Didymoctenia exsuperata (Walker, 1860)
(previously known as Boarmia exsuperata)
Thick-lined Bark Moth
BOARMIINI ,   ENNOMINAE ,   GEOMETRIDAE ,   GEOMETROIDEA
 
Don Herbison-Evans
(donherbisonevans@outlook.com)
and
Cathy Young & Stella Crossley

Didymoctenia exsuperata
(Photo: copyright Cathy Young)

The early instars of this Caterpillar are off-white with some small dark dots, and a pale brown head.

Didymoctenia exsuperata
(Photo: copyright Cathy Young)

Later instars are green with some black spots, and have a reddish-brown head.

Didymoctenia exsuperata
(Photo: copyright Cathy Young)

The last instar is green but nearly covered in black dots.

Didymoctenia exsuperata
(Photo: copyright Cathy Young)

The adult moths are grey or brown with a complex pattern of light and dark markings, including two incomplete black lines across each hindwing, one across each forewing, and one across the thorax. The wingspan is about 3 cms.

Didymoctenia exsuperata
underside
(Photo: copyright of Brett and Marie Smith, at Ellura Sanctuary,

The species has been found in:

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


    Further reading :

    Marilyn Hewish,
    Moths of Victoria: Part 7,
    Bark Moths and Allies - GEOMETROIDEA (D)
    ,
    Entomological Society of Victoria, 2016, pp. 18-19, 22-23.

    Francis Walker,
    Geometrites (continued),
    List of the Specimens of Lepidopterous Insects in the Collection of the British Museum,
    Part 21 (1860), p. 393, No. 124.


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    (updated 24 July 2013)