Dirce species
ARCHIEARINAE ,   GEOMETRIDAE

Don Herbison-Evans ( donherbisonevans@yahoo.com )
and
Catherine J. Young & Stella Crossley


(Photo: copyright Catherine J. Young)

The Caterpillars of this species are green and knobbly, with a yellow dorsal line. They feed during the autumn months on the foliage of prostrate alpine conifers such as:

  • Microstrobos niphophilus, ( PODOCARPACEAE ), and
  • Diselma archeri, ( CUPRESSACEAE ).

    The pupa is initially green, and formed in a flimsy white silk cocoon to which are attached pieces of the last cast off larval skin.


    (Photo: copyright Catherine J. Young)

    The adults are diurnal, flying in the daytime in early summer. The moths are moderately small and cryptically coloured, and rather dull in colouration and appearance. It lack the flash colouration present on the hindwings of Dirce lunaris and Dirce solaris.


    (Photo: copyright Catherine J. Young)

    The eggs are minutely pitted and oval. Initially they are white, and turn red as they approach hatching.


    eggs, magnified
    (Photo: copyright Catherine J. Young)

    The species occurs in Tasmania. It appears to be limited in distribution to Mt Field in southern Tasmania, although this is most likely an artifact of collection. It is similar in coloration to and sympatric with with Dirce oriplancta, which is usually the dominant species.

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    (updated 21 June 2005)