Key to Australian Lamprolonchaea species

1 Frons shiny-black and covered in irregular punctures (rugose) (Figs. 45–46); body length 3.5–4.5 mm ...................... .............................................................. L. brouniana Bezzi, 1919 (syn. L. splendida Broun & L. rugosifrons Bezzi)

- Frons dull or shiny-black, smooth without punctures; body length <3.5 mm .............................................................. 2

2 Body rich emerald-green colour; frons dull-black; calypters brown; wings dark brown, veins brown; legs brown, metatarsi pale-brown proximally ............................................................................................. L. badiceps MacAlpine

- Body highly polished golden-green / bronzy-blue coloured; frons dull or shiny-black; calypters white / cream; wings clear, veins yellow; legs brown / black, metatarsi yellow proximally .......................................................................... 3

3 Body golden-green; frons shiny-black (Fig. 47); phallus elongated G-shaped; (Western Australia)............................. ....................................................................................................................................................... L. fulgida McAlpine

- Body golden-green and bronzy-blue in colour; frons dull-black (Figs. 49–50); phallus simple C-shaped.................... .............................................................................. L. smaragdi Walker (syn. L. aurea Maquart & L. splendida Loew)