Key to adult males of Diplectroninae genera in Australia

1. Forewing fork 2 footstalk present...................................................... Smicrophylax Neboiss *

-. Forewing fork 2 sessile or stalk very short (e.g., Figs 1, 23, 24, 49, 77, 102)....................................... 2

2(1) In genitalia, coxopodite of each gonopod with mesal process (e.g., Figs 53, 59, 68)................... Austropsyche Banks

-. In genitalia, coxopodites of gonopods without mesal processes (e.g., Figs 3, 45, 104, 113)............................ 3

3(2) Dorsal head with paired anterolateral warts never more than partially and indistinctly divided (Figs 17–21); abdominal seg- ments IX and X partially or fully fused and with or without pair of simple lateral processes; phallus with or without sclerotised spines or numerous fine spicules distally (e.g., Figs 3, 42), without parameres.................... Diplectrona Westwood

-. Dorsal head with paired anterolateral warts clearly divided by distinct suture (Figs 146–150); abdominal segments IX/X usu- ally with lateral processes, often 2 pairs and sometimes very elaborate; phallus without spicules or sclerotised spines (e.g., Figs 106, 136), with or without basal parameres (e.g., Figs 106, 121, 123, 160)........................ Arcyphysa gen. nov.