Grey Scalloped Bar
Dyscia fagaria
Dyscia fagaria, the grey scalloped bar, is a moth of the family Geometridae. The species was first described by Carl Peter Thunberg in 1784 and it can be found in Europe.
20
Countries
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Dyscia_fagaria
Taxonomy & Classification
Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Lepidoptera
Family
Geometridae
Genus
Dyscia
Grey Scalloped Bar belongs to the family Geometridae, order Lepidoptera, within the Insecta class.
Species Profile
Dyscia fagaria, the grey scalloped bar, is a moth of the family Geometridae. The species was first described by Carl Peter Thunberg in 1784 and it can be found in Europe.
The Grey Scalloped Bar (Dyscia fagaria) is declining primarily due to habitat loss and degradation of its specialized woodland environments. Climate change and increased frequency of extreme weather events are also contributing to population declines by affecting the availability of its host plants and suitable breeding conditions.
Key Facts
Habitat & Distribution
Threats
IUCN Red List: Endangered
The Grey Scalloped Bar (Dyscia fagaria) is declining primarily due to habitat loss and degradation of its specialized woodland environments. Climate change and increased frequency of extreme weather events are also contributing to population declines by affecting the availability of its host plants and suitable breeding conditions.
Climate change affecting host plant phenology
Habitat loss and fragmentation of deciduous woodlands
Agricultural intensification and land use change
Increased frequency of extreme weather events
Pollution and pesticide use
Found in 20 Countries
Community Sightings
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Sources & Attribution
How to Cite
IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS
GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org
This page: SpeciesRadar (2025). Grey Scalloped Bar (Dyscia fagaria). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/grey-scalloped-bar