Theretra oldenlandiae (Fabricius, 1775)
(one synonym : Deilephila argentata)
Impatiens Hawk Moth
MACROGLOSSINAE, SPHINGIDAE

Don Herbison-Evans ( donherbisonevans@yahoo.com )
&
Stella Crossley

(updated 4 November 2007)


young instars
(Photo: courtesy of Jan MacDonald, Mackay)

These Caterpillars can sometimes be a pest on :

  • Busy Lizzie ( Impatiens wallerana, BALSAMINACEAE ), and
  • Fuchsias ( Fuchsia species, ONAGRACEAE ),


    (Photo: courtesy of Michael Manning)

    in Sydney gardens. They are black with yellow spots, and a thin spine on its tail. As they walk, this spine does a cute wiggle. The head and thorax are rather narrower than the abdomen. Late instars develop yellow bands between segments.


    (Photo: courtesy of Clint Siggins, Newcastle)

    The Caterpillars have also been found feeding on a wide variety of other plants, including :

  • Arum Lily ( Zantedeschia aethiopica, ARACEAE ),
  • Argentine Trumpet Vine ( Clytostoma callistegioides, BIGNONIACEAE ),
  • Climbing Guinea Flower ( Hibbertia scandens, DILLENIACEAE ),
  • Billy Goat Plum ( Planchonia careya, LECYTHIDACEAE ),
  • Godetia ( Clarkia amoena, ONAGRACEAE ),
  • Star Cluster ( Pentas lanceolata, RUBIACEAE ),
  • Australian Native Violet ( Viola hederacea, VIOLACEAE ), and
  • Slender Grape ( Cayratia clematidea, VITACEAE ).


    (Photo: courtesy of Simon Hunt)


    (Photo: courtesy of Genevieve Schebeck)


    (Photo: courtesy of David Lewis)

    However, in captivity, they quite happily consume and thrive on:

  • Lettuce ( Lactuca sativa, ASTERACEAE ).

    They grow to a length of about 7 cms.


    (Photo: courtesy of Catriona Coote, Sydney)

    The Caterpillars pupate in a sparse dark cocoon in the leaf litter on the soil near the food plant. The pupa has a length of about 4 cms.


    (Photo: copyright Lyn Finn,
    Hunter Region School of Photography in Newcastle,
    Macquarie Hills, New South Wales)

    The adult moth is brown, with a light stripe edged with dark brown extending from the inner margin to the tip of each fore wing. It also has a pair of white stripes running along its back from its nose to its tail.


    (Photo: courtesy of Merlin Crossley)

    The species is found as various subspecies across most of south-east Asia, from India to Australia, including :

  • Borneo,
  • China,
  • the Philippines, and
  • Thailand.


    (Specimen: courtesy of the Macleay Museum, University of Sydney)

    In Australia, specimens have been taken in Western Australia, Queensland, New South Wales, and Victoria.


    Further reading :

    Ian F.B. Common,
    Moths of Australia, Melbourne University Press, 1990, p. 415.


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