Noctuidae : Acronictinae
  Prev | Next  
Photo © Allan Drewitt

View all 30 photos >

Immature stages

Similar Norfolk Species
Poplar Grey
Subacronicta megacephala
Coronet
Craniophora ligustri
Upload a Photo
 
Knot Grass
Acronicta rumicis

(Linnaeus, 1758) 2289 / 73.045

Norfolk status
Widespread and common.
Various open habitats including grassland, heathland, fens, scrub, gardens and open woodland.

Variable species, some examples of which can resemble other Acronicta species. The small curved white mark on the rear edge of each forewing. (resembling two small central white teeth when viewed at rest from above) are characteristic.

Recorded in 66 (89%) of 74 10k Squares.
First Recorded in 0022.
Last Recorded in 2025.
Additional Stats

< Light Knot Grass | Poplar Grey >

Determination
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10kGeneral Area
17/05/2025127TG20Norwich (Thorpe St Andrew)
14/05/2025127TG32Neatishead / Barton Broad
13/05/2025128TF63Snettisham
13/05/2025127TM18Dickleburgh
11/05/2025127TG10Wymondham
Show Details | 1990 to 2024 | 2000 to 2024 | Graph Key
Express Record Knot Grass
We need your records!
Do you have records of Knot Grass?
Put your own dot on the map!

Copyright © Lepidoptera UK 2025
   
Click Map for Details

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Forewing: 16-20mm.
Flight: Two generations May-June. Aug-Sept.
Foodplant:   Herbaceous and woody plants
Red List: Least Concern (LC)
GB Status: Common
Verification Grade:  Adult: 1
 Immature Adult   [Show Flight Times]

Data Policy | Cookies Policy
  
Underlying maps using Digital Map Data © NOLA™ 2025. © Lepidoptera UK - Jim Wheeler - Norfolk Moths 2007 - 2025. Data © NOLA™ 2025
This site requires necessary cookies to function correctly. We'd also like to set Google analytics cookies that help us make improvements by measuring how you use the site. These will be set only if you accept all cookies. Necessary cookies enable core functionality such as security, network management, and accessibility. You may disable these by changing your browser settings, but this will affect how the website functions. Cookies Policy