Oreisplanus perornata (Kirby, 1893)
Montane or Mountain Spotted Skipper
(previously known as Hesperilla perornata)
TRAPEZITINAE ,   HESPERIIDAE ,   HESPERIOIDEA
 
Don Herbison-Evans
(donherbisonevans@outlook.com)
and
Stella Crossley

This Caterpillar is green with black dots and a dark dorsal line. Its head is pale brown with a dark line. It lives by day in a shelter made from blades of grass curled and joined with silk, and feeds at night. It has been found feeding only on:

  • Red Fruit Saw Sedge ( Gahnia sieberiana, CYPERACEAE ).

    It pupates in its larval shelter.


    female
    (Photo: courtesy of Museum Victoria)

    The upper side of the adult butterfly is dark brown with a number of pale yellow spots on each fore wing, and a pale yellow band on each hind wing. Each wing also has a narrow chequered border. Underneath, the fore wings are dark brown with pale yellow patches, and the hind wings are white with arcs of dark brown spots. The wing span is about 3 cms.

    The eggs are white and laid singly on the leaves of a foodplant.


    male
    (Photo: courtesy of Museum Victoria)

    The species is found in the mountains of

  • New South Wales, and
  • Victoria.


    Further reading :

    William Forsell Kirby,
    Descriptions of new Australian Hesperiidae,
    Annals and Magazine of Natural History,
    Series 6, Volume 12 (1893), p. 437.


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    (updated 25 July 2004, 28 September 2013)