The genus
Margarornis was introduced in 1853 by the German naturalist
Ludwig Reichenbach. The name combines the
Ancient Greek margaron meaning "pearl" with
ornis meaning "bird". The
type species was designated by
George Robert Gray in 1855 as
Sittasomus perlatus Lesson. This taxon is now considered to be a
subspecies of the
pearled treerunner (
Margarornis squamiger perlatus).
Species The genus contains four species: The
white-throated treerunner is placed in the
monotypic genus
Pygarrhichas. ==References==