Noctuidae : Noctuinae
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Photo © Neil Sherman,  Purdis Farm, Ipswich. May 2018.

Similar Suffolk Species
Ingrailed Clay
Diarsia mendica
Fen Square-spot
Diarsia florida
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Small Square-spot
Diarsia rubi

(Vieweg, 1790) 2123 / 73.334

Morley's Final Catalogue: Levelly distributed everywhere, and quite common at both sugar and light, from Ipswich to Gorleston.

Recent Suffolk Status: Common.

Life history: Double-brooded. First brood moths are larger than the second brood and often darker in colour.

Identification: Ingrailed clay is normally paler in colour and are more patterned in light and dark shades. Fen square-spot, a rarely recorded species in the county, is larger and paler in colour and appears between the two broods of Small square-spot. The genitalia of Fen square-spot are identical to Small square-spot so future DNA studies may in fact reveal they are the same species.

Habitat: A wide variety of habitats including gardens.

Recorded in 53 (91%) of 58 10k Squares.
First Recorded in 1930.
Last Recorded in 2024.
Additional Stats

< Ingrailed Clay | Fen Square-spot >

Determination
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
29/09/2024125TM34 - Hollesley/Rendlesham Forest
24/09/2024125TM25 - Wickham Market/Otley
21/09/2024125TM24 - Woodbridge/Martlesham
18/09/2024125TM25 - Wickham Market/Otley
17/09/2024125TM25 - Wickham Market/Otley
Show Details | 1990 to 2024 | 2000 to 2024 | Graph Key
Express Record Small Square-spot
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Copyright © Lepidoptera UK 2025
   
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Forewing: 12-16mm.
Flight: Two generations May-June. Aug-Sept.
Foodplant:   Dandelion, Foxglove and docks
Red List: Least Concern (LC)
GB Status: Common
Verification Grade:  Adult: 2
 Immature Adult   [Show Flight Times]
     
Underlying maps using Digital Map Data © Norfolk Online Lepidoptera Archive - NOLA™ - Suffolk 2025. © James Wheeler - Norfolk Moths 2007 - 2025. Data © NOLA™ - Suffolk 2025
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