Achaea janata

Castor semi-looper
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Superfamily: Noctuoidea
Family: Erebidae
Genus: Achaea
Species:
A. janata
Binomial name
Achaea janata
Synonyms
  • Geometra janata Linnaeus, 1758
  • Noctua melicerta Drury, 1770
  • Noctua tigrina Fabricius, 1781
  • Noctua cyathina Macleay, 1826
  • Catocala traversii Fereday, 1877
  • Ophiusa ekeikei Bethune-Baker, 1906
  • Achaea traversii (Fereday, 1877)
  • Achaea tigrina (Fabricius, 1775)
  • Achaea melicerta (Drury, 1773)
  • Acanthodelta janata Linnaeus, 1758
  • Achaea ekeikei Bethune-Baker, 1906
  • Ophiusa melicerte Drury

Achaea janata, the castor semi-looper or croton caterpillar, is an erebid moth, the caterpillars of which are termed 'semi-loopers' due to their mode of locomotion. It is found from the Indo-Australian tropics and subtropics, extending south to New Zealand and east through the Pacific archipelagoes to Easter Island. It is a major pest of castor throughout the world.