Eurythecta robusta

[3] Later in the same publication, thinking he was describing a separate species, Butler also named this moth Steganoptycha negligens.

[8] The type locality of this species is likely Yaldhurst/West Melton in Christchurch and this area is now largely modified by the development of lifestyle blocks.

[9] The species has occurred at Kaitorete Spit, Gore Bay, Porters Pass, McLeans Island, and has surviving populations at Ashburton, and at the mouths of the Rangitata and Hinds rivers.

[6][9] This species has been classified as having the "At Risk, Naturally Uncommon" conservation status under the New Zealand Threat Classification System.

[10] The main threat to this species is the destruction of its original habitat both by urban development and by farming practises.

1827 illustration by Edgar Albert Smith