Key to Australian Mayriella Species

The following key to Australian Mayriella is based on Shattuck and Barnett (2007) and Shattuck (2007).

1

 * In dorsal view, anterior region of outer margin of postpetiole expanded laterally compared to posterior regions so its overall outline is trapezoidal => 2


 * In dorsal view, outer margins of postpetiole approximately the same width anteriorly as posteriorly so its overall outline is cylindrical or slightly barrel-shaped => 3

2

 * Dorsum of postpetiole with more than four erect hairs and dorsum of gaster with numerous erect hairs; dorsum of petiole in lateral profile uniformly convex and without distinct, separate dorsal and posterior faces => Mayriella ebbei


 * Dorsum of postpetiole with at most four erect hairs and dorsum of gaster generally lacking erect hairs (rarely hairs present); dorsum of petiole in lateral profile angular and with distinct, separate dorsal and posterior faces => Mayriella spinosior

3

 * Sculpturing in posterior section of antennal scrobe at most weakly developed and always indistinct; sculpturing on dorsal mesosoma consisting of small, widely spaced pits (separated by greater than their diameter) => Mayriella overbecki


 * Sculpturing in posterior section of antennal scrobe well developed and distinct; sculpturing on dorsal surface of mesosoma consisting of large, closely spaced pits (separated by less than their diameter) => 4

4

 * Dorsum of petiole in lateral profile strongly angular, the dorsal and posterior faces indistinguishable => Mayriella abstinens


 * Dorsum of petiole in lateral profile with an obtuse angle, the dorsal and posterior faces separated by an angle => Mayriella occidua