This species is known from two localities; within the district of Vera Cruz, Municipality of Miguel Pereira, and the Serra da Concórdia, Municipality of Valença, state of Rio de Janeiro, Brazil at elevations between 680-845 m asl (Silva and Alves-Silva 2011). Other species of the Scinax perpusillus group are dependent upon tank bromeliads for reproduction, with observations of these bromeliads occurring extensively alongside frog observations within this bromeliad distribution. Thus, it is plausible that members of the Scinax perpusillus group may have a continuous distribution throughout the range of their favoured bromeliads. Surveys are needed to determine if the bromeliads and frog occur in between the two known localities.
Habitat and Ecology
It is known from hilly areas, among granitic outcrops, and has been observed particularly utilizing the bromeliad Alcantarea imperialis. Males of the species have been heard calling from this, and one other bromeliad species (Vriesea gigantea). Both eggs and tadpoles have been observed developing within Alcantarea imperialis and Alcantarea regina (Bromeliaceae), with adults breeding via amplexus and laying one egg at a time, with around eight eggs per clutch (Silva and Alves-Silva 2011). The Scinax perpusillus group to which this species belongs is known to have a strong association with bromeliads, and furthermore show a preference for bromeliads situated on granitic outcrops (Silva and Alves-Silva 2013, H.R. Silva pers. comm. August 2013), with S. insperatus being dependent on tank bromeliads and the water contained within to reproduce (H.R. Silva pers. comm. August 2013).
Little is known about the population status of this species; however, they are common within their known localities. The rocky outcrops on which the bromeliads occur have a patchy distribution, potentially restricting movement between populations. Further study is required to assess whether frogs within this group are able to utilize forest areas as stepping stones to move between patches of suitable habitat (H.R. Silva pers. comm. August 2013).
There is no information on major threats to this species; however, the known range of this frog appears fragmented, thus further investigation is required into its geographic distribution and the potential associated threats (Silva and Alves-Silva 2011).
No conservation actions are currently known for this species. More information is needed on this species' distribution, population status, natural history and threats.
Red List Status
Data Deficient (DD)
Listed as Data Deficient since it has only recently been described, and there is still very little information on its extent of occurrence, status and ecological requirements.
This species has been assigned to the Scinax catherinae clade (Cruz et al. 2011).
IUCN SSC Amphibian Specialist Group 2014. Scinax insperatus. The IUCN Red List of Threatened Species 2014: e.T48086134A48086143. http://dx.doi.org/10.2305/IUCN.UK.2014-1.RLTS.T48086134A48086143.en .Downloaded on 9 December 2018