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| Profundulus adani Dominguez-Cisneros, Velázquez-Velázquez, McMahan & Matamoros, 2021 DOI: 10.1643/i2020156 |
Abstract
Profundulus adani, new species, is described from the upper reaches of the Papaloapan River in the Mexican state of Oaxaca. The uniqueness of this new species is supported by morphological and molecular evidence. A combination of color patterns and counts separate P. adani, new species, from its congeners. Profundulus adani, new species, is distinguished from all congeners by the absence of a humeral spot in individuals larger than 45 mm SL. It can further be distinguished from P. balsanus, P. chimalapensis, P. kreiseri, P. oaxacae, P. parentiae, and P. punctatus based on the absence of series of dark dots on the sides of the body. Profundulus adani, new species, shows a faded dark band that extends from the tip of the operculum to the end of the caudal peduncle; this band is absent in P. balsanus and P. parentiae. The new species is described using specimens collected in the upper reaches of the Papaloapan River in the Mexican state of Oaxaca; geographically this represents a significant range expansion and extends the Atlantic slope northernmost limit of the Profundulidae.
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| Known geographic distributions of species in the genus Profundulus. Localities of Profundulus adani depicted by yellow stars. Distributional data from UNICACH-MZ-P and complemented with data from global aggregators such as FishNet2 (accessed through the Fishnet2 Portal, www. fishnet2.net, 2020-12-10) and the Global Biodiversity Information Facility (GBIF, 2020). |
Profundulus adani, new species
Papaloapan Killifish
Distribution and habitat.—The known distribution of P. adani
is limited to the three localities reported here in the upper
reaches of the Papaloapan River in the Mexican state of
Oaxaca (Fig. 1). These three localities are small creeks of high
order at altitudes above 1500 masl, characterized by shallow
streams with boulders, rocks, and gravel dominating the
substrate (Fig. 5).
Etymology.—In recognition of his contributions to the study
and conservation of freshwater fishes in southern Mexico, this species is named after our friend, colleague, and Mexican
ichthyologist Adán E. Gómez González who tragically passed
away in January 2018.
Sara E. Dominguez-Cisneros, Ernesto Velázquez-Velázquez, Caleb D. McMahan, and Wilfredo A. Matamoros. 2021. A New Species of Killifish of the Genus Profundulus (Atherinomorpha: Profundulidae) from the Upper Reaches of the Papaloapan River in the Mexican State of Oaxaca. Ichthyology & Herpetology. 109(4), 949-957. DOI: 10.1643/i2020156
Profundulus adani especie nueva se describe de la cuenca alta del r´ıo Papaloapan en el estado mexicano de Oaxaca. La
distintividad de esta nueva especie esta´ respaldada por evidencia morfologica y molecular. Una combinaci ´ on de ´
patrones de coloracion y conteos separan a ´ P. adani especie nueva de sus congeneres. ´ Profundulus adani especie nueva se
distingue de todos sus congeneres por la ausencia de una mancha humeral en individuos mayores de 45 mm SL. Adema ´ ´s,
se puede distinguir de P. balsanus, P. chimalapensis, P. kreiseri, P. oaxacae, P. parentiae y P. punctatus por la ausencia de
l´ıneas de puntos oscuros en los lados del cuerpo. Profundulus adani especie nueva muestra una banda oscura descolorida
que se extiende desde la punta del operculo hasta el final del ped ´ unculo caudal; esta franja esta ´ ´ ausente en P. balsanus y
P. parentiae. La nueva especie se describe con espec´ımenes recolectados la cuenca alta del r´ıo Papaloapan en el estado
mexicano de Oaxaca; geogra´ficamente esto representa una expansion de rango significativa en la vertiente del ´
Atla´ntico para Profundulus.