Journal article
Taxonomic assessment of Leptodoras (Siluriformes: Doradidae) with descriptions of three new species
Neotropical Ichthyology, v 3(4), pp 637-678
01 Dec 2005
Abstract
The genus Leptodoras Boulenger is a monophyletic assemblage of at least ten species distributed in large, predominantly lowland rivers throughout the northern half of cis-Andean South America. Leptodoras is diagnosed in Doradidae (thorny catfishes) by unique morphologies of the oral hood (upper labial extensions distinct with comparatively smooth ventral surface, lateral margins of extensions entire, weakly scalloped or fimbriate and without marginal papillae, and interlabial membranes of narrow or moderate width), first gill arch (enlarged accessory lamellae extend well onto medial face of gill filaments), and gas bladder (reduced size and modified cordiform shape, two distinct horn-like diverticula project from posterior walls of posterior chambers, and a pair of bulbous diverticula project from lateral walls of anterior chamber). Examination of specimens of Leptodoras from throughout its range verified the distinctiveness of the seven nominal species (L. acipenserinus, L. copei, L. hasemani, L. juruensis, L. linnelli, L. myersi and L. praelongus) and revealed three new species described herein (Leptodoras nelsoni, L. rogersae, and L. cataniai). A lectotype for L. hasemani is designated.
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Details
- Title
- Taxonomic assessment of Leptodoras (Siluriformes: Doradidae) with descriptions of three new species
- Creators
- Mark Henry Sabaj - Drexel University
- Publication Details
- Neotropical Ichthyology, v 3(4), pp 637-678
- Publisher
- Sociedade Brasileira de Ictiologia
- Resource Type
- Journal article
- Language
- Portuguese
- Academic Unit
- Academy of Natural Sciences of Drexel University
- Other Identifier
- 991019335595704721