Dysbatus stenodesma (Lower, 1899)
Arc Line-moth
 (previously known as Stibaroma stenodesma)
DIPTYCHINI,   ENNOMINAE,   GEOMETRIDAE,   GEOMETROIDEA
 
Don Herbison-Evans
(donherbisonevans@yahoo.com)
and
Stella Crossley

Dysbatus stenodesma
(Photo: courtesy of Donald Hobern, Aranda, Australian Capital Territory)

The moth is grey or brown or both, with pale and dark areas outlined in dark wavy zigzag lines. The dark line from the tip of the forewing just reaches the next wavy dark transverse line. The wingspan is about 3 cms.

Dysbatus stenodesma
(Photo: courtesy of CSIRO/BIO Photography Group, Centre for Biodiversity Genomics, University of Guelph)

The species has been found in:

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

    Dysbatus stenodesma
    underside
    (Photo: courtesy of John Bromilow, Ainslie, Australian Capital Territory)

    Further reading:

    Marilyn Hewish,
    Moths of Victoria: Part 5 - Satin Moths and Allies - GEOMETROIDEA (A),
    Entomological Society of Victoria, 2014, pp. 16-17, 19.

    Oswald B. Lower,
    Descriptions of new Australian Lepidoptera,
    Proceedings of the Linnean Society of New South Wales,
    Volume 24 (1899), pp. 87-88.

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    (updated 12 July 2010, 7 December 2019, 17 September 2020)