propodeum shape

The propodeum is not angulate and lacks a distinct dorsal and posterior face. Used in Antkey to separate Camponotus variegatus, Camponotus atriceps, and Camponotus sexguttatus from Camponotus rectangularis.

The propodeum is angular, with flat to weakly convex dorsal and posterior faces. Used in Antkey to separate Linepithema humile from Linepithema iniquum.

The dorsal face of the propodeum is either longer or approximately equal to the posterior face, but never distinctly shorter. Used in Antkey to separate Linepithema and Iridomyrmex from Tapinoma and Technomyrmex .

The propodeum may be strongly convex, but it never forms a posteriorly projecting protrusion, and the declivity is convex to flat, but never concave. Used in Antkey to separate various species of dolichoderines and formicines from the Ochetellus glaber complex.

propodeum shape (Linepithema humile)