Waterweed and Pondweed, living entirely underwater.

The abundance in each month is indicated as follows:

No records
Very occasional
Irregular
Uncommon
Off-peak, but not unusual
Off-peak, but not unusual
Main flight time
J F M A M J J A S O N D
Adult
Larval

Records by week (adult)

Records by week (larval)