Key to Australian Mayriella Species
The following key to Australian Mayriella is based on Shattuck and Barnett (2007)[1] and Shattuck (2007)[2].
1
- In dorsal view, anterior region of outer margin of postpetiole expanded laterally compared to posterior regions so its overall outline is trapezoidal => 2
(Leads to: Mayriella ebbei, Mayriella spinosior)
- 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
(Leads to: Mayriella abstinens, Mayriella occidua, Mayriella overbecki)
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
(Leads to: Mayriella abstinens, Mayriella occidua)
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