Water Ermine Spilosoma urticae
Water Ermine Spilosoma urticae
Adult • © Reg Fry

72.021 BF2062
Water Ermine Spilosoma urticae

(Esper, 1789)

Wingspan 38-46 mm.

A scarce and local species, occurring mainly in the south-east of England and occupying damp fenland localities.

There are similar forms of the White Ermine which have very few black spots, but the present species never shows a black discal spot on the hindwing.

It flies in June and July and will visit the light-trap.

The larvae feed on a number of marshland plants such as water dock (Rumex hydrolapathum) and water mint (Mentha aquatica).

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