Taractrocera anisomorpha (Lower, 1911)
Orange Grass Dart
(previously known as Bibla anisomorpha)
HESPERIINAE ,   HESPERIIDAE ,   HESPERIOIDEA
  
Don Herbison-Evans,
(donherbisonevans@outlook.com)
and
Stella Crossley

Taractrocera anisomorpha
male
(Photo: courtesy of Wes Jenkinson)

This Caterpillar is pale green with a brown dorsal line. The head is pale brown. It has been found feeding on :

  • Tufted Bristlegrass ( Setaria paspalidioides ),
  • Silky Browntop ( Eulalia aurea ), and
  • Sorghum ( Sorghum bicolor ),

    all in the Grass family POACEAE. The Caterpillar grows to a length of about 2 cms.

    Taractrocera anisomorpha
    female
    (Photo: courtesy of Wes Jenkinson)

    The adult butterflies of this species are dark brown on top with orange markings. The wingspan is usually a bit over 2 cms. The females are a little larger than the males, and have a more convex forewing margin.

    Taractrocera anisomorpha
    underside
    (Photo: courtesy of Wes Jenkinson)

    Underneath, they are yellow with pale yellow markings, although the forewings are darker toward the trailing edges.

    The species may be found in open eucalypt forest over the northern half of Australia, including:

  • Northern Territory,
  • Queensland,
  • South Australia, and
  • Western Australia.


    Further reading :

    Michael F. Braby,
    Butterflies of Australia, CSIRO Publishing, Melbourne 2000, vol. 1, pp. 194-195.

    Oswald B. Lower,
    Revision of the Australian Hesperiadae,
    Transactions of the Royal Society of South Australia,
    Volume 35 (1911), p. 146, No. 68.


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    (updated 18 February 2010, 22 September 2013)