- click for Adult Macro Verification Guidelines
- Rare / Uncommon / Scarce
- care required in the identification process, as confusion with similar species is likely - quality photographs required. Confusion Species: Grey Dagger
ID pointers: A grey to pale-grey moth, with long branched black basal streaks and black dagger like marks near trailing corner. Forewing can sometimes be tinged brownish or pink. See Grey Dagger
Distribution: (Last record: 01/09/2024 at Belper ) - Resident and widely distributed at a low density in lowland areas of Derbyshire. This species and Acronicta psi (Grey Dagger), are so similar that field ID cannot reliably be used. The only sure way is by appearance of the caterpillars. Dark Dagger caterpillar has a red dorsal stripe, whilst Grey Dagger caterpillar has a yellow dorsal stripe. If cannot perform a Gen. Det, then record as Grey/Dark Dagger agg.
*** Last updated on 6 May 2025 by RP ***
Forewing: 17-20mm
Last Recorded Date: 01/09/2024
Last Recorded Year: 2024
Last Recorded By - Dave Evans
Last Recorded General Area - Belper
IMAGES BELOW: Melbourne – Tony Davison © – Dark/Grey Dagger agg
no images were found
Distribution Map for Acronicta tridens
derbyshiremoths.org © makes no guarantee of accuracy of data used in these maps and charts – they are presented to you with best endeavours and the data behind them updated periodically as time permits. Historic records are being discovered all the time. These will be assessed, so once they are all verified, they will be incorporated onto the map and charts.
Found 24 records
↳ 0 from After 2025
↳ 0 from 2020 - 2024
↳ 24 from Before 2020
↳ 0 from After 2025
↳ 0 from 2020 - 2024
↳ 24 from Before 2020
If the Map Layers function fails, just refresh the page and it should be OK after. Use the +- zoom on the top left, or on a tablet, use two fingers to zoom.
Bedrock Geology ** indirectly affects moth distribution by influencing the type of habitat and food plants available in an area. In turn, this may affect the types of moths that can thrive, or where they can most likely be found.
Monthly Records By Year: Acronicta tridens
Monthly Counts By Year: Acronicta tridens
Records Behind the Map and Charts - Acronicta tridens – 24 records available
Listed by Year - descending
| Taxon | Site Name | Tetrad | Year | Date | Count |
|---|---|---|---|---|---|
| Acronicta tridens | Willington, Derby (site not precise) | SK22Z | 2018 | 27/05/2018 | 1 |
| Acronicta tridens | Main Street, Kings Newton | SK32Y | 2015 | 15/10/2015 | 1 |
| Acronicta tridens | Brushfield Spar Quarry, Monsal Dale, Little Longstone | SK17Q | 2014 | 17/05/2014 | 1 |
| Acronicta tridens | Oaks Barn Cottage, Monyash Rd, Over Haddon, Bakewell | SK26D | 2011 | 23/04/2011 | 1 |
| Acronicta tridens | Oaks Barn Cottage, Monyash Rd, Over Haddon, Bakewell | SK26D | 2011 | 04/07/2011 | 1 |
| Acronicta tridens | Blacka Moor, Totley, Sheffield | SK28V | 2009 | 05/09/2009 | 1 |
| Acronicta tridens | Repton (site not precise) | SK32B | 2008 | 12/06/2008 | 1 |
| Acronicta tridens | Stanton Gate, Ilkeston (site not precise) | SK43Z | 1989 | 17/07/1989 | 1 |
| Acronicta tridens | Wilmot St, Sawley, Long Eaton | SK43R | 1989 | 01/08/1989 | 1 |
| Acronicta tridens | Sawley Marina, Long Eaton (site not precise) | SK43Q | 1988 | 11/09/1988 | 3 |
| Acronicta tridens | Sawley Marina, Long Eaton (site not precise) | SK43Q | 1988 | 15/09/1988 | 2 |
| Acronicta tridens | Lings Close,Ilkeston | SK44S | 1982 | 27/08/1982 | 1 |
| Acronicta tridens | Repton (site not precise) | SK32B | 1932 | 07/07/1932 | 1 |
| Acronicta tridens | Repton (site not precise) | SK32B | 1932 | 07/07/1932 | 1 |
| Acronicta tridens | Willington, Derby (site not precise) | SK22Z | 1918 | 27/05/1918 | 1 |
| Acronicta tridens | Repton (site not precise) | SK32B | 1908 | 12/06/1908 | 1 |
| Acronicta tridens | Barrow on Trent, Derby (site not precise) | SK32P | 1885 | 01/01/1885 - 31/12/1885 | 1 |
| Acronicta tridens | Barrow on Trent, Derby (site not precise) | SK32P | 1885 | 01/01/1885 - 31/12/1885 | 1 |
| Acronicta tridens | Calke Park,Ticknall (site not precise) | SK32R | 1883 | 01/01/1883 - 31/12/1883 | 1 |
| Acronicta tridens | Breadsall Moor, Derby (site not precise) | SK33U | 1883 | 01/01/1883 - 31/12/1883 | 1 |
| Acronicta tridens | Repton (site not precise) | SK32B | 1878 | 01/01/1878 - 31/12/1878 | 1 |
| Acronicta tridens | Repton (site not precise) | SK32B | 1800 | 01/01/1800 - 31/12/1878 | 1 |
| Acronicta tridens | Breadsall Moor, Derby (site not precise) | SK33U | 1800 | 01/01/1800 - 31/12/1883 | 1 |
| Acronicta tridens | Calke Park,Ticknall (site not precise) | SK32R | 1800 | 01/01/1800 - 31/12/1883 | 1 |