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Semioscopis steinkellneriana
Dawn Flat-body ([Denis & Schiffermüller], 1775)
Depressariidae: Depressariinae
667 / 32.002
Photo © Antony Wren,  Dunwich, Suffolk 26.4.19

Similar Suffolk Species
Early Flat-body
Semioscopis avellanella
Wingspan: 18-23mm
Flight: April - May
Foodplant:   Blackthorn, Hawthorn
Nat Status: Local
Verification Grade:  Adult: 2

Morley’s Final Catalogue: Not supposed to be rare on hawthorn and rowan. Taken at Bungay in 1903 by Mrs. Mann (Trans, i, 35), probably at light; and on 2 June 1935 in Fritton marshes (Mly).

Recent Status: Commoner than the related S. avellanella in Suffolk.

Life Style: A single brooded species flying from March to May and coming to light. The larvae feed on Prunus spinosa, Sorbus aucuparia and Crataegus. They pupate on the ground in a cocoon.

Identification: A strikingly marked species that differs from the similar S. avellanella by the dark streak starting away from the wing base. It is generally also wider and sometimes displays as an ‘S’ shape on the wing.
The larvae feed from a rolled leaf open at each end. More Info

Recorded in 21 (36%) of 58 10k Squares.
First Recorded in 1903.
Last Recorded in 2020.

Latest 5 Records
Date#VC10k Area
16/04/2020125TM25 - Wickham Market/Otley
11/04/2020125TM25 - Wickham Market/Otley
26/04/2019125TM47 - Blythburgh/Dunwich
17/04/2018125TG50 - Gorleston
20/04/2017225TM24 - Woodbridge/Martlesham
Further info: Semioscopis steinkellneriana
 
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