Map of the Brazilian Amazonia region, showing the individual collection localities. 1 Acestrorhynchus falcirostris – Balbina reservoir on the Uatumã River, Amazonas state 2 Acestrorhynchus falcirostris and Acestrorhynchus microlepis – Catalão Lake, at the confluence of the Negro and Solimões rivers, Amazonas state 3 Acestrorhynchus falcatus, Acestrorhycnhus falcirostris, and Acestrorhynchus prope microlepis – Apeu Stream, basin of the Guamá River, Pará.

 
 
  Part of: Campos AS, Favarato RM, Feldberg E (2020) Interspecific cytogenetic relationships in three Acestrohynchus species (Acestrohynchinae, Characiformes) reveal the existence of possible cryptic species. Comparative Cytogenetics 14(1): 27-42. https://doi.org/10.3897/CompCytogen.v14i1.33483