Opsirhina lechriodes (Turner, 1911)
Elusive White Spotted Snout Moth
(previously known as Rhathymodes lechriodes)
LASIOCAMPINAE,   LASIOCAMPIDAE,   BOMBYCOIDEA
 
Don Herbison-Evans
(donherbisonevans@yahoo.com)
and
Mike & Pat Coupar
and
Stella Crossley

Opsirhina lechriodes
early instar
(Photo: courtesy of TimL, Australian National Botanical Gardens, Australian Capital Territory)

Early instars of this caterpillar are hairy, and are pale grey or brown, with red markings. When disturbed : the caterpillars display red markings between the segments of the thorax.

In later instars : the red markings become shades of grey in a subtle pattern that looks like the wrinkled bark of a branch.

Opsirhina lechriodes
later instar
(Photo: courtesy of David Akers, Won Wron, Victoria)

When disturbed : late instars display black markings on the thorax.

Opsirhina lechriodes
late instar display posture
(Photo: courtesy of David Akers, Won Wron, Victoria)

The caterpillar feeds on:

  • various species of Gum Trees ( Eucalyptus, MYRTACEAE ).

    The caterpillar grows to a length of up to 6 cms.

    Opsirhina lechriodes
    (Photo: courtesy of David Akers, Won Wron, Victoria)

    It pupates in a cocoon on the foodplant.

    Opsirhina lechriodes
    female adult
    (Photo: courtesy of Donald Hobern, Aranda, Australian Capital Territory)

    The male and female adult moths are different. The females are stout and brown, with a wingspan of about 5 cms.

    Opsirhina lechriodes
    male adult
    (Photo from: "Flying Colours", Coupar & Coupar, 1992)

    The males are smaller with a white spot in the middle of each forewing. They have a wingspan of about 4 cms.

    Opsirhina lechriodes
    male adult
    (Specimen: courtesy of the Macleay Collection, Chau Chak Wing Museum, University of Sydney)

    The species has been found in :

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

    Opsirhina lechriodes
    female adult
    (Photo: courtesy of Peter Marriott, Moths of Victoria - Part 1)


    Further reading :

    Ian F.B. Common,
    Moths of Australia,
    Melbourne University Press, 1990, p. 389.

    Pat and Mike Coupar,
    Flying Colours,
    New South Wales University Press, Sydney 1992, p. 58.

    Peter Marriott,
    Moths of Victoria - Part 1,
    Silk Moths and Allies - BOMBYCOIDEA
    ,
    Entomological Society of Victoria, 2008, pp. 6-9.

    A. Jefferis Turner,
    Studies in australian Lepidoptera,
    Annals of the Queensland Museum,
    Volume 10 (1911), p. 89.


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    (updated 30 March 2008, 6 April 2013, 17 December 2021)