Key to Pseudonotoncus Species

The following key to Pseudonotoncus species has been modified from Shattuck & O'Reilly (2013).

• Petiole approximately square in dorsal view; in lateral view almost as long as high, the anterior face rounding gradually into the domed dorsal face. Dorsal surface of petiole with course longitudinal rugae => Pseudonotoncus eurysikos
• Petiole broader than long in dorsal view; in lateral view much higher than long, the anterior face separated from the flat dorsal face by a rounded angle. Dorsal surface of petiole smooth or with small foveate depressions => Pseudonotoncus hirsutus