Se reportan nuevos registros y ampliaciones en el área de distribución Harpagus bidentatus, Glaucidium sanchezi, Attila spadiceus, Cyanolyca nana, Oreoscoptes montanus Peucedramus taeniatus. Estas seis especies aves fueron registradas bosque mesófilo montaña del estado Hidalgo, México. Dos estas (G. sanchezi C. nana) son restringida, lo que eleva a tres número restringida la zona. Esto enfatiza...

Pristimantis taeniatus (Boulenger 1912) es una rana terrestre relativamente común en Colombia y Panamá, recientemente registrada Costa Rica. Sin embargo, el estatus taxonómico la posición filogenética de las poblaciones Rica son actualmente desconocidos. Aquí nosotros reportamos P. dos nuevas localidades Rica, describimos su canto anuncio revisamos dentro rango distribución a partir secuencias ...

Traccatichthys tuberculum, new species, is herein described from the Jian-Jiang, a coastal river in Guangdong Province, South China. Photo by Bosco P.L. Chan. This new species differs from all other Chinese congeners (i.e., T. pulcher and T. zispi) in interorbital width, caudal-peduncle length, and pectoral-fin length. It, together with T. zispi, lacks the color patterns of the dorsal and anal ...

The Mato Grosso is a typical Atlantic Forest stream located on the East coast of Brazil, approximately 70 km from Rio de Janeiro city. From its source at about 800m a.s.l, the stream drains a 30km2 area of the Northwestern part of the municipality of Saquarema, state of Rio de Janeiro and flows into the Saquarema Lagoon system. We hypothesized that fish species occupy distinct mesohabitats, wit...

The evolution of alarm signals has puzzled evolutionary ecologists for decades. This is particularly true for alarm cues (‘Schreckstoff’) which are present in many fishes. They are passively released through injuries and signal the presence of a predator. Although the benefits for conspecific receivers are obvious (they can adjust their behavior to avoid predation), those for the senders are no...