Paralaea atralba McQuillan, Young, & Richardson, 2001
Black-and-White Crest-moth
DIPTYCHINI,   ENNOMINAE,   GEOMETRIDAE,   GEOMETROIDEA
 
Don Herbison-Evans
(donherbisonevans@yahoo.com)
and
Cathy Byrne & Stella Crossley


fifth instar
(Photo: copyright Cathy Byrne)

When young, these Caterpillars are yellow with a light brown dorsal band. Mature larvae are green with a prominent lateral stripe consisting of raised bright orange spots on a yellowish-green background. The head is pale yellowish-green with a dark pink crown.

The ventral prolegs on abdominal segment six are complete, but those on segment five are reduced, and those on segments four and three are reduced even furthers.

The caterpillars feed on the foliage of :

  • various Gum Trees ( Eucalyptus, MYRTACEAE ).


    male
    (Photo: copyright Cathy Byrne)

    The adult moth has uniformly dark brown forewings. The hindwings are fawn at the margins fading to white at the bases. The moths have a wingspan of about 5 cms.


    female
    (Photo: courtesy of Marilyn Hewish, Moths of Victoria: Part 5)

    The eggs are laid in a distinctive formation, at a slight angle to the substrate, and slightly overlapping each other, like roof shingles. The eggs are initially pale yellow, changing later become transparent. They appear to hatch after rain.

    The species is found in

  • inland New South Wales,
  • Victoria,
  • South Australia, and
  • Western Australia.


    Further reading :

    Marilyn Hewish,
    Moths of Victoria: Part 5 - Satin Moths and Allies - GEOMETROIDEA (A),
    Entomological Society of Victoria, 2014, pp. 28-29.

    Peter B. McQuillan, Catherine J. Young, & Alistair M.M. Richardson,
    A revision of the Australian moth genus Paralaea Guest (Lepidoptera: Geometridae: Ennominae),
    Invertebrate Taxonomy,
    Volume 15, part 3 (2001), pp. 277-317.

    Cathy Byrne,
    Characterisation of the Australian Nacophorini and a Phylogeny for the Geometridae from Molecular and Morphological Data,
    Ph.D. thesis, University of Tasmania, 2003.


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    (updated 4 March 2005, 7 January 2013, 13 January 2016, 9 JUly 2018)