Redescription of Hypostomus johnii, a senior synonym of Hypostomus eptingi (Siluriformes: Loricariidae), Northeastern Brazil
Telton Pedro Anselmo Ramos, Claudio Henrique Zawadzki, Robson Tamar da Costa Ramos &Heraldo Antônio Britski
Changed in the database:
Hypostomus johnii, Hypostomus eptingi
Telton Pedro Anselmo Ramos, Claudio Henrique Zawadzki, Robson Tamar da Costa Ramos &Heraldo Antônio Britski
Published: Neotrop. ichthyol. vol.15 no.2 Maringá 2017 Epub June 26, 2017ABSTRACT
Hypostomus johnii (Steindachner) was described from the rio ParnaÃba basin in the state of Piauà and the rio São Francisco basin in the state of Bahia. Despite the good quality of the original description of H. johnii, it does not currently allow its distinction from congeners. Thus, H. johnii is redescribed based on the analysis of the types and several recently collected specimens. Recent collecting efforts of the rios ParnaÃba and São Francisco basins resulted in specimens only being found in the rio ParnaÃba basin. This raises doubts about whether H. johnii occurs in the rio São Francisco basin. The species is distinguished from its congeners by having a high number of teeth on the premaxilla and dentary (between 60-115); small to moderate-sized dark spots with a light background; absence of keels on flanks; and abdominal plates more evident on laterals. A lectotype of H. johnii is designated herein and H. eptingi is considered a junior synonym of H. johnii.
Changed in the database:
Hypostomus johnii, Hypostomus eptingi