Clifden Nonpareil
Catocala fraxini
This record describes Catocala fraxini (species). Recorded family: Erebidae. Recorded order: Lepidoptera.
Identification and Appearance

Wingspan 75 to 95 mm. A very large species, superficially similar to some other Erebinae species, but the blue underwing colouration is unmistakable. Unless identified by a recognised expert, a photo is required. A former rare immigrant species, with periods as a scarce resident in the south and east. Now a recent colonist and resident over a much wider distribution. No additional images available for this species.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Lepidoptera
- Family
- Erebidae
- Genus
- Catocala
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Seasonal Activity
Late August and September.
Additional species information
Recorded status
A former rare immigrant species, with periods as a scarce resident in the south and east. Now a recent colonist and resident over a much wider distribution.
About Butterflies and Moths: the wider group
Order-level background for Lepidoptera, the group containing Catocala fraxini. Species-specific details appear above.
Group overview
Lepidoptera includes approximately 180,000 described species of butterflies and moths. Moths outnumber butterflies roughly 10:1. The monarch butterfly's eastern population has declined by more than 80% since the mid-1990s, and the western population by over 95% since the 1980s. The IUCN lists the migratory monarch as Vulnerable.
Ecological role of the group
Butterflies and moths are essential indicators of ecosystem health. As caterpillars, they are a primary food source for birds - a single nest of blue tit chicks requires ~10,000 caterpillars. Adult moths pollinate many night-blooming plants.
Economic and practical significance of the group
Lepidoptera are critical pollinators. In Europe, grassland butterfly species have declined by almost 50% since the early 1990s. In the UK, three-quarters of butterflies are in decline. In the U.S., five butterfly species have gone extinct since 1950, with 29 listed as endangered.
Recorded sources for this group: IUCN Red List, Xerces Society, USFWS, PNAS, WWF. Imported estimates may describe particular regions or reporting periods.
Photos of Clifden Nonpareil (6)
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