Grammodes geometrica (Fabricius, 1775)
 (one synonym : Phalaena ammonia Cramer, 1779)
EREBINAE,   EREBIDAE,   NOCTUOIDEA
 
Don Herbison-Evans
(donherbisonevans@yahoo.com)
and
Stella Crossley


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

The adult moths of this species have a large dark brown triangle with a white line across it on each forewing.


drawing by Pieter Cramer, listed as Phalaena ammonia,
Uitlandsche kapellen voorkomende in de drie waereld-deelen,
Amsterdam Baalde, Volume 3 (1782), Plate CCL, fig. D,
image courtesy of Biodiversity Heritage Library, digitized by Smithsonian Libraries.

The species is found across south-east Asia, including

  • India,
  • Japan,
  • Philippines,

    and in Australia in

  • Northern Territory,
  • Queensland.

    Further reading :

    Pieter Cramer,
    Uitlandsche kapellen voorkomende in de drie waereld-deelen,
    Amsterdam Baalde, Volume 3 (1782), pp. 99-100, Fig. D, and also Plate 250, fig. D..

    Johan Christian Fabricius,
    Historiae Natvralis Favtoribvs,
    Systema Entomologiae,
    1775, p. 599, No. 37.

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    (updated 14 August 2008, 6 October 2025)