Boarmia suasaria (Guenée, 1857)
(one synonym : Tephrosia gratularia, Walker, 1860)
Serrated Bark Moth
BOARMIINI,   ENNOMINAE,   GEOMETRIDAE,   GEOMETROIDEA
 
Don Herbison-Evans
(donherbisonevans@yahoo.com)
and
Stella Crossley

Boarmia suasaria
(Photo: courtesy of David Akers, Won Wron, Victoria)

The caterpillars of this species are green with thin white strpes, a brown head, and several yellow spots on each segment.

Boarmia suasaria
(Photo: courtesy of David Akers, Won Wron, Victoria)

The caterpillars have the same colours and segmented structure as the stems of their foodplant, so are very well camouflaged. They are very similar to the caterpillars of Munychryia senicula which feed on the same foodplant, and so are similarly camouflaged.

Boarmia suasaria
head, close-up
(Photo: courtesy of David Akers, Won Wron, Victoria)

The pupa is dark brown, with a length of about 1 cm.

Boarmia suasaria
(Photo: courtesy of David Akers, Won Wron, Victoria)

The adult moths have grey wings with brownish patches, each wing with various wiggly lines, including a black-edged white zigzag submarginal line and chequered fringes. The abdomen has alternating light and dark bands. The wingspan is about 3 cms.

Boarmia suasaria
female
(Photo: courtesy of Marilyn Hewish, Moths of Victoria: Part 7)

The species has been found in:

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

    Boarmia suasaria
    male
    (Photo: courtesy of Marilyn Hewish, Moths of Victoria: Part 7)

    This species is sometimes placed in the genus Hypomecis, but the genus of this species is under review, and so here we consider the species to be currently unplaced.

    Boarmia suasaria
    underside
    (Photo: courtesy of John Bromilow, Ainslie, Australian Capital Territory)


    Further reading :

    Achille Guenée,
    Uranides et Phalénites,
    in Boisduval & Guenée:
    Histoire naturelle des insectes; spécies général des lépidoptères,
    Volume 9, Part 9 (1857), p. 243, No. 363.

    Marilyn Hewish,
    Moths of Victoria: Part 7,
    Bark Moths and Allies - GEOMETROIDEA (D)
    ,
    Entomological Society of Victoria, 2016, pp. 26-27.


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    (updated 9 July 2010, 16 May 2023)