Selidosema penthearia Guenée, 1857
(formerly known as Hypomecis penthearia)
(also known as Isturgia penthearia)
Delta Geometrid
MACARIINI,   ENNOMINAE,   GEOMETRIDAE,   GEOMETROIDEA
 
Don Herbison-Evans
(donherbisonevans@outlook.com)
and
Cathy Byrne & Stella Crossley


early instar
(Photo: courtesy of Steve Williams, Moths of Victoria: Part 7)

These Caterpillars are loopers, having most prolegs missing. The caterpillars are initially green with yellow between the segments.


later instar
(Photo: courtesy of Steve Williams, Moths of Victoria: Part 7)

The caterpillars later become green with faint pale lines along the body. Later still, some turn brown.


brown mature instar
(Photo: copyright Cathy Byrne)

The caterpillars of this species are thought to feed on phyllodinous Wattles such as :

  • Golden Wattle ( Acacia pycnantha ).


    pupa
    (Photo: courtesy of Steve Williams, Moths of Victoria: Part 7)

    The pupa is brown with a length of about 2 cms.


    male
    (Photo: courtesy of Peter Marriott, Moths of Victoria: Part 7)

    The adult moths are greyish-brown, sometimes with a dark band across each forewing and/or sometimes dark brown spots on each wing. The wingspan is about 3 cms.


    male
    (Photo: courtesy of Peter Marriott, Moths of Victoria: Part 7)

    The males have feathery antennae. The females have thread-like antennae.


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

    The eggs are oval and pale green, and covered in white pimples.


    eggs, magnified
    (Photo: copyright Cathy Byrne)

    The species is found in

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


    underside, male
    (Photo: courtesy of Jenny Holmes)


    Further reading :

    Achille Guenée,
    Uranides et Phalénites,
    in Boisduval & Guenée:
    Histoire naturelle des insectes; spécies général des lépidoptères,
    Volume 9, Part 10 (1857), p. 146, No. 1161.

    Marilyn Hewish,
    Moths of Victoria: Part 7,
    Bark Moths and Allies - GEOMETROIDEA (D)
    ,
    Entomological Society of Victoria, 2016, pp. 16-17.


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    (updated 20 July 2010, 11 August 2018)