Castulo doubledayi Newman, 1857
Doubleday's Footman
(one synonym : Castula binotata Walker, 1869)
LITHOSIINI,   ARCTIINAE,   EREBIDAE,   NOCTUOIDEA
  
Don Herbison-Evans,
(donherbisonevans@yahoo.com)
and
Stella Crossley

Castulo doubledayi
(Photo: courtesy of David Akers, Won Wron, Victoria)

The caterpillars of this species are dark grey with brown verrucae.

Castulo doubledayi
(Drawing by E. Anderson, ca. 1900, Archives of Museum Victoria, Moths of Victoria: Part 2)

The head is flat and black with brown sides. The legs are brown.

Castulo doubledayi
(Photo: courtesy of David Akers, Won Wron, Victoria)

When threatened, the caterpillar curls into a defensive spiral with the head in the centre.

Castulo doubledayi
defensive posture
(Photo: courtesy of David Akers, Won Wron, Victoria)

The pupa is bulbous and dark brown. It is formed in a loose cocoon in a sheltered spot.

Castulo doubledayi
(Photo: courtesy of David Akers, Won Wron, Victoria)

The male and female adult moths are very similar, and have black forewings each with a variable yellow spot on the hind margin and a yellow mark along the costa.

Castulo doubledayi
(Photo: courtesy of Mark Heath, Tenterden, Western Australia)

The hindwings are yellow with variable black margins, and each has a variable dark spot near the middle. The head and thorax are black except for an orange prothorax. The wingspan is up to 3 cms.

Castulo doubledayi
(Photo: courtesy of Mark Heath, Tenterden, Western Australia)

The species is found in:

  • New South Wales,
  • Australian Capital Territory,
  • Victoria,
  • Tasmania,
  • South Australia, and
  • Western Australia.

    Castulo doubledayi
    underside
    (Photo: courtesy of Mark Heath, Tenterden, Western Australia)

    The adult moths have a coiled haustellum under the head, which they can uncoil, and through which they can sip nectar from flowers.

    Castulo doubledayi
    underside close-up of head
    (Photo: courtesy of Mark Heath, Tenterden, Western Australia)


    Further reading :

    Ian F.B. Common,
    Moths of Australia,
    Melbourne University Press, 1990, pl. 18.10, p. 436.

    Peter Marriott,
    Moths of Victoria - Part 2,
    Tiger Moths and Allies - NOCTUOIDEA (A)
    ,
    Entomological Society of Victoria, 2009, pp. 22-23.

    Edward Newman,
    Characters of a few apparently undescribed Insects collected by James Gibbon, Esq., at Moreton Bay,
    Transactions of the Entomological Society of London,
    New Series, Volume IV, Part 8 (1857), pp. 55-56, No. 1.


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    (updated 22 March 2011, 5 May 2023)