Redescription of the type species of Odontostilbe Cope, 1870 (Teleostei: Characidae: Cheirodontinae), and description of three new species from the Amazon basin

被引:19
作者
Buhrnheim, Cristina M.
Malabarba, Luiz R.
机构
[1] PUCRS, Museu Ciencias & Tecnol, BR-90619900 Porto Alegre, RS, Brazil
[2] Univ Fed Amazonas, ICB, Zool Lab, BR-69077000 Manaus, Amazonas, Brazil
[3] Univ Fed Rio Grande Sul, Dept Zool, BR-91501970 Porto Alegre, RS, Brazil
关键词
neotropical; neotype; systematics; Odontostilbe madeirae; Odontostilbe drepanon; Odontostilbe caquetae;
D O I
10.1590/S1679-62252006000200004
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
The widespread Neotropical cheirodontine Odontostilbe fugitiva is reviewed, and three new species of the genus are described from the Amazon basin. A neotype is designated for O. fugitiva, from the mouth of the rio Mazan, upper rio Amazonas basin, Peru. Three nominal species are herein considered as synonyms of O. fugitiva: O. madeirae, O. drepanon, and O. caquetae. The three new species are respectively O. ecuadorensis from the rio Napo basin, O. nareuda from the rio Madeira basin, and O. parecis from the rio Guapore basin (rio Madeira basin). Among other diagnostic characters, gill rakers are especially informative in distinguishing species. Description of gill raker denticulation is provided for the first time for species of the Cheirodontinae. Secondary sexually dimorphic characters are described for all species.
引用
收藏
页码:167 / 196
页数:30
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