Key to species of Amblysellus from Mexico

1 Aedeagus evenly curved dorsad............................................................. raygozai sp. nov.

- Aedeagus nearly straight or abruptly bent dorsad in distal half.................................................. 2

2 Crown with a slender black transverse stripe near anterior margin. Style apophysis expanded and truncate apically..................................................................................... copulus DeLong & Hamilton

- Crown with a broad band or spots on anterior margin. Style apophysis conical or angulate apically..................... 3

3 Crown without transverse band, only spots present on anterior margin. Style apophysis twisted or angulate.............. 4

- Crown with a broad irregular black band along anterior margin. Style with apex of apophysis broad, pointed, not twisted.............................................................................. macularis DeLong & Hamilton

4 Crown with circular spots. Style apophysis twisted. Aedeagal shaft broad in lateral view.... necopinus DeLong & Hamilton

- Crown with irregular spots. Style apophysis not twisted, angulate. Aedeagal shaft slender with preapical constriction in lateral view........................................................................ dedecus DeLong & Hamilton