Arcte coerula (Guenée, 1852)
(erroneously known as : Cocytodes coerulea)
Ramie Moth
CATOCALINAE ,   NOCTUIDAE

Don Herbison-Evans ( donherbisonevans@yahoo.com )
&
Stella Crossley

(updated 18 July 2010)

Arcte coerula
(Photo: courtesy of Maaki Ikeda)

This spectacular Caterpillar is yellow with a black band along each side containing a row of red spots, and with narrow black lines across the back The head and legs are black. It has sparse stiff long white hairs.

It has been found feeding on :

  • China ramie ( Boehmeria nipononivea, URTICACEAE ), and
  • Nettle Tree ( Boehmeria australis, URTICACEAE ).

    When threatened, they are inclined to swing the front part of the body from side to side. The caterpillars darken with age, and grow to a length up to 10 cms.

    The adult moths have dark brown patterned forewings. The hindwings are dark blue with a black margin and a black submarginal band.

    The species is found across south-east Asia, including:

  • Fiji,
  • India,
  • Japan,
  • New Guinea, and
  • Taiwan,
    as well as
  • Norfolk Island.

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