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Portland Ribbon Wave
Idaea degeneraria (Hubner, 1799)
Geometridae: Sterrhinae
1714 / 70.017
Photo © Paul Black,  Hill Green, 22 August 2023

Similar Upper Thames Species
Riband Wave
Idaea aversata
Foodplant:   Open grassy places on limestone
Red List: Least Concern (LC)
GB Status: Nationally Rare
Former Status: Red Data Book
Verification Grade:  Adult: 3

Resident in Dorset and an immigrant elsewhere. Usually seen on the south coast, where it has become more frequent in recent years, but inland records remain very scarce. One was found in Berkshire in 2023 (not yet mapped).

Retained Specimen / Photograph will be Required.

Latest 5 Records (Data up to end 2022)
Date#VC10k Area
Further info: Idaea degeneraria
UK Moths
Mothdissection UK Upper Thames Moths (Full)
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