Erina geminus Edwards & Kerr, 1978
Large Dusky-blue
(formerly known as Candalides geminus)
CANDALIDINI,   POLYOMMATINAE,   LYCAENIDAE,   PAPILIONOIDEA
 
Don Herbison-Evans
(donherbisonevans@yahoo.com)
and
Stella Crossley

Erina geminus
female
(Photo: courtesy of CSIRO/BIO Photography Group, Centre for Biodiversity Genomics, University of Guelph)

This Caterpillar is green with a dark line along the back, and yellow lines along the sides edged in purple. There are red tubercles along the back. It feeds openly by day on :

  • Downy Dodder ( Cassytha pubescens, LAURACEAE ).

    It grows to a length of about 1.5 cms.

    The pupa is pale brown with dark markings, and has a lenght of about 1.3 cms. It is held by anal hooks and girdle on the food or a nearby plant.

    Erina geminus
    male
    (Photo: courtesy of CSIRO/BIO Photography Group, Centre for Biodiversity Genomics, University of Guelph)

    The male butterflies on top are a bronzed purple. The females are dark brown with a purple sheen over the centres of the forewings. The adult butterflies have a wingspan of about 3 cms.

    Erina geminus
    underside
    (Photo: courtesy of CSIRO/BIO Photography Group, Centre for Biodiversity Genomics, University of Guelph)

    Underneath, they are both pale grey with arcs of dark marks, and there are two prominent black spots under the tornus of each forewing.

    The eggs are white, round, and flattened with a rough surface. Their diameter is about 0.7 mm. They are laid singly on flower buds of a foodplant.

    This species is found in

  • Northern Territory,
  • Thursday Island,
  • Queensland, and
  • New South Wales.


    Further reading :

    Michael F. Braby,
    Butterflies of Australia, CSIRO Publishing, Melbourne 2000, vol. 2, pp. 766-767.

    Ted (E.D.) Edwards & John Foxton Ross Kerr,
    A new species of Candalides from eastern Australia and notes on Candalides hyacinthinus (Semper) (Lepidoptera: Lycaenidae),
    Australian Entomological Magazine,
    Volume 4, Part 5 (1978), p. 82.


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    (updated 17 March 2004, 31 October 2013, 5 January 2018, 8 July 2020, 6 March 2021)