Revalidation and redescription of Moenkhausia madeirae Fowler from the rio Madeira basin in Brazil and Bolivia (Characiformes: Characidae)

Author(s)

Lima, Flavio C. T. ; Faria, Tiago C. ; Ohara, Willian M. ; Barros, Bruno S. F.

• Document type: Journal article
• Source: PROCEEDINGS OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA; v. 167, n. 1, p. 12-pg., 2022-03-01.

Abstract

Based on the examination of type and recently collected specimens, Moenkhausia lepidura madeirae Fowler is resurrected from the synonymy of M. intermedia and redescribed as a valid species. Moenkhausia madeirae can be diagnosed from all congeners by the following combination of characters: presence of two symmetrical dark blotches on caudal fin (one on each lobe), a conspicuous humeral blotch, 18-22 branched anal-fin rays, and mature males with two (rarely three) well-developed hooks on the last simple and first branched anal-fin rays, respectively. The species occurs in the middle and upper rio Madeira basin in Brazil and Bolivia. Comparisons are made with the other species of Moenkhausia presenting symmetrical dark blotches on the caudal-fin lobes, i.e., M. barbouri, M. bonita, M. dichroura, and M. intermedia. (AU)

• FAPESP's process: 13/20936-0 - Systematics of tetras (genera Hemigrammus, Hyphessobrycon, Thayeria, Parapristella e Bryconella), with emphasis on the species from northern cis-Andean South America
• Grantee: Flávio César Thadeo de Lima
• Support Opportunities: Scholarships in Brazil - Young Researchers
• FAPESP's process: 13/22473-8 - Endemism and biogeographic analysis of fishes from Madeira River basin
• Grantee: Willian Massaharu Ohara
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 11/51532-7 - Systematics of tetras (genera Hemigrammus, Hyphessobrycon, Thayeria, Parapristella, and Bryconella), with emphasis on the species from the northern cis-andean South America.
• Grantee: Flávio César Thadeo de Lima
• Support Opportunities: Research Grants - Young Investigators Grants
• FAPESP's process: 16/19075-9 - Diversity and evolution of Gymnotiformes (Teleostei, Ostariophysi)
• Grantee: Naercio Aquino Menezes
• Support Opportunities: Research Projects - Thematic Grants