Helina subpubescens has a black body with lighter pruinescence, the latter being whitish-grey to yellowish-grey. The legs are tawny, excepting the darker tarsi. Antennal aristae are plumose, and the eyes haired. The haltere knobs are yellowish, and the wings are without cloudy areas over the crossveins. There are 4 pairs of postsutural dorsocentral bristles and no well developed presutural acrostichal bristles. Bodylength around 8mm.