| Family | Nymphalidae |
|---|---|
| Subfamily | Satyrinae |
| Genus | Coenonympha |
| Species | tullia |
| Authority | (Müller, 1764) |
| English Name | Large Heath |
| European Red List 2010 | Vulnerable (VU) |
|---|---|
| EU 27 Red List 2010 | Near Threatened (NT) |
| European Red List 2025 | Endangered (EN) |
| EU 27 Red List 2025 | Vulnerable (VU) |
| Habitats Directive | |
| Bern Convention | |
| CITES |
The Large Heath inhabits raised bogs, wet heaths, swampy habitat and wet grasslands, often occurring on quite rough vegetation. As a consequence of land drainage remaining habitat patches are often small, and populations they contain very small indeed, making them difficult to detect. Main foodplants are Cotton-grass (Eriophorum vaginatum), as well as other Eriophorum species. The female deposits her eggs singly on, or in the neighbourhood of, the foodplant. The caterpillars hibernate in the third or fourth larval instar, hidden in tussocks of grass. They also pupate in the tussocks of the foodplant. The Large Heath has one generation a year. The species already seems to have been affected by climate change and has declined severely at the southern edge of its range.
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