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Notes:
Nationally scarce (Nb) in scrubby heathland, mostly in south-eastern England, with scattered colonies from Sussex to Yorkshire and Lancashire. In Hampshire and on the Isle of Wight scarce in the New Forest, north-east Hampshire and in the west and south-east of the Isle of Wight, with scattered records from elsewhere; some of these may have been unwarrantedly rejected, but there is no doubt other species are sometimes mistaken for it. Wingspan 20-23 mm. Apart from the very local Silky Wave I. dilutaria, which may also have small terminal dots on both wings, the main confusion species is Satin Wave I. subsericeata, which usually lacks terminal dots; Dwarf Cream Wave I. fuscovenosa has terminal dashes instead of dots. Larva feeds on Wild Thyme, Dyer's Greenweed and Petty Whin.
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