Gnathothlibus erotus (Cramer, 1777)
(erroneously: Chaerocampa eras)
MACROGLOSSINAE ,   SPHINGIDAE

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

Gnathothlibus erotus
brown form
(Photo: courtesy of Susan Foyle, Sutherland)

The Caterpillar of this species can be brown with a dark line along each side, or green with a red line along each side.

Gnathothlibus erotus
green form
(Photo: courtesy of Jean Gundry, Queensland)

The line is interrupted by a series of eyespots of varying sizes: large at each end tapering to smaller in the middle. The claspers are black. It also has on the tail a brown curved horn ending in a black point which is strongly curved backwards nearly into a semicircle.

Gnathothlibus erotus
(Photo: courtesy of David and Tom Sleep, Queensland)

It feeds on a wide variety of plants, including the crops :

  • Sweet Potato ( Ipomoea batatas, CONVOLVULACEAE ),
  • Cultivated Grapes ( Vitis vinifera, VITACEAE ),

    as well as :

  • Red Beech ( Dillenia alata, DILLENIACEAE ),
  • Redclaws ( Escallonia macrantha, GROSSULARIACEAE ),
  • Australian Native Lasiandra ( Melastoma affine, MELASTOMATACEAE ),
  • Star Cluster ( Pentas lanceolata, RUBIACEAE ),
  • Hairy Water Vine ( Cayratia acris, VITACEAE ), and
  • Bandicoot Berry ( Leea indica, VITACEAE ).

    Gnathothlibus erotus
    pupa
    (Photo: courtesy of David and Tom Sleep, Queensland)

    The caterpillar pupates in the soil. The pupa is brown with a series of black spots along each side of the abdomen.

    Gnathothlibus erotus
    (Photo: courtesy of David and Tom Sleep, Queensland)

    The adults have brown fore wings with a faint pattern of light and dark markings, and bright yellow hind wings with dark margins. The moths have a wingspan of about 7 cms.

    Gnathothlibus erotus
    (Photo: courtesy of David and Tom Sleep, Queensland)

    The eggs are green and spherical. They are laid singly on foodplant foliage.

    Gnathothlibus erotus
    egg, magnified
    (Photo: courtesy of David and Tom Sleep, Queensland)

    The species is found as various subspecies from India across to the south Pacific, including:
  • Borneo,
  • Cook Islands,
  • Papua,
  • Philippines,
    and the subspecies eras occurs in:
  • New South Wales,
  • Northern Territory, and
  • Queensland
    in Australia.


    Further reading :

    Ian F.B. Common,
    Moths of Australia, Melbourne University Press, 1990, pls. 16.7, 29.3, pp. 71, 412.

    Peter Marriott,
    Moths of Victoria: Vol 1: Bombycoidea,
    Entomological Society of Victoria, 2008, pp. 24-29.

    Buck Richardson,
    Mothology,
    LeapFrogOz, Kuranda, 2008, p. 36.

    Paul Zborowski and Ted Edwards,
    A Guide to Australian Moths, CSIRO Publishing, 2007, p. 169.


  • Gnathothlibus erotus
    Fiji
    , 2001

    Gnathothlibus erotus
    Samoa
    , 1971

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    (updated 1 March 2010)