Pachyglossa Hodgs., J. A. S. B., xii, p. 1009 (1844).
Type, Pachyglossa melanoxantha Hodgs.
The genus Pachyglossa is very close to Prionochilus but differs from it in its very long wing "with a minute first primary and comparatively short secondaries; the lower edge of the mandible is gently curved and the nostrils have the operculum partly covered by nasal hairs.
The sexes are dissimilar.