Jalmenus inous Hewitson, [1865]
(one synonym: Ialmenus menecles)
Inous Blue
ZESIINI , THECLINAE , LYCAENIDAE

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

(updated 24 June 2002)

The Caterpillar is flat and brown with light and dark dorsal stripes. It has tubercles on the thorax and last abdominal segent each with a bunch of short white hairs. It rest by day on the stems of foodplants just below ground level, and climbs up to feed nocturnally . Its foodplants include :

  • Sandplain Poison ( Gastrolobium microcarpum, FABACEAE ),
  • Marno ( Daviesia divaricata, FABACEAE ),
  • Spiny Bitter Pea ( Daviesia benthamii, FABACEAE ),
  • Beach Acacia ( Acacia cyanophylla = rostellifera, MIMOSACEAE ), and
  • Golden Wreath Wattle ( Acacia saligna, MIMOSACEAE ),

    and is always to be attended by numbers of small black ants :

  • Iridomyrmex conifer ( DOLICHODERINAE ), or
  • Iridomyrmex rufoniger ( DOLICHODERINAE ).

    The pupa is attached to the foodplant stem, again just below ground level.


    (Specimen: courtesy of the Macleay Museum, University of Sydney)

    The adult is metallic blue in colour with wide black wing margins. The veins on the hind wings are extended.


    (Specimen: courtesy of the Macleay Museum, University of Sydney)

    The undersurfaces of the wings are brown, marked with arcs of darker brown spots, and a subterminal arc of pale chevrons. There are orange-edged black spots under the rear margin of each hind wing. The wingspan is about 3 cms.

    The species occurs in Western Australia as two subspecies :

  • inous near the coast, and
  • notocrucifer inland.


    Further reading :

    Michael F. Braby, Butterflies of Australia, CSIRO Publishing, Melbourne 2000, vol. 2, pp. 730-731.


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