temporary pools and ditches filled with water in clearings near the forest. A minority were in tree branches in secondary forest and primary forest. On Lago Agrio, frogs were recorded on tree branches felled in primary forest. Many of the frogs had been at heights of more than 20 m. In Yasuni National Park, Ron recorded it in open areas and Read (notes from the field) found choirs of Dendropsophus marmoratusin recently created temporary pools along roads in primary and secondary forest; It was especially common in large clearings within primary forest, such as oil well platforms, where water was present. Scinax ruber males also sing in their choirs. D. marmoratus is found at altitudes from 0 to 1000 m above sea level in the Amazon Basin in Brazil, Colombia, Ecuador, Peru, Bolivia; the south of Venezuela; the Guyanas. Gomes and Peixoto gave a record for Mato Grosso, Brazil and commented on the Brazilian component of the distribution. The first record in Bolivia is given by Köhler. Taxonomy and Evolutionary Relationships Part of the Dendropsophus marmoratus group. The group has eight species of which only Dendropsophus marmoratus is in Ecuador. The phylogeny presented by Wiens et al. supports the monophilia of the group but, its analysis and Faivovich analysis only included two species. Faivovich et al. suggested as a possible character shared by the group (synapomorphy) the presence of tuberculated skin on the margin of the lower lip. See synopsis of Bokermann. Additional Information Duellman described the tadpole and provided data on morphology, occurrence, natural history, vocalization and diet in Santa Cecilia, Ecuador. Natural history data of the Amazonian Cusco Peru, are presented by Duellman. Lescure and Marty provided a brief synopsis and photo in French Guiana. Beetles and orthoptera are the most abundant prey while Menéndez-Guerrero reports that the diet has a high frequency of ants and attributes this fact to its morphology characterized by short jaws and thin head compared to others hybrids Lee and Crump demonstrate selection of partners in relation to size since males in bridal embrace (amplexus) were on average larger than males who were not in amplexus. References Menéndez-Guerrero, P. 2001. Trophic ecology of the anura community of Yasuni National Park in the Ecuadorian Amazon. Bachelor thesis. Pontifical Catholic University of Ecuador. School of Biology Quito PDF Ron, SR 2001–2011. Amphibians of Yasuni National Park, Ecuadorian Amazon. [online]. see. 1.7 (2011). Zoology Museum, Pontifical