Imma acosma (Turner, 1900)
 (previously known as Pseudotortrix acosma)
IMMIDAE

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

Imma acosma
(Photo: courtesy of Graeme Cocks, Townsville)

The caterpillars of this species are green with dark markings. They feed openly by day on:

  • Tree Violet ( Hymenanthera dentata, VIOLACEAE ).

    Pupation occurs in a white silk cocoon, probably in the leaf litter.

    The adult moths have brown forewings each with dark marks near the middle. The forewings have a slight cusp along the costa. The hindwings are greyer, fading at the bases. The wingspan is about 1 cm.

    This species has been found in :

  • New South Wales, and
  • Queensland.

    Further reading :

    Ian F.B. Common,
    Moths of Australia, Melbourne University Press, 1990, figs. 29.13,53.1, p. 312.

    Ian F.B. Common,
    The Larvae and Pupae of Imma acosma (Turner) and I. vaticina Meyrick (LEPIDOPTERA: IMMIDAE), and the Taxonomic Relationships of the Family, Australian Journal of Entomology, Volume 18 Issue 1 (1979), pp. 33-38.

    Paul Zborowski and Ted Edwards,
    A Guide to Australian Moths, CSIRO Publishing, 2007, p. 117.

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    (updated 1 November 2010)