Genoplesium tectum, commonly known as the Cardwell midge orchid, is a small terrestrial orchid endemic to a small area in north-eastern Queensland.

Genoplesium tectum is a terrestrial, perennial, deciduous, herb with an underground tuber and a single thin leaf with a reddish base and 150–300 mm (6–10 in) long, fused to the flowering stem with the free part 10–20 mm (0.4–0.8 in) long.

The labellum is elliptic to egg-shaped with the narrower end towards the base, about 5 mm (0.2 in) long, 2.5 mm (0.1 in) wide with its edges densely covered with short, purplish hairs.

There is a dark reddish-black callus in the centre of the labellum and extending almost to its tip.

[2][3] Genoplesium tectum was first formally described in 1991 by David Jones and the description was published in Australian Orchid Research.