Ectropis fractaria (Guenée, 1857)
(formerly known as Tephrosia fractaria)
Ringed Bark Moth
BOARMIINI,   ENNOMINAE,   GEOMETRIDAE,   GEOMETROIDEA
 
Don Herbison-Evans
(donherbisonevans@yahoo.com)
and
Stella Crossley

Ectropis fractaria
(Photo: courtesy of David Akers, Won Wron, Victoria)

The young caterpillar of this species is a green looper, with brown markings. Older instars become covered in wiggly brown lines.

Ectropis fractaria
(Photo: courtesy of David Akers, Won Wron, Victoria)

It has been found feeding on

  • Black Wattle (Acacia mearnsii, MIMOSACEAE)

    Ectropis fractaria
    close-up of head
    (Photo: courtesy of David Akers, Won Wron, Victoria)

    The caterpillar pupates in a flimsy cocoon in a dried leaf. The pupa is dark green with a brown abdomen, and has a length of about 1.2 cms.

    Ectropis fractaria
    (Photo: courtesy of David Akers, Won Wron, Victoria)

    The adult moth of this species is pale brown, with broken zigzag dark brown lines across the wings. The abdomen has a pair of dark dots one the back of most segments.

    Ectropis fractaria
    female
    (Photo: courtesy of Peter Marriott, Moths of Victoria: Part 7)

    The undersides are pale brown with a dark spot in the centre of each wing. Like most geometrids, the moth rests with wings outspread. The wingspan is about 4 cms.

    Ectropis fractaria
    male
    (Photo: courtesy of Marilyn Hewish, Moths of Victoria: Part 7)

    The species occurs in:

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

    Ectropis fractaria
    underside, female
    (Photo: courtesy of Marilyn Hewish, Moths of Victoria: Part 7)


    Further reading :

    Achille Guenée,
    Uranides et Phalénites,
    in Boisduval & Guenée:
    Histoire naturelle des insectes; spécies général des lépidoptères,
    Volume 9, Part 9 (1857), pp. 270-271, No. 424.

    Marilyn Hewish,
    Moths of Victoria: Part 7,
    Bark Moths and Allies - GEOMETROIDEA (D)
    ,
    Entomological Society of Victoria, 2016, pp. 30-31.


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    (updated 16 September 2013, 9 July 2018, 30 August 2020)