Hypomecis externaria (Walker, 1866)
(previously known as Tephrosia externaria)
Mahogany Bark Moth
BOARMIINI,   ENNOMINAE,   GEOMETRIDAE,   GEOMETROIDEA
 
Don Herbison-Evans
(donherbisonevans@yahoo.com)
and
Cathy Byrne & Stella Crossley

Tephrosia externaria
(Photo: courtesy of Katarina Christenson, Melba, Australian Capital Territory)

The Caterpillars of this species have a complex brown pattern, and a short pair of horns on the second abdominal segment.

Tephrosia externaria
(Photo: courtesy of Katarina Christenson, Melba, Australian Capital Territory)

The caterpillar has been found feeding on

  • She Oak (Casuarina species, CASUARINACEAE).

    The caterpillar grows to length of about 5 cms.

    Tephrosia externaria
    male
    (Photo: courtesy of Donald Hobern, Aranda, Australian Capital Territory)

    The adult moths of this species are brown with a number of darker zigzag splotches on each wing. The wingspan is about 3 cms.

    Tephrosia externaria
    female
    (Photo: courtesy of CBG Photography Group, Centre for Biodiversity Genomics, University of Guelph)

    The species may be found in

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

    The genera into which this species formerly was placed (Tephrosia and Hypomecis) are inappropriate for this species. It and the species currently named Boarmia phloeopa and Boarmia panconita should all be placed in a new as yet undescribed genus.

    Tephrosia externaria
    underside
    (Photo: courtesy of Katarina Christenson, Melba, Australian Capital Territory)


    Further reading :

    Marilyn Hewish,
    Moths of Victoria: Part 7,
    Bark Moths and Allies - GEOMETROIDEA (D)
    ,
    Entomological Society of Victoria, 2016, pp. 26-27.

    Francis Walker,
    Catalogue of Lepidoptera Heterocera,
    List of the Specimens of Lepidopterous Insects in the Collection of the British Museum,
    Part 35, Supplement 5 (1866), p. 1591.


    previous
    back
    caterpillar
    Australian
    Australian Butterflies
    butterflies
    Australian
    home
    Lepidoptera
    Australian
    Australian Moths
    moths
    next
    next
    caterpillar

    (updated 21 June 2011, updated 16 July 2018, 28 October 2020, 22 March 2021)