Orange swift

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Orange swift
Triodia sylvina-Kärnten, Hohe Tauern, Obervellach, 1050 m-bE-HdN-481a.jpg
Triodia sylvina, male.jpg
Triodia sylvina, male
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Hepialidae
Genus: Triodia
Species: T. sylvina
Binomial name
Triodia sylvina
(Linnaeus, 1761)
  • Phalaena (Noctua) sylvina Linnaeus, 1761
  • Alphus sylvinus (Linnaeus, 1761)
  • Hepialus sylvina (Linnaeus, 1761)
  • Hepialus sylvinus (Linnaeus, 1761)
  • Bombyx hamma [Denis and Schiffermuller], 1775
  • Hepialus angulatus Fabricius, 1781
  • Phalaena multicolor Fourcroy, 1785
  • Hegialus crux Fabricius, 1787
  • Noctua angulum de Villers, 1789
  • Noctua c-album de Villers, 1789
  • Hepialus fauna Schrank, 1801
  • Hepialus cruxator Haworth, 1802
  • Hepialus angulator Haworth, 1802
  • Hepialus sylvinator Haworth, 1802
  • Hepialus pallidus Hormuzaki, 1894
  • Hepialus poecilus Hormuzaki, 1894
  • Hepialus kruegeri Turati, 1909
  • Hepialus victoriae Petkoff, 1914
  • Hepialus brunnescens Lempke, 1938
  • Hepialus pauper Lempke, 1938
  • Hepialus androgynus Agenjo, 1942
  • Hepialus pardoi Agenjo, 1942
  • Hepialus alfaroi Agenjo, 1942
  • Hepialus laincalvo Agenjo, 1942
  • Triodia nigrescens Lempke, 1961
  • Triodia obscura Lempke, 1961
  • Triodia pallida Lempke, 1961
  • Triodia reducta Lempke, 1961

The orange swift (Triodia sylvina), also known as "orange moth" (but see Angerona prunaria), is a species of moth belonging to the family Hepialidae. It was previously placed in the genus Hepialus. It is distributed throughout Europe.

Illustration from John Curtis's British Entomology Volume 5

This species has a wingspan of 32–48 mm. The male has rich orange forewings with two white bars forming a "v" shape. The hindwings are dark brown. The female is similar but generally larger and less brightly coloured. It flies at night from June to September [1] and is attracted to light.

The larva feeds on the roots of various plants including bracken, dandelion, dock, hop and viper's bugloss. This species overwinters twice as a larva.

  1. ^ The flight season refers to the British Isles. This may vary in other parts of the range.


  • Chinery, Michael, Collins Guide to the Insects of Britain and Western Europe 1986 (Reprinted 1991)
  • Skinner, Bernard, Colour Identification Guide to Moths of the British Isles 1984

External links[edit]