Spilosoma urticae, the water ermine, is a moth of the family Erebidae.

It is found in temperate belt of the Palearctic realm like similar Spilosoma lubricipedum, but prefers drier biotopes.

So, S. urticae is more abundant in steppes and it is the single Spilosoma species in Central Asia.

The moth flies April to October depending on the location.

The larvae feed on Rumex hydrolapathum, Mentha aquatica, Iris pseudacorus, Lysimachia vulgaris, Jacobaea vulgaris and Pedicularis sylvatica.