''Dendropsophus berthalutzae'' is a species of

frog A frog is any member of a diverse and largely Carnivore, carnivorous group of short-bodied, tailless amphibians composing the order (biology), order Anura (ανοὐρά, literally ''without tail'' in Ancient Greek). The oldest fossil "proto-f ...

in the family Hylidae. It is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to southeastern

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

and occurs in the coastal lowlands and the Serra do Mar in Espírito Santo,

Minas Gerais Minas Gerais () is a state in Southeastern Brazil. It ranks as the second most populous, the third by gross domestic product (GDP), and the fourth largest by area in the country. The state's capital and largest city, Belo Horizonte (literally ...

, Rio de Janeiro, São Paulo, and eastern Paraná states. It is named in honor of

Bertha Lutz Bertha Maria Júlia Lutz (August 2, 1894 – September 16, 1976) was a Brazilian zoologist, politician, and diplomat. Lutz became a leading figure in both the Americas, Pan American feminism, feminist movement and human rights movement. She was i ...

, a Brazilian zoologist and feminist. Common name Bertha's treefrog has been coined for it.

Description

Adult males measure and adult females in

snout–vent length Snout–vent length (SVL) is a morphometric measurement taken in herpetology from the tip of the snout to the most posterior opening of the cloacal slit (vent)."direct line distance from tip of snout to posterior margin of vent" It is the most c ...

. Despite its small size, it has a robust appearance. The head is rather wide, and wider than the body. The snout is blunt in dorsal view. The eyes are prominent whereas the tympanum is small. The fingers are wide relatively large discs and some basal webbing. The toes are three-quarters webbed. The dorsal coloration ranges from pale, almost straw color to tawny. There is an interorbital and an X-shaped pattern on the back. Sprinkling with dark chromatophores may be present, obscuring the pattern. Males have a large vocal sac. The male advertisement call consists of one or two notes, with 2–12 pulses each. The dominant frequency is 4315–4765 Hz. The call is different from the calls of related species.

Habitat and conservation

''Dendropsophus berthalutzae'' is found in the coastal lowlands and the Serra do Mar at elevations up to

above sea level Height above mean sea level is a measure of the vertical distance (height, elevation or altitude) of a location in reference to a historic mean sea level taken as a vertical datum. In geodesy, it is formalized as ''orthometric heights''. The comb ...

. It occurs low in vegetation in secondary forest, often near swamps, and in open areas, such as grassland. The eggs are hung in the vegetation above temporary still water; the tadpoles fall to the water and develop there. ''Dendropsophus berthalutzae'' is a very common species. It is adaptable, but could be locally impacted by agriculture and wood plantations.

References

{{Taxonbar, from=Q2699316 berthalutzae Endemic fauna of Brazil Amphibians of Brazil Amphibians described in 1962 Taxonomy articles created by Polbot