Helm's butterfly

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Helm's Butterfly
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Superfamily: Papilionoidea
Family: Nymphalidae
Subfamily: Satyrinae
Tribe: Satyrini
Subtribe: Hypocystina
Genus: Dodonidia
Butler, 1884
Species: D. helmsii
Binomial name
Dodonidia helmsii

Helm's butterfly or the forest ringlet butterfly, Dodonidia helmsii, is a rare butterfly of the family Nymphalidae, endemic to New Zealand. It is the only only species in the genus Dodonidia.

It feeds on Gahnia spp. and is found mainly in beech (Nothofagus spp.) forest. It has become more endangered due to the rarity of its food plant and the introduction of predatory wasps to New Zealand that prey on their larvae.