Stigmatodactylus antennatus is a species of flowering plant in the family Orchidaceae. It is endemic to the Arfak Mountains of West Papua, Indonesia.
Stigmatodactylus antennatus is a small terrestrial orchid with a tuberous habit and a single leaf. The inflorescence bears 3âÂÂ6 flowers with narrow, star-like sepals and petals.
The species is distinguished by its labellar callus bearing two long, slender, antenna-like appendages, along with a pair of triangular wings at the apex of the callus.
The species was formally described in 2026 by André Schuiteman, Reza Saputra, and Jimmy F. Wanma based on material collected in the Arfak Mountains.
This species is known only from the Arfak Mountains on the BirdâÂÂs Head Peninsula of West Papua, Indonesia, where it grows terrestrially in montane forest among moss and leaf litter at elevations of approximately .
It flowers from October to November.
The specific epithet antennatus refers to the distinctive antenna-like appendages on the labellar callus.