Hectobrocha pentacyma Meyrick, 1886
LITHOSIINAE , ARCTIIDAE , NOCTUOIDEA

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

(updated 16 November 2009)

Hectobrocha pentacyma larva
(Photo: courtesy of the Macleay Museum, University of Sydney)

This is a small brown hairy Caterpillar which grows to about 1 cm. It lives in a group of its own kind. The ones in the photograph were on the stem of a bush of:

  • Hydrangea (Hydrangea arborescens, SAXIFRAGACEAE ),

    but were suspected of feeding on algae or dead leaves, and just resting on a Hydrangea stem.

    They pupated in thin loose cocoons on the stem.

    Hectobrocha pentacyma

    The adult moths are small and pale yellow, with dark brown zigzag markings and dots on the forewings. The moths have a wingspan of about 2 cms.

    Hectobrocha pentacyma
    (Specimen: courtesy of the The Australian Museum)

    The specimens shown here were caught in Sydney. The species also occurs in Queensland and Victoria.


    Further reading:

    Peter Marriott,
    Moths of Victoria: Vol 2: ARCTIIDAE AND ITS ALLIES,
    Entomological Society of Victoria, 2009, pp. 22-23.


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