Pseudotheta syrtica (Meyrick, 1902)
(previously known as Paratheta syrtica)
CHEZALA GOUP
OECOPHORINAE,   OECOPHORIDAE,   GELECHIOIDEA
 
Don Herbison-Evans,
(donherbisonevans@yahoo.com)
and
Stella Crossley

Pseudotheta syrtica
(Photo: courtesy of Ian McMillan, Imbil, Queensland)

This Caterpillar probably feeds on the ground on dead leaves of

  • Gum Trees ( Eucalyptus species, MYRTACEAE ).

    The adult moth has long pointed pale brown forewings, each with a variable vague pale streak along the middle of the wing, and with some darker brown spots. The hindwings are also pointed, and are pale brown, darkening at the wingtips. The wingspan is about 1.2 cms.

    Pseudotheta syrtica
    showing extended abdominal organ
    (Photo: courtesy of Katarina Christenson, Melba, Australian Capital Territory)

    Some moths of this species display two thin spikes from the tip of the abdomen, and some show an extended organ, protruding from the tip of the abdomen.

    The species has been found in:

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

    Pseudotheta syrtica
    showing pair of spikes at the tip of the abdomen
    (Photo: courtesy of CSIRO/BIO Photography Group, Centre for Biodiversity Genomics, University of Guelph)


    Further reading :

    Ian F.B. Common,
    Oecophorine Genera of Australia II: The Chezala, Philobota and Eulechria groups (Lepidoptera: Oecophoridae),
    Monographs on Australian Lepidoptera Volume 5,
    CSIRO Publishing, 1997, pp. 27, 28, 30.

    Edward Meyrick,
    Descriptions of new species of Lepidoptera (Oecophoridae),
    Transactions of the Royal Society of South Australia,
    Volume 26 (1902), p. 174.


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    (written 6 October 2018)