Representatives of the glans penis in dorsal and ventral views of A. cursor from Espírito Santo (ACUES), Pernambuco (ACUPE), and Bahia (ACUBA) states; A. montensis from São Paulo state (AMOSP); hybrids from A. cursor paternal and A. montensis maternal parental (HYBACU×AMO) and hybrids from A. montensis paternal and A. cursor maternal parental (HYBAMO×ACU). The horizontal line delimits the beginning of the glans spined area A elongated shape, dorsal cleft as long as half of the length of the spined area, with a deep dorsal cleft B elongated shape, dorsal cleft smaller than half of the length of the spined area, with intermediate dorsal cleft depth C elongated shape, dorsal cleft as long as half the length of the spined area, with a shallow dorsal cleft D barrel-shaped, dorsal cleft longer than half of the length of the spined area, with a deep dorsal cleft (at arrow) E barrel-shaped, dorsal cleft longer than half of the length of the spined area, with a deep dorsal cleft (at arrow) F barrel-shaped, dorsal cleft longer than half of the length of the spined area, with deep dorsal cleft (at arrow) G elongated shape with an absent ventral cleft H barrel-shaped, with a deep ventral cleft and presence of small dark spots I barrel-shaped, with deep ventral cleft and presence of a large dark spot J elongated shape, with ventral cleft absent. Arrow points to the deep dorsal cleft. Scale bar: 1 mm.

 
 
  Part of: Campana L, Cruz LR, Paresque R, Fagundes V (2022) Penile shape discriminates two cryptic species of Akodon Meyen, 1833 (Mammalia, Rodentia, Cricetidae) from eastern Brazil. ZooKeys 1134: 1-22. https://doi.org/10.3897/zookeys.1134.89587