Epitymbia isoscelana (Meyrick, 1881)
(one synonym is Conchylis thetis Butler, 1882)
EPITYMBIINI,   TORTRICINAE,   TORTRICIDAE,   TORTRICOIDEA
  
Don Herbison-Evans
(donherbisonevans@outlook.com)
and
Stella Crossley

Epitymbia isoscelana
male
(Photo: courtesy of Elaine McDonald, Nicholls Rivulet, Tasmania)

The adult moths of this species are dimorphic. The forewings of the males are rusty brown, each with a prominent dark-edged pale triangle on the costa.

Epitymbia isoscelana
male
(Photo: courtesy of CSIRO/BIO Photography Group, Centre for Biodiversity Genomics, University of Guelph)

The female moths have pale brown forewings each of which appear to crossed by three dark irregular diagonal bars, the basal and marginal bars being broken. The hindwings of both sexes are off-white. The wingspan of both sexes is about 2 cms.

Epitymbia isoscelana
female
(Photo: courtesy of CSIRO/BIO Photography Group, Centre for Biodiversity Genomics, University of Guelph)

The species has been found in :

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


    Further reading :

    Edward Meyrick,
    Revision of Australian Tortricina,
    Proceedings of the Linnean Society of New South Wales,
    Series 1, Volume 6, Part 3 (1881), pp. 469-472, No. 2.


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    (written 17 October 2019)