Azelina biplaga Walker, 1869
Acute Point Moth
(one synonym is Metrocampa glaucias Meyrick, 1892)
LITHININI,   ENNOMINAE,   GEOMETRIDAE,   GEOMETROIDEA
 
Don Herbison-Evans
(donherbisonevans@outlook.com)
and
Cathy Young & Stella Crossley


early instar
(Photo: copyright Cathy Young)

These Caterpillars when young are green with black dots, sparse hairs, and a yellow head. Later instars develop red coloration around the head and thorax.


late instar
(Photo: copyright Cathy Young)

The caterpillars feed on :

  • Bracken ( Pteridium esculentum ( POLYPODIOPHYTA ).


    caterpillar head, magnified
    (Photo: copyright Cathy Young)

    The adult moth is brown with a submarginal line or row of dark spots, and sometimes a dark spot or outlined circle near the centre of each forewing. The forewings have hooktips and a marginal cusp. The wingspan is about 4 cms.

    Metrocampa biplaga
    (Photo: copyright Cathy Young)

    The eggs are spherical and white, developing red markings as hatching approaches.


    eggs, magnified
    (Photo: copyright Cathy Young)

    The species is found in

  • New South Wales,
  • Victoria,
  • Tasmania, and
  • South Australia.


    underside
    (Photo: courtesy of Joan Fearn, Moruya, New South Wales)

    Both of the genera Azelina and Metrocampa are inappropriate for this species, but a suitable genus has yet to be found.


    Further reading :

    Ian F.B. Common,
    Moths of Australia, Melbourne University Press, 1990, p. 366.

    Marilyn Hewish,
    Moths of Victoria: Part 7,
    Bark Moths and Allies - GEOMETROIDEA (D)
    ,
    Entomological Society of Victoria, 2016, pp. 6-7, 10-11.

    Edward Meyrick,
    Revision of Australian Lepidoptera V,
    Proceedings of the Linnean Society of New South Wales,
    Series 2, Volume 6, Part 4 (1892), pp. 644-645, No. 72.

    Francis Walker,
    Characters of undescribed Lepidoptera Heterocera,
    E.W. Janson, London, 1869, p. 75, No. 26.


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    (updated 24 July 2013)