Dichromodes orthotis Meyrick, 1890 Western Heath Moth OENOCHROMINAE,   GEOMETRIDAE,   GEOMETROIDEA

Don Herbison-Evans (donherbisonevans@yahoo.com) and Stella Crossley

male
(Photo: courtesy of Helen Wakefield, Bullsbrook, Western Australia)

The adult moths of this species are brown, with a wide pale divergent band across each forewing, and plain fawn hindwings. The males and females have different patterns in the forewing pale band.

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

The males have a dark oblong spot in the forewing pale band, and have antennae that have a comb-like fringe on one side.

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

The females have a complex pattern in the pale forewing band, and have threadlike antennae. The wingspan of both sexes is about 2 cms.

The species occurs in

Western Australia.

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Further reading :

Edward Meyrick,
Revision of Australian Lepidoptera III,
Proceedings of the Linnean Society of New South Wales,
Series 2, Volume 4, Part 4 (1890), p. 1180, No. 40.

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(written 15 October 2022)