A long-tailed hummingbird of the dry hills of north-central Peru. One female fed insects to nestlings, while another was building a nest beneath a mossy earth overhang.
One field record described a bird with green upperparts, white underparts, faint throat flecks, and a conspicuously long tail.
In February 1999, one female carried insects to nestlings at a nest beneath a moss-covered earth overhang near Cajamarca. The next day, another female was building a nest beneath a similar overhang at a different site near Sucre.
An extinction-risk assessment has not been added yet.