Micro-computed tomography images of the skull showing in detail the diagnostic characters comparing Chironius bicarinatus (A, B) and C. gouveai (C, D): posterior portion of supratemporal (ST) straight (A) and slightly curved (C); ventral surface of the septomaxilla (SM) smooth (B) and with the presence of a conspicuous projection (D); anteroventral surface of prefrontal lacrimal foramen (PF) smooth (B) and with the presence of a conspicuous projection (D). Scale bar = 5 mm.

 
 
  Part of: Sudré V, Andrade-Junior A, Folly M, Azevedo JAR, Ávila RW, Curcio FF, Nunes PMS, Passos P (2024) Revision of the Chironius bicarinatus complex (Serpentes: Colubridae): Redefined species boundaries and description of a new species. Vertebrate Zoology 74: 85-120. https://doi.org/10.3897/vz.74.e106238