Cyclotorna egena Meyrick, 1912
CYCLOTORNIDAE ,   ZYGAENOIDEA
 
Don Herbison-Evans
(donherbisonevans@outlook.com)
and
Stella Crossley

Cyclotorna egena
early larva, black and white line drawing by H. Knight
,
in Dodds & Meyrick: 'Some remarkable ant-friend Lepidoptera of Queensland',
Transactions of the Entomological Society of London, 1911, Plate XLVIII, fig. 16,
image courtesy of Biodiversity Heritage Library, digitized by Smithsonian Libraries.

Caterpillars in this family are unusual in that they superficially resemble Woodlice ( ONISCIDEA ). They feed on the dried sugary masses created by

  • Leaf Hoppers ( PSYLLIDAE )

    Cyclotorna egena
    cocoon with partly extruded pupal skin, black and white line drawing by H. Knight
    ,
    in Dodds & Meyrick: 'Some remarkable ant-friend Lepidoptera of Queensland',
    Transactions of the Entomological Society of London, 1911, Plate XLVIII, fig 17,
    image courtesy of Biodiversity Heritage Library, digitized by Smithsonian Libraries.

    The caterpillars form a cocoon on the branch of the tree where they were feeding.

    Cyclotorna egena
    (Photo: courtesy of CSIRO/BIO Photography Group, Centre for Biodiversity Genomics, University of Guelph)

    Adult moths have dark brown wings, with a vague dark mark on each forewing. The wingspan is about 1.5 cms.

    The species has been found in Australia in

  • Western Australia,
  • Northern Territory
  • Queensland,
  • New South Wales, and
  • South Australia.


    Further reading :

    Edward Meyrick,
    Supplement to F.P. Dodds' Some remarkable ant-friend Lepidoptera of Queensland,
    Transactions of the Entomological Society of London,
    1911, pp. 589-590 and also Plate 48, figs. 16 & 17.


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    (written 2 April 2017)