It has two dark green leaves and a single small, green or pinkish flower with a shiny, dark reddish black, insect-like callus surrounded by reddish club-shaped calli covering most of the upper surface of the labellum.

The callus and associated glands occupy most of the upper surface of the labellum.

[2][3] Chiloglottis trullata was first formally described in 1991 by David Jones from a specimen collected in the Blackdown Tableland National Park and the description was published in Australian Orchid Research.

[4] The specific epithet (trullata) is a Latin word meaning "trowel",[5] referring to the shape of the labellum.

[3] The triangular ant orchid grows near sandstone boulder in tall forest on the Blackdown Tableland.