Epactionotus
From Wikipedia, the free encyclopedia
| Epactionotus | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Family: | Loricariidae |
| Subfamily: | Hypoptopomatinae |
| Genus: | Epactionotus Reis & Schaefer, 1998 |
| Type species | |
| Epactionotus bilineatus Reis & Schaefer, 1998[1] | |
| Species | |
|
5 species (see text) | |
Epactionotus is a genus of freshwater ray-finned fishes belonging to the family Loricariidae, the mailed catfishes, and the subfamily Hypoptopomatinae, the cascudinhos.[2] The fishes in this genus are known from southeastern Brazil and northern Argentina.
Epactionotus was first proposed as a genus in 1998 by Roberto E. Reis and Scott A. Schaefer, as including three species, with E. bilineatus designated as its type species.[1] Epactionotus is considered by some authorities to be part of the tribe Otothyrini within the subfamily Hypoptopomatini. Epactionotus is sister to a clade including Eurycheilichthys, Pseudotocinclus, Microlepidogaster, Schizolecis, Otothyris, and Pseudotothyris.[1] E. yasi was described in 2004,[3] with a fifth species described in 2020.[4]
Species
Epactionotus contains the following valid species:[5]
- Epactionotus advenus Delapieve, Carvalho and R. E. dos Reis, 2020
- Epactionotus bilineatus R. E. dos Reis & Schaefer, 1998
- Epactionotus gracilis R. E. dos Reis & Schaefer, 1998
- Epactionotus itaimbezinho R. E. dos Reis & Schaefer, 1998
Distribution
The first three described Epactionotus species are each endemic to a very limited geographic area along the Atlantic coast of southern Brazil.[1] E. bilineatus is endemic to the Rio Maquiné, the Rio Três Forquilhas and its tributaries in Rio Grande do Sul State, southern Brazil.[1] E. itaimbezinho is endemic to two localities in the upper reaches of the Rio Mampituba drainage, an isolated coastal stream situated along the border between Rio Grande do Sul and Santa Catarina States, southern Brazil.[1] E. gracilis is endemic to the Araranguá River drainage, an isolated coastal drainage in southern Santa Catarina State.[1] E. yasi is only known from the arroyo Lobo, a tributary of the Iguazu River in Argentina.[3]