Noctuidae : Acronictinae
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Light Knot Grass
Acronicta menyanthidis

(Esper, 1789) 2286 / 73.042
Photo © Damian Money,  Fen Bog, VC62

Immature stages

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Similar Yorkshire Species: None
Express Record Light Knot Grass

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Yorkshire Status: Local resident.

In Porritt's time this species was commoner and he described it as "generally common on heaths and moors" in 1883 and in 1907. It certainly seems to be a lot more local now but we still receive small numbers of records from many upland areas of the county. It also occurs on our lowland heaths, most records being from Strensall Common. There are few records from Skipwith but there has been less trapping there in recent years. There are also very few records from Thorne Moors. Most of our big counts in the last few years have come from Keighley Moor where the maximum number is 18 at actinic light on 9/5/2020. This just shows the importance of good quality moorland. Occasionally wandering specimens are recorded from lowland areas eg one at Spofforth on 5.6.2008 and two very odd (but confirmed) records from the east of VC61 in 2019. It is difficult to know how well it is doing in Yorkshire as the number of records is proportional to the numbers of enthusiasts who trap in the right areas.

Sutton & Beaumont, 1989: Apparently very local, mostly on high moors and less widely recorded than in previous years. Also recorded from sites just to the north of the County in Upper Teesdale (Dunn & Parrack, 1986).

Retained Specimen / Photograph will be Required.

Recorded in 59 (30%) of 200 10k Squares.
First Recorded in 1880.
Last Recorded in 2023.
Additional Stats

< Miller  |  Scarce Dagger >
Forewing: 16-20mm
Flight: May - July
Foodplant:   Bog-myrtle, Heather, Bilberry and other plants
Red List Status: Least Concern (LC)
GB Status: Common
Verification Grade:  Adult: 3
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
19/06/2023163SE01 - Marsden
19/06/2023263SD93 - Wycoller
17/06/2023362SE89 - Hole of Horcum
14/06/2023162SE66 - Strensall
12/06/2023465NZ01 - Barnard Castle
  Immature   Adult   [Show Flight Weeks]
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
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