Famegana alsulus (Herrich-Schaffer, 1869)
(previously known as : Zizeeria alsulus)
Black Spotted Grass Blue
POLYOMMATINI , POLYOMMATINAELYCAENIDAE

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

(update 13 May 2008)

Famegana alsulus
(Photo: courtesy of Martin Purvis)

This Caterpillar is green with a purple dorsal line bordered by wiggly yellow and purple lines. The last segment has a pair of white eversible tentacles. The Caterpillar feeds on the buds and flowers of various FABACEAE, such as ;

  • Cajanus pubescens,
  • Cajanus acutifolius, and
  • Forest Indigo ( Indigofera pratensis ).

    The Caterpillar is usually attended by small black ants.

    The pupa is mottled brown, held by anal hooks and girdle to a leaf or flower.

    Famegana alsulus
    male and female upper surfaces
    (Photo: courtesy of Yusuke Takanami & Yasuo Seki)

    The adult is dark grey fading to mauve at the bases, on the upper surfaces of the wings.

    Famegana alsulus
    male and female undersides
    (Photo: courtesy of Yusuke Takanami & Yasuo Seki)

    The under-surfaces of the wings are creamy fawn, with a black spot on the tornus of each hind wing. The wingspan is about 2 cms.

    The species occurs from the China to Tonga, including the Philippines, and

  • the north of Western Australia,
  • the Northern Territory,
  • Queensland, and
  • South Australia.


    Further reading :

    Michael F. Braby,
    Butterflies of Australia, CSIRO Publishing, Melbourne 2000, vol. 2, pp. 839-840.


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