Geometridae : Larentiinae
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Photo © Adrian Matthews,  03/06/2021 - Assington Mill Farm

Immature stages

Similar Suffolk Species
Lesser Treble-bar
Aplocera efformata
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Treble-bar
Aplocera plagiata

(Linnaeus, 1758) 1867 / 70.192

Morley's Final Catalogue: May be noticed in autumn scattered everywhere from Ipswich to Gorleston.

Recent Suffolk Status: Common.

Life history: Double-brooded. Larvae of this species (or Lesser Treble-bar) have been found in Suffolk in the autumn/winter on various St John's Wort seedheads.

Identification: The best way to distinguish this species from Lesser Treble-bar is to look at the claspers at the end of the abdomen on males. In Treble-bar these are long and quite pointed whilst on Lesser Treble-bar these are shorter and blunter. The angle of the inner bar is quite variable and open to interpretation on both species so isn't a reliable feature to use.

Habitat: Grasslands, woodland rides, gardens, hedgerows, scrub areas.

Recorded in 46 (79%) of 58 10k Squares.
First Recorded in 1940.
Last Recorded in 2023.
Additional Stats

< Grey Pug  |  Lesser Treble-bar >

Determination
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
30/09/2023+25TM23 - Felixstowe/Landguard Point
22/09/2023125TM13 - Brantham/Holbrook
19/09/2023+26TM05 - Stowmarket/Needham Market
16/09/2023125TM13 - Brantham/Holbrook
15/09/2023125TM24 - Woodbridge/Martlesham
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
Express Record Treble-bar
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Copyright © Jim Wheeler 2024
   

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Forewing: 19-22mm.
Flight: Two generations May-June. Aug-Sept.
Foodplant:   St John's-worts
Red List: Least Concern (LC)
GB Status: Common
Verification Grade:  Adult: 2
 Immature Adult
     
Underlying maps using Digital Map Data © Norfolk Online Lepidoptera Archive - NOLA™ - Suffolk 2024. © James Wheeler - Norfolk Moths 2007 - 2024. Data © NOLA™ - Suffolk 2024
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