In a 2017 paper Lopes et al. provided convincing evidence that both the outcrop sabrewing and diamatinensis sensu stricto deserved species status.

Their central pair of tail feathers is bright bronze green, the next pair bright bronze green with a dark olive gray spot at the end, and the rest have bright bronze green bases, narrow dark olive gray bands near the tip, and white tips.

It is known from northeastern Goiás, southwestern Bahia, and northern Minas Gerais, and suspected to also be found in southeastern Tocantins and southern Piauí.

Though exact details of its habitat requirements have not been determined, it is known mostly from dry forests on limestone outcrops and calcareous soils derived from them.

[8] The outcrop sabrewing's foraging strategy and diet are poorly known, but it does take nectar from a variety of native and introduced plant species.

The outcrop sabrewing's vocalizations have not been put into words, but recordings are available in xeno-canto and the Cornell Lab of Ornithology's Macaulay Library.