The forewings of Philobota lysizona and Eusemocosma pruinosa have complex dark markings on a white background. There are differences between the species , but they can be difficult to see, especially if the moth is a little worn.
A simple distinction is the thorax colour. The E. pruinosa thorax is fully white, although closed wing specimens show a few black scales crossing the body just behind the thorax. The P. lysizona thorax is white with a prominent black band across it.
Both species have yellow heads. In P. lysizona it is more prominent, but it fades with wear, and over time in set specimens. E. pruinosa has a more subtle yellow head which fades even more.
E. pruinosa is the smaller species with narrower forewings and more pointed hindwings.
Eusemocosma pruinosa is listed in the following regions:
Canberra & Southern Tablelands | Greater Brisbane
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ANBG South Annex Aranda Bushland Black Mountain Block 402 Bruce Ridge Bruce Ridge to Gossan Hill Bungonia National Park Denman Prospect 2 Estate Deferred Area (Block 12) Dryandra St Woodland Goorooyarroo NR (ACT) Hughes Grassy Woodland Lower Molonglo Molonglo River Reserve Mount Jerrabomberra Namadgi National Park Piney Ridge QPRC LGA Red Hill to Yarralumla CreekSurvey points
Black Mountain NR (BMS) GG182 GG289Places
Ainslie, ACT Aranda, ACT Belconnen, ACT Bruce, ACT Bungonia, NSW Canberra Central, ACT Cook, ACT Dunlop, ACT Forde, ACT Hawker, ACT Hughes, ACT Jerrabomberra, NSW Melba, ACT Molonglo Valley, ACT O'Connor, ACT Rendezvous Creek, ACT Scullin, ACT Stromlo, ACT Wamboin, NSW