Silky Wave Idaea dilutaria
Silky Wave Idaea dilutaria
Adult • © David Painter

70.005 BF1704
Silky Wave Idaea dilutaria

(Hübner, [1799])

Wingspan 20-22 mm.

A very local species, occurring in only one or two places in Wales, and occasionally in England.

The adult is quite plain in appearance, but as the English name suggests, has a silky lustre to the wing surface.

It inhabits limestone cliffs and downs, where there are low bushes, and the larvae feed on common rock-rose (Helianthemum mummularium).

The moths fly from dusk into the night, during July.
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