https://www.animaldiversity.org/accounts/Melitaea_pyronia/classification/
Melitaea pyronia | CLASSIFICATION | Animal Diversity Web
melitaeapyroniaclassificationanimaldiversity
https://www.semanticscholar.org/topic/Pyronia-cecilia/9057266
Pyronia cecilia | Semantic Scholar
pyronia ceciliasemanticscholar
https://www.woodlandtrust.org.uk/trees-woods-and-wildlife/animals/butterflies/gatekeeper/
Gatekeeper (Pyronia tithonus) - Butterflies - Woodland Trust
Find out all about the gatekeeper butterfly, from where it lives to how it breeds.
pyronia tithonusgatekeeperbutterflieswoodlandtrust