Using the Moths of Victoria (Part 4) visual key to Geometrinae, I don''t think this is. P. semicrocea. The termen of the hindwing is not produced to a slight point as in P. semicrocea, There is a distinct white costa which is not present in the key for P. semicrocea, neither does the key show a discal spot for P. semicrocea. Very faint black discal spot visible on forewing. There is no evidence of red at the apex of the forewing, but there is evidence of reddish extremities at several points at the forewing and hindwing margins as in Moths of Victoria 'Prasinocyma sp,(1)'. No black dots visible along the forewing and hindwing margins so not Chlorocoma externa. Perhaps we need a new category: 'Prasincocyma (genus)'.