Casbia melanops Rosenstock, 1885
(one synonym : Deilinia eccentritis Meyrick, 1892)
Pomaderris Moth
CABERINI,   ENNOMINAE,   GEOMETRIDAE,   GEOMETROIDEA
 
Don Herbison-Evans
(donherbisonevans@yahoo.com)
and
Mike & Pat Coupar
and
Cathy Byrne & Stella Crossley

Casbia melanops
early instar, magnified
(Photo: copyright Cathy Byrne)

The Caterpillars of this species are initially pale brown with black dots and a yellow head.

Casbia melanops
later instar
(Photo from: "Flying Colours", Coupar & Coupar, 1992)

Later, they become mottled with green and brown, with black dots. They feed on the foliage of :

  • Hazel Pomaderris ( Pomaderris aspera, RHAMNACEAE ).

    Casbia melanops
    final instar
    (Photo: copyright Cathy Byrne)

    They are loopers with only two pairs of prolegs. The Caterpillars grow to a length of about 2 cms.


    pupa
    (Photo: copyright Cathy Byrne)

    Pupation occurs in a loosely woven silk cocoon between leaves of the foodplant.

    Casbia melanops
    female
    (Photo: copyright Cathy Byrne)

    The adult moth varies from pale to rusty brown with blurred dark patches, and sometimes subterminal orange arcs or arcs of black dots. At rest the wings are held flat. The moths have a wingspan of about 3 cms. The males have well-developed feathered antennae. The females have thread-like antennae.

    Casbia melanops
    male
    (Photo: courtesy of Marilyn Hewish, Moths of Victoria: Part 7)

    The eggs are off-white and ellipsoidal. They are covered in fine ridges.

    Casbia melanops
    eggs, magnified
    (Photo: copyright Cathy Byrne)

    The species may be found in

  • Queensland,
  • New South Wales,
  • Australian Capital Territory,
  • Victoria,
  • , and
  • South Australia.


    Further reading :

    Pat and Mike Coupar,
    Flying Colours, New South Wales University Press, Sydney 1992.

    Marilyn Hewish,
    Moths of Victoria: Part 7,
    Bark Moths and Allies - GEOMETROIDEA (D)
    ,
    Entomological Society of Victoria, 2016, pp. 6-7, 12-13.

    Rudolph Rosenstock,
    Notes on Australian Lepidoptera, with descriptions of new species,
    Annals and Magazine of Natural History,
    Volume 5, Part 16 (1885), pp. 431-432, No. 617, and also Plate 11, fig. 10.


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    (updated 16 February 2010, 1 January 2017, 23 February 2020, 16 March 2021)