Two new Lepthoplosternum

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Two new Lepthoplosternum

Post by Silurus »

Reis, RE & CC Kaefer, 2005. Two New Species of the Neotropical Catfish Genus Lepthoplosternum (Ostariophysi: Siluriformes: Callichthyidae). Copeia 2005: 724-731.

Abstract

Two new species of the callichthyid catfish genus Lepthoplosternum are described from the Amazon region. Lepthoplosternum stellatum is described from a tributary of Lago Tefé, Amazonas, Brazil, and it is diagnosed from other Lepthoplosternum species by a unique combination of characters: lower lip with pointed, crenulate, triangular fleshy projections lateral to the medial notch, caudal peduncle comparatively shallow (15.7â??18.9% SL), and dorsal fin usually with one unbranched and seven branched rays. Lepthoplosternum ucamara is described from the Pacaya-Samiria National Reserve in the lower Ucayali River, Loreto, Peru, and can be diagnosed from other Lepthoplosternum species by the following unique combination of characters: lower lip with short, rounded projections, caudal peduncle comparatively shallow (15.2â??17.7% SL), and dorsal fin with two unbranched and six branched rays. The distribution of Lepthoplosternum altamazonicum is extended to include the varzea floodplains of the Solimões River and its tributaries in Brazil. A key to species of Lepthoplosternum is also included.
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Post by bsfoord »

Does anyone know where I can obtain the full article?
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Post by MatsP »

If you don't mine paying for it, you can get it here:
http://www.bioone.org/perlserv/?request ... 05&issue=4
[Scroll down to "Reis"].

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Re: Two new Lepthoplosternum

Post by bekateen »

KEY TO THE SPECIES OF Lepthoplosternum:
  • 1a. Lower lip with pointed, crenulate, triangular fleshy projections, lateral to the medial notch (Fig. 1A, B)..... 2
    • 1b. Lower lip with rounded fleshy projections lateral to the medial notch (Fig. 1C)..... 3
    Fig. 1. Lower lip of Lepthoplosternum. (A) L. stellatum, MCP 30651, 38.0 mm SL. (B) L. altamazonicum, MCP 34559, 58.2 mm SL. (C) L. ucamara, MCP 34560, 42.9 mm SL.
    Fig. 1. Lower lip of Lepthoplosternum. (A) L. stellatum, MCP 30651, 38.0 mm SL. (B) L. altamazonicum, MCP 34559, 58.2 mm SL. (C) L. ucamara, MCP 34560, 42.9 mm SL.
  • 2a. Caudal peduncle comparatively shallow (15.7-18.9% SL); body and fins light, covered with many small, dark brown dots..... Lepthoplosternum stellatum, new species (Middle Rio Amazonas in Tefe area).
    • 2b. Caudal peduncle comparatively deep (19.3-23.8% SL); body and fins dark, with darker dots especially on fins..... Lepthoplosternum altamazonicum (Upper and middle Rio Amazonas)
  • 3a. Dorsal fin with one unbranched and seven branched rays; skin of belly and ventral portion of head with dark brown dots..... 4
    • 3b. Dorsal fin with two unbranched and six branched rays (rarely i+7 or ii+7 in L. tordilho); skin of belly and ventral portion of head with or without dots..... 5
  • 4a. Body comparatively wide (cleithral width 28.3-30.3% SL); maxillary barbel reaching lower series lateral plate 8-15; dorsal lateral series of plates 24-25..... Lepthoplosternum beni (Upper Rio Madeira basin)
    • 4b. Body comparatively narrow (cleithral width 25.9-28.0% SL); maxillary barbel reaching lower series lateral plate 16-17; dorsal lateral series of plates 25-26..... Lepthoplosternum pectorale (Rio Paraguay basin)
  • 5a. Caudal peduncle comparatively shallow (15.2-17.7% SL); ventral lateral series of plates 22-23; skin of belly and ventral portion of head with dark brown dots..... Lepthoplosternum ucamara, new species (Upper and middle Rio Amazonas)
    • 5b. Caudal peduncle comparatively deep (20.2-24.5% SL); ventral lateral series of plates 20-21; skin of belly and ventral portion of head with scattered chromatophores, not forming dots..... Lepthoplosternum tordilho (Laguna dos Patos system, southern Brazil)
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Re: Two new Lepthoplosternum

Post by Jools »

If you happened to acquire the 2005 Reis paper on this while posting the above, I see I don't have it. Would be good to get a copy as these are species we may need to ID in our aquariums,

cheers,

Jools
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Re: Two new Lepthoplosternum

Post by bekateen »

Jools wrote: Wed Nov 30, 2022 4:04 pm If you happened to acquire the 2005 Reis paper on this while posting the above, I see I don't have it. Would be good to get a copy as these are species we may need to ID in our aquariums,

cheers,

Jools
Just sent it to you, along with Reis' revision of Lepthoplosternum pectorale.

Cheers, Eric
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