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C053 = Corydoras iiap, new species

Posted: 08 Jul 2024, 06:36
by bekateen
Tencatt, Luiz Fernando Caserta, Ruiz-Tafur, Morgan and Chuctaya, Junior. 2024. A new masked Corydoras (Siluriformes: Callichthyidae) from the Itaya and Nanay river basins, Peruvian Amazon. Neotropical Ichthyology, 22(02) [Accessed 7 July 2024], e240016. Available from: <https://doi.org/10.1590/1982-0224-2024-0016>. Epub 08 July 2024. ISSN 1982-0224. https://doi.org/10.1590/1982-0224-2024-0016.
Abstract
A new species of Corydoras is described from the Itaya and Nanay river basins, tributaries of the Río Amazonas in Peru. The new species can be distinguished from its congeners by the following features: (I) branch of the temporal sensory canal at sphenotic, which gives rise to the supraorbital canal, with two pores, (II) upper tooth plate of branchial arch with three series of teeth, (III) area at the corner of the mouth, ventral to the maxillary barbel, with a small, triangular fleshy flap, which may variably present a small prolongation at its posterior tip, forming a short barbel-like structure, (IV) a conspicuous dark brown or black patch transversally crossing the orbit, forming a mask-like blotch, (V) absence of a distinct color pattern along midline of flank, (VI) dorsolateral body plates only with small, irregular, rounded or vertically elongated dark brown or black blotches; ground color of plates typically light yellow or beige, (VII) absence of a relatively large, conspicuous dark blotch on anterior portion of dorsal fin, and (VIII) ossified portion of hypobranchial 2 ranging from moderately developed to well developed.
Keywords:
Corydoradinae; Corydoras sp. C53; Iquitos; Mimicry; Taxonomy
Resumen
Una nueva especie de Corydoras se describe de las cuencas de los Ríos Itaya y Nanay, tributarios del Río Amazonas en Perú. La nueva especie se puede distinguir de sus congéneres por las siguientes características: (I) rama del canal sensorial temporal en el esfenótico, que da origen al canal supraorbital, con dos poros, (II) placa dental superior del arco branquial con tres series de dientes, (III) área en la esquina de la boca, ventral a la barbilla maxilar, con una pequeña porción de tejido carnoso triangular, que puede presentar variaciones con una pequeña prolongación en su extremo posterior, formando una estructura semejante a una barbilla corta, (IV) una mancha conspicua de color marrón oscuro o negro que cruza transversalmente la órbita, formando una mancha con aspecto de máscara, (V) ausencia de un patrón de color distintivo a lo largo de la línea media del flanco, (VI) placas dorsolaterales del cuerpo solo con pequeñas manchas oscuras de color marrón oscuro o negro, irregulares, redondeadas o alargadas verticalmente; el color base de las placas típicamente es amarillo claro o beige, (VII) ausencia de una mancha oscura relativamente grande y conspicua en la porción anterior de la aleta dorsal, y (VIII) porción osificada del hipobranquial 2 que va desde moderadamente desarrollada hasta bien desarrollada.
Palabras clave:
Corydoradinae; Corydoras sp. C53; Iquitos; Mimetismo; Taxonomía

Re: C053 = Corydoras iiap, new species

Posted: 08 Jul 2024, 18:46
by Jools
Cool. How do we pronounce the new Cory? eye app? I am not sure given the etymology.

Cheers,

Jools
PS Is the DOI working OK in the above?

Re: C053 = Corydoras iiap, new species

Posted: 08 Jul 2024, 19:05
by bekateen
Jools wrote: 08 Jul 2024, 18:46 Cool. How do we pronounce the new Cory? eye app? I am not sure given the etymology.

Cheers,

Jools
PS Is the DOI working OK in the above?
Hi Jools,

When I was starting in Iquitos, the local university students pronounced the university's name ee-app or ee-yapp. In Spanish, the letter "i" is pronounced "ee."

With or without the "y," it sounds about the same. But considering that there is no "y" in the word, phonetically it's probably just "EE-app" (emphasis on ee, not on app).

Cheers, Eric