Crossodactylus cyclospinus is only known from the type locality at Fazenda Duas Barras (15 53' S, 40 28' W, ca 800 masl), Municipality of Santa Maria do Salto, state of Minas Gerais, southeastern Brazil. The locality is in the mountain range called Serra do Cariri, which separates the states of Minas Gerais and Bahia, and the Basins of Jequitinhonha and Buranhém rivers (Nascimento et al., 2005).
Habitat and Ecology
Adults, juveniles, and tadpoles of Crossodactylus cyclospinus are diurnal and active during the wet season, in the months of October and January. The new species can be found in shallow rivulets in forested areas in Atlantic Rain Forest. Males vocalize from rocks or under plants in the midst of these rivulets. The frogs are vigilant, males tend to vocalize when they perceive the presence of an observer. When threatened, individuals hide in the leaf litter or dive into water (Nascimento et al., 2005). The vocal repertoire of the species is described in Nascimento et al. (2005).
No population status information is currently available for this species.
No major threats are known for this species.
No conservation measures are currently known for this species.
In the Crossodactylus gaudichaudii group according to the original publication. Crossodactylus cyclospinus is differentiated from other similar species by a combination of morphological and advertisement call features (Nascimento et al. 2005).
Ariadne Angulo 2008. Crossodactylus cyclospinus. In: IUCN 2014