Psilogramma increta (Walker, [1865])
(one synonym : Sphinx strobi Boisduval, 1868)
MACROGLOSSINAE ,   SPHINGIDAE ,   BOMBYCOIDEA
 
Don Herbison-Evans,
(donherbisonevans@outlook.com)
and
Stella Crossley

Psilogramma increta
(Photo: courtesy of Buck Richardson, Kuranda, Queensland)

The Caterpillar is green, with a strong straight often dark horn on its tail pointing backwards, a series of diagonal white stripes or patches on its sides, and somwtimes with dark marks also on the sides of some segments. The caterpillar grows to a length of about 8 cms. Its many foodplants include :

  • Chinese Privet ( Ligustrum sinensis, OLEACEAE ),

    as well as many other plants from the families :

  • OLEACEAE,
  • SCROPHULARIACEAE, and
  • VERBENACEAE.

    Psilogramma increta
    (Photo: courtesy of Tom and David Sleep, Queensland)

    The pupa is brown with a curved extension for the developing haustellum.

    Psilogramma increta
    (Photo: courtesy of Tom and David Sleep, Queensland)

    The adult moths have forewings that are grey-brown with a pattern of light and dark markings. The hindwings are brown.The undersides are just plain grey-brown. The wingspan is about 10 cms.

    Psilogramma increta
    (Photo: courtesy of John Stumm, Brisbane, Queensland)

    The eggs are pale green when laid, turning reddish brown as hatching approaches. They are spherical with a diameter of about 2 mms. They are laid singly on the leaves of a foodplant.

    Psilogramma increta
    underside
    (Photo: courtesy of John Stumm, Brisbane, Queensland)

    The species is found over south-east Asia and the Pacific, including

  • China,
  • Hawaii,
  • Hong Kong,
  • India,
  • Japan,
  • Thailand,

    as well as in Australia in

  • north of Western Australia,
  • Northern Territory,
  • Queensland, and
  • New South Wales.

    Psilogramma increta
    (Photo: courtesy of Tom and David Sleep, Queensland)


    Further reading:

    Francis Walker,
    List of the Specimens of Lepidopterous Insects in the Collection of the British Museum,
    Catalog of Lepidoptera Heterocera. Seventh Series,
    Part 31 (1864), pp. 36-37.


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    (updated 3 March 2013, 25 February 2015)