Noctuidae : Xyleninae
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Dun-bar
Cosmia trapezina

(Linnaeus, 1758) 2318 / 73.216
Photo © Terry Box, 20 Aug 2020,  SE3967Langthorpe, VC65

Immature stages

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Similar Yorkshire Species: None
Express Record Dun-bar

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Yorkshire Status: Very common and widespread resident.

Unlike the rest of the genus, Dun-bar is a widespread and common moth across the county. Porritt described it as "abundant everywhere" in 1883 and not a lot has changed. The semi-carnivorous larvae feed on a wide variety of broad-leaved trees and shrubs, so this is predominantly a woodland moth, though it can be found in many habitats and is not uncommon in gardens. Numbers in the county are healthy, and in some years we receive over 1000 records. Catches can be large, the most being 103 at Elland on 31/7/2002.

Sutton & Beaumont, 1989: Widely recorded in all five vice-counties and often common but always most numerous in well wooded localities. There is some evidence of an increase in the numbers of this species over the last decade.

Recorded in 168 (84%) of 200 10k Squares.
First Recorded in 1846.
Last Recorded in 2023.
Additional Stats

< Lesser-spotted Pinion  |  Lunar-spotted Pinion >
Forewing: 13-16mm
Flight: July - September
Foodplant:   Broadleaved trees and shrubs
Red List Status: Least Concern (LC)
GB Status: Common
Verification Grade:  Adult: 1
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
09/09/2023163SE01 - Marsden
09/09/2023262SE99 - Harwood Dale
09/09/2023161TA26 - Flamborough Head (South)
06/09/2023161TA02 - Hessle
04/09/2023163SE13 - Bradford
  Immature   Adult   [Show Flight Weeks]
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
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