Steindachneridion parahybae (Steindachner 1877)

Ceríaco, Luis M. P., Santos, Bruna S., Semedo, Thiago B. F., Garcia, Lucas Canes & Moreira, Cristiano Rangel, 2023, The fish collection of José Mariano da Conceição Veloso (1742 - 1811) and the beginning of ichthyological research in Brazil, with a taxonomic description of the extant specimens, Zootaxa 5391 (1), pp. 1-85 : 30-32

Steindachneridion parahybae (Steindachner 1877)

Extant specimens: MCUC ZOO.0000012 ( Fig. 17a ), MCUC ZOO.0000041 ( Fig. 17b ), and MCUC ZOO.0000047 ( Fig. 17c ).

Classification on the specimen: “P. Abd. Silurus ” (see comments).

Common names on the specimen (Portuguese/Tupi): None.

Comments: This species was undescribed at the time Veloso prepared it. Among the examined specimens, only one (MCUC ZOO.0000047) lacks a classification on the herbarium sheet. The other two specimens bear classifications at the genus level, Silurus , which, during that period, encompassed most members of the order Siluriformes . One specimen (MCUC ZOO.0000041) displays the specific name “bagre ” inscribed in pencil, likely representing a subsequent addition. Silurus bagre (= Bagre bagre ) is a marine catfish and morphologically distinct from Steindachneridion parahybae . Within the Ajuda’s inventory ( Ferreira 1794), a total of 34 herborized specimens are listed under the genus Silurus , however, but we cannot attribute confidently this species to any name in the transference list to the University of Coimbra or the Lisbon Academy of Sciences. Furthermore, no definitive correlation between these specimens and any of the species of the genus Silurus in the Ichthyologia Fluminensis can be established. Steindachneridion parahybae is endemic from the rio Paraíba do Sul basin in southeastern Brazil ( Garavello 2005). Once an important commercial fish in the Paraíba do Sul basin river, it is considered today a threatened species (IUCN category Endangered; ICMBIO 2018).

Order Aulopiformes

Figures

FIGURE17.Steindachneridionparahybae (Steindachner 1877);a: MCUCZOO.0000012,460mmSL;b:MCUCZOO.0000041, 515 mm SL; c: MCUC ZOO.0000047, 405 mm SL. Photos by Luis M. P. Ceríaco.