Stethopachys formosa Baly, 1861
Dendrobium Beetle
CHRYSOMELIDAE ,   COLEOPTERA
  
Don Herbison-Evans
(donherbisonevans@outlook.com )
and
Stella Crossley


(Photo: courtesy of Harold McQueen, Goodna, Queensland)

These grubs are not true Caterpillars, but are the larvae of Stethopachys formosa, which are beetles in the family CHRYSOMELIDAE. They are a pest in Australia on

  • Orchids.

    The larvae are off-white with a black head. The larvae grow to a length of about 2 cms.


    foam around borehole where pupation occurs
    (Photo: courtesy of Harold McQueen, Goodna, Queensland)

    The larvae bore into the budding stem of an Orchid, and create a stiff mess of foam around the borehole entrance, and pupate in their borehole.


    (Photo: courtesy of Harold McQueen, Goodna, Queensland)

    The adult beetle is yellow-brown with a black band across the back, and black tips to the elytra, and black eyes, antennae, and legs. The beetles have a length of about 2 cms.

    The eggs are tiny and white, laid singly on orchid buds.

    The species is found in

  • Queensland,
  • New South Wales, and
  • Victoria.


    Further reading :

    Joseph Sugar Baly,
    Descriptions of new genera and species of Phytophaga,
    Journal of Entomology,
    Volume 1 (1861), p. 194.


    Link to
    Other Non-Caterpillars

    Australian
    Australian Butterflies
    butterflies
    Australian
    home
    caterpillars
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    moths

    (written 8 April 2017)