Dark Green Fritillary (Speyeria aglaja)
Key Details
| Taxonomic Groups: | Invertebrate > insect - butterfly > Butterfly |
| Red List Status: | Near Threatened (Not Relevant) [NT(nr)] |
| D5 Status: | Included in the baseline Red List Index for England (Wilkins, Wilson & Brown, 2022) |
| Section 41 Status: | (not listed) |
| Taxa Included Synonym: | (none) |
| UKSI Recommended Name: | Speyeria aglaja |
| UKSI Recommended Authority: | Linnaeus, 1758) |
| UKSI Recommended Qualifier: | (none specified) |
| Red List Citation: | Fox & Dennis, 2021 |
| Notes on taxonomy/listing: | (none) |
Criteria
| Question 1: | Does species need conservation or recovery in England? |
| Response: | Yes |
| Justification: | GB Red List (Fox et al. 2022): NT. 416% increase in abundance since 1976 and a 41% short-term (10 year 2010-2019) increase; 45% long-term decline in distribution since 1976 and a 12% short-term decline (Fox et al. 2023) |
| Question 2: | Does recovery/ conservation depend on species-specific actions? |
| Response: | No |
| Justification: | Some loss at sites in some regions which reflects the decrease in distribution. Uses a range of sites where violets occurs and can cope with increasing grass growth which is a threat to other fritillaries, is most widespread violet feeding fritillary. |
| Question 3: | At a landscape scale, would the species benefit from untargeted habitat management to increase habitat mosaics, structural diversity, or particular successional stages? |
| Response: | Yes |
| Justification: | Some loss at sites which reflects the decrease in distribution. Uses a range of sites where violets occurs and is most widespread violet feeding fritillary. |
Species Assessment
Not relevant as no Key Actions defined.
Key Actions
No Key Actions Defined
Acknowledgment:
Data used on this website are adapted from Threatened species recovery actions 2025 baseline (JP065): Technical report and spreadsheet user guide (Natural England, 2025). Available here.