The Electric Glass Knifefishes of the Eigenmannia trilineata species-group (Gymnotiformes: Sternopygidae): monophyly and description of seven new species

Author(s)

Wanderley Peixoto, Luiz Antonio ; Dutra, Guilherme Moreira ; Wosiacki, Wolmar Benjamin

• Document type: Journal article
• Source: ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY; v. 175, n. 2, p. 31-pg., 2015-10-01.

Abstract

Eigenmannia trilineata Lopez and Castello, 1966 (Sternopygidae) was described from the Rio de La Plata basin and subsequently cited from most South American river basins. Questions about the limits of this species raise the possibility of the occurrence of undescribed species misidentified as E. trilineata. Herein we propose the Eigenmannia trilineata species group for species that share the presence of the superior medial stripe on the flank. This group comprises: Eigenmannia antonioi sp. nov., from the Rio Anapu, Rio Amazonas basin; Eigenmannia desantanai sp. nov., from the Rio Cuiaba, Rio Paraguay basin; Eigenmannia guairaca sp. nov., from the Riacho Agua do O, upper Rio Parana basin; Eigenmannia matintapereira sp. nov., from the Rio Uneiuxi and Rio Urubaxi, Rio Negro basin; Eigenmannia microstoma (Reinhardt, 1852), from the Rio Sao Francisco basin; Eigenmannia muirapinima sp. nov., from small tributaries of the Rio Amazonas; Eigenmannia pavulagem sp. nov., from the tributaries of Rio Capim, Rio Guama basin; E. trilineata, from the lower Rio Parana basin and Rio de La Plata basin; Eigenmannia vicentespelaea Triques, 1996, from Sao Vicente I and II caves, Rio Tocantins basin; and Eigenmannia waiwai sp. nov., from the Rio Trombetas basin. These species can be distinguished from each other by unique sets of meristics, morphometrics, osteological and colour pattern features. (C) 2015 The Linnean Society of London. (AU)

• FAPESP's process: 13/09926-3 - Taxonomic and phylogenetic implications in facial myology compared in Gymnotiformes and Siluriformes
• Grantee: Luiz Antonio Wanderley Peixoto
• Support Opportunities: Scholarships in Brazil - Doctorate