Rylands, A.B., Bampi, M.I., Chiarello, A.G., da Fonseca, G.A.B., Mendes, S.L. & Marcelino, M. (2003). 2006. IUCN Red List of Threatened Species. IUCN 2006. www.iucnredlist.org. Accesat 06 May 2006. Database entry includes justification for why this species is listed as data deficient