Cryptophlebia ombrodelta (Lower, 1898)
Macadamia Nutborer
(previously known as Arotrophora ombrodelta)
OLETHREUTINAE ,   TORTRICIDAE ,   TORTRICOIDEA
  
Don Herbison-Evans
(donherbisonevans@outlook.com)
and
Stella Crossley

Cryptophlebia ombrodelta
(Photo: courtesy of Graeme Cocks, Townsville)

This Caterpillar is a pest on a variety of cultivated trees, such as:

  • Macadamia ( Macadamia integrifolia, PROTEACEAE ),
  • Lychee ( Litchi chinensis, SAPINDACEAE )
  • Orchid Trees ( Bauhinia species, CAESALPINIACEAE ),
  • Barbados Pride ( Caesalpinia pulcherrima, CAESALPINIACEAE ),
  • Poinciana ( Delonix regia, CAESALPINIACEAE ),
  • Tamarind ( Tamarindus indica, CAESALPINIACEAE ), and
  • various Wattles ( Acacia species, MIMOSACEAE ).

    The caterpillars penetrate the young fruit, and feed on the kernel inside.

    The adult moths are brown, with a variable dark tip to each forewing. The females have a black triangular mark on inner margin of each forewing. The males have a dark smudge along the inner margin, and erectavble scales behind the thorax. The hindwings are pale brown, and each has a recurve in the margin. The wingspan is about 2 cms. The moths are active in the summer months.

    The eggs of this species are white, round and flat, and have a diameter of about 1 mm. They are laid in small groups, up to 15, on the fruit.

    The pheromones of this species have been identified. Various methods of control have been proposed, including:

  • Mating Disruption,
  • Hot Water,
  • Irradiation,
  • Insecticides,
  • Egg parasite Trichogramma cryptophlebiae ( TRICHOGRAMMATIDAE ),
  • Larval parasitoid Brachymeria pomonae ( CHALCIDIDAE ),
  • Larval parasitoid Brachon species ( BRACONIDAE ), and
  • Larval parasitoid Gotro bimaculata ( ICHNEUMONIDAE ).

    The species occurs from India to the Philippines, including

  • Hawaii,
  • Hong Kong,
  • Micronesia,
  • Vietnam,

    and in Australia, including:

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


    Further reading :

    Ian F.B. Common,
    Moths of Australia, Melbourne University Press, 1990, fig. 28.8, pp. 58-59, 68, 280.


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    (updated 9 October 2012, 2 December 2014)