With a total length of and a weight of , it is among the smaller
species of
hermits. The wing-coverts, mantle, nape and crown are dull iridescent green, the rump is pale rufous, the belly and flanks are buff, and the central underparts and throat are pale greyish brown, the latter with small dark streaks that often are faint and difficult to see. The face has a blackish "bandit-mask" border above by a whitish-buff
supercilium and below by whitish-buff malar. The
flight-feathers and tail are blackish; the latter tipped whitish to ochraceous depending on the
subspecies involved. As in most other hermits, it has a long, decurved bill. The basal half of the lower mandible is yellow, but otherwise the entire bill is black. The sexes are virtually identical. Juveniles apparently have the entire back pale rufous. The male has a
song which is high-pitched, squeaky, monotonous and easily overheard. Its exact structure varies over the species' range. The stripe-throated hermit has, together with several other small hermits, often been considered a subspecies of the
little hermit (
P. longuemareus), but morphological data suggest it may be closer to the
grey-chinned hermit (
P. griseolaris). At present most, if not all, major authorities accept the split (
SACC, the
Clements check list, the Howard & Moore check list, etc.). It has been suggested that the mainly Central American
taxon saturatus, which typically is considered a subspecies of
P. striigularis, may deserve species status, in which case it would become the
dusky hermit or '''Boucard's hermit'
(P. saturatus
). The taxon adolphi
is considered a junior synonym of saturatus'' by most authorities. ==Distribution and ecology ==