Lovely shots. According to Moths of Vic. Part 1 2nd Ed. CD pages E. fervens & E. guttularis "are quite variable and overlap in appearance and colour. The most reliable way to separate males is by checking for the presence of a dark patch underneath the hind wing." = E. fervens In E. guttularis the same area is white/pale. So possibly this is E. guttularis. The patches are clearer when the whole hind wing is visible as it is in the section closest to the body. What do you think Ian?
Agreed. Nice underside shot John, which corresponds to the notes of the MoV CD Part 1 2nd Edn, referred to above. Also see the good undesiside shot of E. guttarilis here:-https://lepidoptera.butterflyhouse.com.au/lasi/guttularis.html which also corresponds. But this shot is arguably better than your previous one of E, guttarilis which has been added to the sample images: Entometa guttarilis (Spotted Gum Moth) The underside of E. fervens is visible here on the Naturemapr sample pages for the species:-Entometa fervens