Trigonodes hyppasia (Cramer, 1779)
(one synonym : Ophiusa anfractuosa Boisduval, 1833)
Triangle Owlet
EREBINAE,   EREBIDAE,   NOCTUOIDEA
 
Don Herbison-Evans
(donherbisonevans@yahoo.com)
and
Stella Crossley

Trigonodes hyppasia
(Photo: courtesy of Ian Common, from Moths of Australia)

The Caterpillars of this species are initially green becoming yellow as they mature, with purplish-brown lines alog the body. They only have two pairs of prolegs. The caterpillars have been found feeding on various plants including

  • Perennial Grass ( Chrysopogon species, POACEAE ), and
  • Lucerne ( Medicago sativa, FABACEAE ).

    Trigonodes hyppasia
    (Photo: courtesy of Trevor Jinks, North Burnett, Queensland)

    The adult moth has brown forewings each with two dark triangles outlined in white, and has plain brown hindwings. It has a wingspan of about 3 cms.

    Trigonodes hyppasia
    (Specimen: courtesy of the Macleay Museum, University of Sydney)

    The species may be found from Africa through Asia to the south Pacific, in :

  • Borneo,
  • Fiji,
  • India,
  • Namibia,
  • Taiwan,
  • Zimbabwe,

    as well as Australia in :

  • Western Australia,
  • Northern Territory,
  • Queensland,
  • New South Wales, and
  • Victoria.

    Trigonodes hyppasia
    underside
    (Photo: courtesy of Trevor Jinks, North Burnett, Queensland)


    Further reading :

    Ian F.B. Common,
    Moths of Australia, Melbourne University Press, 1990, fig. 46.5, pl. 32.1, p. 452.

    Pieter Cramer,
    Uitlandsche kapellen voorkomende in de drie waereld-deelen,
    Amsterdam Baalde, Volume 3 (1782), p. 99, and also Plate 250, fig. E.

    Peter Marriott,
    Moths of Victoria - Part 8,
    Night Moths and Allies - NOCTUOIDEA(B)
    ,
    Entomological Society of Victoria, 2017, pp. 20-21.

    Buck Richardson,
    Tropical Queensland Wildlife from Dusk to Dawn Science and Art,
    LeapFrogOz, Kuranda, 2015, p. 156.


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    (updated 13 April 2013, 10 April 2017, 18 July 2021, 7 April 2022)