Mayriella

Shattuck, Steven O., 2007, New species of Myrmicine ants from Western Australia (Hymenoptera: Formicidae), Zootaxa 1661, pp. 47-53 : 51

Key to Australian species of Mayriella (workers)

The following key, modified from Shattuck and Barnett (2007), can be used to identify the Australian species of Mayriella .

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 ..................................................................................................................................................... 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................................................................................................................................ 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).................................................................................................................................................. 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 ....... ....................................................................................................................................................... abstinens

Dorsum of petiole in lateral profile with an obtuse angle, the dorsal and posterior faces separated by an angle ................................................................................................................................................... occidua