https://www.researchgate.net/publication...estern_Honduras

Article (PDF Available)  in ZooKeys 227(227):49-62 · October 2012 
DOI: 10.3897/zookeys.227.3151 · Source: PubMed

Profundulus kreiseri, a new species of Profundulidae (Teleostei, Cyprinodontiformes) from northwestern Honduras

Authors

Wilfredo A. Matamoros
25.92Universidad de Ciencias y Artes de Chiapas (UNICACH), Tuxtla Gutiérrez, Chiapas
Jacob F Schaefer
Carmen Liliana Hernández
3.29University of Southern Mississippi
Prosanta Chakrabarty
35.67Louisiana State University



Figure 2. Photographs of preserved specimens of A Profundulus kreiseri sp. n., USM 39022, holotype, 53.2 mm SL, Río Chamelecón, Honduras B Profundulus punctatus , UMMZ 194154, 47.0 mm SL, Rio Nahualete, Guatemala; and C Profundulus guatemalensis , UMMZ 190542, 43.7 mm SL, Río Maria Linda, Guatemala. The diagnostic characters of each species ( A–C ) are shown in D–F the white bar shows the ex- tent of squamation on the caudal fin D Profundulus kreiseri sp. n., USM 39022, holotype (note that scales cover less than half of the caudal fin, and there are no rows of dark spots on the caudal peduncle and caudal- fin base) E Profundulus punctatus , UMMZ 194154 (note that the entire anterior half of the caudal fin is covered with scales, and rows of dark dots occur on the caudal peduncle and caudal-fin base; and F Profundulus guatemalensis , UMMZ 190542 (note that scales extend beyond the midpoint of the caudal fin, and there are no rows of dark spots on the posterior portion of the caudal peduncle and caudal-fin base).

Abstract

A new species of Profundulus, Profundulus kreiseri (Cyprinodontiformes: Profundulidae), is described from the Chamelecón and Ulúa Rivers in the northwestern Honduran highlands. Based on a phylogenetic analysis using cytochrome b and the presence of synapomorphic characters (dark humeral spot, a scaled preorbital region and between 32-34 vertebrae), this new species is placed in the subgenus Profundulus, which also includes Profundulus (Profundulus) oaxacae, Profundulus (Profundulus) punctatus and Profundulus (Profundulus) guatemalensis. Profundulus kreiseri can be distinguished from other members of the subgenus Profundulus by having less than half of its caudal fin densely scaled. Profundulus kreiseri can further be differentiated from Profundulus (Profundulus) oaxacae and Profundulus (Profundulus) punctatus by the absence of rows of dark spots on its flanks. The new species can further be differentiated from Profundulus (Profundulus) guatemalensis by the presence of fewer caudal- and pectoral-fin rays. The new species is distinguished from congeners of the profundulid subgenus Tlaloc (viz., Profundulus (Tlaloc) hildebrandi, Profundulus (Tlaloc) labialis, Profundulus (Tlaloc) candalarius and Profundulus (Tlaloc) portillorum) by having a scaled preorbital region and a dark humeral spot. Profundulus kreiseri and Profundulus portillorum are the only two species of Profundulus that are endemic to the region south of the Motagua River drainage in southern Guatemala and northwestern Honduras.



Figure 3. Photographs of the habitat of P. kreiseri. A Type locality of P. kreiseri , 15.197667°N, 88.616°W. A small creek that drains directly into the Chamelecón River, near the new hydroelectric dam. Department of Santa Barbara, Municipality of Macuelizo B Small creek that drains into the main river. Department of Santa Barbara, 15.029520°N, 88.508°W.



Figure 4. Bayesian and maximum parsimony trees based on cytochrome b sequences. Number above each node represents Bayesian posterior probabilities. Number below each node represents nonparametric bootstrap support. Subgenus membership is shown with either light gray branches ( Tlaloc ) or dark gray branches ( Profundulus ). C = Chamelecón River, U = Ulúa River, N = Nacaome River.

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