Dekeyseria

Dekeyseria is a genus of suckermouth armored catfishes native to tropical South America.

==Species== There are currently four recognized species in this genus: Dekeyseria amazonica Rapp Py-Daniel, 1985 Dekeyseria niveata (La Monte, 1929) Dekeyseria picta (Kner, 1854) Dekeyseria scaphirhyncha (Kner, 1854) Synonyms Dekeyseria brachyura (Kner, 1854); valid as D. picta (Kner, 1854) Dekeyseria pulchra (Steindachner, 1915); valid as D. picta (Kner, 1854) ==Taxonomy== Dekeyseria was first described with D. amazonica as type species in 1985 by Lúcia Helena Rapp Py-Daniel. Later, Zonancistrus was described for D. brachyura, D. picta, and D. pulchra. However, this distinction was based on colouration, which is not a useful characteristic in diagnosing genera in loricariids; other genera such as Hypancistrus and Pseudolithoxus also exhibit a range of colouration patterns. Though Dekeyseria is not diagnosed by any unique characteristic, it is still a well-diagnosed genus.