Cyrtostylis huegelii, commonly known as the western common gnat orchid or midge orchid, is a species of orchid endemic to Western Australia. It usually has a single rounded leaf and a flowering spike with up to fifteen pale green and dull red flowers with a purplish, shelf-like labellum. Some authorities regard C. huegelii as a synonym of Cyrtostylis reniformis var. huegelii.
Cyrtostylis huegelii is a terrestrial, perennial, deciduous, herb with a single, almost round, ground-hugging leaf long and wide. Up to fifteen green and -coloured or dull red flowers long and about wide are borne on a flowering stem high. The sepal is erect and curves forward, long and about wide. The sepals are long, about wide and curve forwards or downwards. The petals are similar in size and shape to the lateral sepals and curve downwards. The labellum is purplish, shelf-like, tapered oblong, long and about wide with a pointed tip but lacking the serrations of the form found in eastern Australia. Flowering occurs from July to September.
Cyrtostylis huegelii was first formally described in 1846 by Stephan Endlicher from a specimen collected on Rottnest Island. The description was published in J.G.C. Lehmann's Plantae Preissianae. The specific epithet (huegelii) honours Charles von Hügel who collected the type specimen.
Some authorities regard C. huegelii as a synonym of C. reniformis var. huegelii.
The western gnat orchid grows in shrubland, woodland and forest in wetter parts of the state and on granite outcrops in more inland areas. It is found from Kalbarri to Esperance.