135 mm maximum SL), in number of caudalfin rays (10 vs. fasciolaris, although possessing a prominent, ocellated caudal spot, differs noticeably in general body shape and size (at least 162 mm SL vs. However, compared to our specimens, Symphurus leei differs in general body shape, in lacking the ocellated caudal spot, and in presenting a higher number of dorsal and analfin rays (93≡04 and 78≨8 vs. leei (predominant 1≤≣≢≢ ID pattern 69% and 62% and variant ID pattern 1≣≤≢≢, 6% and 7%, respectively number of specimens 39 and 198, respectively Munroe, 1992). The 1≤≣≢≢ ID arrangement, typically present in our specimens, only occurs in but 2 eastern Pacific Symphurus species, S. In view of the fact that Munroe (1992) and Munroe and Robertson (2005) stated that the ID pattern serves as an important diagnostic character for the identification of symphurine tonguefishes it is essential to address the discrepancy mentioned above. The predominant ID arrangement in our specimens is 1≤≣≢≢ (present in 9 out of 11 Fig. ocellaris also coincide in measurements and counts, except, however, for the interdigitation (ID) pattern of proximal dorsalfin pterygiophores and neural spines ( Tables 1 and 2). ocellaris from Panama provided by Munroe and Robertson (2005) only the pupillary operculum is somewhat less conspicuous in our specimens. The external morphology of our symphurine tonguefishes collected from off the coasts of Colima and Chiapas corresponds to that of the type material of S. The common English and Spanish name used here, ringtail tonguefish and lengua cola ocelada, are taken from Robertson and Allen (2006). (1985) Centro de Investigación en Alimentación y Desarrollo, A. Institutional abbreviations are as listed in Leviton et al. Methods for counts and measurements and general terminology are according to Munroe (1998). 1A≭), after having examined all the Symphurus specimens in our institutional fish collection (CIAD) obtained from many cruises carried out along the eastern Pacific coast of Mexico, including the Gulf of California. Only recently, however, could the specimens be classified as S. ocellaris were obtained during an extensive collecting effort for demersal fishes on the continental shelf of the Gulf of Tehuantepec in 1991≡992 and 2 additional specimens were caught in the coastal waters off the state of Colima in 1996. Recently, a new species of tonguefish, Symphurus ocellaris Munroe and Robertson, 2005, was described from the Pacific coast of Panama, based on 2 specimens, increasing the number of eastern Pacific species of Symphurus to 18 (Munroe et al., 1995 Munroe and Robertson, 2005).
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Munroe and collaborators published a series of descriptions of new species belonging to the genus Symphurus, mostly based on the dissertation of Mahadeva (1956): Munroe and Mahadeva (1989), Mahadeva and Munroe (1990), Munroe (1990), Munroe and Nizinski (1990), and Munroe et al. The symphurine tonguefishes of the eastern Pacific were poorly known and difficult to identify until around 1990, when T. Palabras clave: ampliación, ámbito geográfico, Pacífico oriental, Panamá, México. Se extiende el ámbito de distribución norteña de la especie en 11.5 grados de latitud (aproximadamente 3 400 km de línea de costa del Pacífico oriental), desde Panamá hasta Colima, México. El presente descubrimiento constituye el primer registro para México y un segundo reporte conocido de la especie. Hasta el momento, la especie sólo era conocida a partir de 2 ejemplares tipo recolectados frente a la costa pacífica de Panamá. Se recolectaron 11 individuos de la especie lengua cola ocelada, Symphurus ocellaris Munroe y Robertson, 2005, frente a las costas de Chiapas y Colima, México. Key words: range extension, geographical distribution, eastern Pacific, Panama, Mexico. ocellaris is now extended by 11.5 degrees latitude or about 3 400 km of the eastern Pacific coastline, from Panama to Colima, Mexico. Our finding constitutes the first record of the species in Mexico and the second known occurrence of the species. Previously, this species was known only from the 2 type specimens collected off the Pacific coast of Panama. Sábalo≬erritos s/n "Estero del Yugo" Apartado postal 711, 82010 Mazatlán, Sinaloa, 26 agosto 2009Įleven specimens of the ringtail tonguefish, Symphurus ocellaris Munroe and Robertson, 2005, were obtained from off the coasts of Chiapas and Colima, Mexico.
Unidad Mazatlán en Acuicultura y Manejo Ambiental, Av. PlascenciaGonzálezĬentro de Investigación en Alimentación y Desarrollo, A. van der Heiden*, Marcela RuizGuerrero and Héctor G. La lengua cola ocelada, Symphurus ocellaris, una nueva adición a la ictiofauna de México (Cynoglossidae, Pleuronectiformes).Īlbert M. The ringtail tonguefish, Symphurus ocellaris, a new addition to the marine fish fauna of Mexico (Cynoglossidae, Pleuronectiformes).
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