Corydoras sp. C020 = Corydoras granti new species

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bekateen
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Corydoras sp. C020 = Corydoras granti new species

Post by bekateen »

C020 is described as Corydoras granti. Congratulations, @The.Dark.One (and to Luiz, Flavio and Marcelo)

L. F. C. Tencatt, F. C. T. Lima, & M. R. Britto. (2019). Deconstructing an octongeneric misconception reveals the true Corydoras arcuatus Elwin 1938 (Siluriformes: Callichthyidae) and a new Corydoras species from the Amazon basin. Journal of Fish Biology, doi: 10.1111/jfb.13980. First published: 10 April 2019.

https://doi.org/10.1111/jfb.13980
ABSTRACT
After 80 years of misidentifications, the analysis of the holotype of Corydoras arcuatus plus several non‐type specimens attributed to this species allowed its recognition and also revealed a new species, both sharing the following diagnostic features: a long, arched, continuous black stripe that runs parallel to the dorsal profile of the body and extends at least from the anterior margin of the first dorsolateral body plate to the posterior portion of caudal peduncle; absence of transverse black bars on caudal fin; infraorbital 2 in contact with sphenotic and compound pterotic. In addition to these features, C. arcuatus can be distinguished from congeners by having the posterior margin of both dorsal and pectoral spines with laminar serrations directed towards their origins. Also, it can be distinguished from the new species by presenting the following combination of features: ventral surface of trunk entirely or partially covered by relatively large and coalescent platelets; absence of spots or blotches on dorsal fin; posterior margin of both dorsal and pectoral spines with serrations directed towards their tips. Finally, an identification key to all arc‐striped species of Corydoras is provided.
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Re: Corydoras sp. C020 = Corydoras granti new species

Post by bekateen »

From the paper: Identification key to the arc-striped species of Corydoras:
  • 1. Posterior margin of pectoral spine with serrations directed towards its origin ... 2
    • 1‟. Posterior margin of pectoral spine with serrations directed towards its tip ... 4
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Re: Corydoras sp. C020 = Corydoras granti new species

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Re: Corydoras sp. C020 = Corydoras granti new species

Post by bekateen »

  • 3. Posterior margin of dorsal spine with serrations directed towards its origin ... Corydoras arcuatus
    • 3‟. Posterior margin of dorsal spine with serrations directed towards its tip ... Corydoras narcissus
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Re: Corydoras sp. C020 = Corydoras granti new species

Post by bekateen »

  • 4. Infraorbital 2 in contact with sphenotic and compound pterotic; anterior portion of infraorbital 1 with pointed laminar expansion ... Corydoras granti
    • 4". Infraorbital 2 in contact only with sphenotic; anterior portion of infraorbital 1 with rounded laminar expansion ... Corydoras urucu
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Re: Corydoras sp. C020 = Corydoras granti new species

Post by Mexnotex »

Congratulations to Steve and the authors, great news to us hobbist and the lucky ones that have met him. Super guy and very helpful.
Thank you for sharing Eric and we have a dark one amongst us.
We will have a drink in his honour
Martin Ortiz
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