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Lesser Common Rustic
Mesapamea didyma (Esper, 1788)
Noctuidae: Xyleninae
2343a / 73.170
Photo © Neil Sherman,  Male, gen.det. Purdis Farm, Ipswich. July 2016

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Similar Species
Common Rustic
Mesapamea secalis
Small Clouded Brindle
Apamea unanimis
Forewing: 11-16mm.
Flight: One generation July-Aug.
Foodplant:   Grasses.
Red List: Least Concern (LC)
GB Status: Common
Verification Grade:  Adult: 4
Status
Morley's Final Catalogue: Common rustic was just a single species in Morley's time.
A pest at light in July everywhere, especially noted at Ipswich, Needham, Monks Soham, Gorleston.

Recent Suffolk Status: There are very few confirmed Lesser common rustic records in the county and they are widely scattered.

Life history: Single-brooded.

Identification: This species and Common rustic can only be separated by dissection as they are both very similar and equally variable. Any undissected moths need to be recorded as aggregate.
Forms of Common rustic agg. that are very dark, almost blackish in colour with a clear white kidney mark quite often turn out to be Lesser common rustic on dissection and most of the confirmed Suffolk records are of this form.
Small clouded brindle flies earlier in the season so any moths still around when Common rustic agg. appears on the wing are usually very worn.

Habitat: A wide variety of grassy habitats including gardens.

Determination by Genitalia Examination Required

Recorded in 15 (26%) of 58 10k Squares.
First Recorded in 1994.
Last Recorded in 2021.

Latest 10 Records
Date#VC10kArea
24/07/2021126TL78Brandon/Lakenheath
16/07/2021126TL78Brandon/Lakenheath
06/08/2019125TM58Carlton Colville/Kessingland
01/08/2019125TM24Woodbridge/Martlesham
31/07/2019125TM24Woodbridge/Martlesham
26/07/2019125TM24Woodbridge/Martlesham
25/07/2019+25TM35Snape/Tunstall
25/07/2019126TL76Kentford/Dalham
22/07/2019125TM24Woodbridge/Martlesham
21/07/2019125TM24Woodbridge/Martlesham
Further info: Mesapamea didyma
 
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