| Family | Nymphalidae |
|---|---|
| Subfamily | Satyrinae |
| Genus | Hipparchia |
| Species | statilinus |
| Authority | (Hufnagel, 1766) |
| English Name | Tree Grayling |
| European Red List 2010 | Near Threatened (NT) |
|---|---|
| EU 27 Red List 2010 | Near Threatened (NT) |
| European Red List 2025 | Least Concern (LC) |
| EU 27 Red List 2025 | Least Concern (LC) |
| Habitats Directive | |
| Bern Convention | |
| CITES |
The Tree Grayling occurs in very warm, dry and nutrient-poor areas with much open ground and sparse vegetation. The size and markings of this butterfly are very variable. While remaining on the ground, the female deposits her eggs one by one on withered blades of grass. Grey Hair-grass (Corynephorus canescens), Sheep’s-fescue (Festuca ovina), Brown Bent-grass (Agrostis vinealis), bromes (Bromus spp.), Feather grass (Stipa pinnata), and other grasses are used as foodplants. The small caterpillar passes the winter in a grass tussock and, if it does not freeze, remains active during the winter. However, growth only begins after hibernation. As development is very slow, the caterpillar only pupates in the summer. The flight period of the Tree Grayling, that only has one brood a year, is therefore very late.
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