Thallarcha mochlina (Turner, 1899)
 (formerly known as Comarchis mochlina)
LITHOSIINI,   ARCTIINAE,   EREBIDAE,   NOCTUOIDEA
  
Don Herbison-Evans,
(donherbisonevans@yahoo.com)
and
Stella Crossley

Thallarcha mochlina
(Photo: courtesy of Dianne Clarke, Maleny, Queensland)

The adult moths of this species have yellow or off-white forewings, each with irregular dark brown margins, and crossed by two irregular dark brown stripes. The hindwings are off-white darkening towards the wingtips. The wingspan is about 2 cms.

Thallarcha mochlina
(Photo: courtesy of CSIRO/BIO Photography Group, Centre for Biodiversity Genomics, University of Guelph)

The species has been found in :

  • Queensland.

    Thallarcha mochlina
    female, drawing by George F. Hampson,
    Catalogue of the Arctiadæ (Nolinæ, Lithosianæ) in the Collection of the British Museum,
    Catalogue of the Lepidoptera Phalænæ in the British Museum,
    Volume II (1900), Plate XXXIII, Figure 18,
    image courtesy of Biodiversity Heritage Library, digitized by Smithsonian Libraries.

    Further reading:

    George F. Hampson,
    Catalogue of the Arctiadae (Nolinae, Lithosianae) in the Collection of the British Museum,
    Catalogue of the Lepidoptera Phalaenae in the British Museum,
    Volume 2 (1900), p. 505, No. 1083, and also Plate 33, Figure 18.

    A. Jefferis Turner,
    Descriptions of New Lepidoptera from Queensland,
    Transactions of the Royal Society of South Australia,
    Volume 23 (1896), pp. 20-21.

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    (written 3 February 2015, updated 4 June 2025)