hair
gaster with sparse pubescence
gaster with sparse pubescence 
The first gastral tergite is marked by only sparse pubescence, giving it a shiny appearance. Used in Antkey to separate Brachymyrmex heeri and Brachymyrmex patagonicus from Brachymyrmex minutus and Brachymyrmex obscurior. Also used to separate all other Nylanderia from Nylanderia bourbonica, Nylanderia fulva and Nylanderia vaga.
gaster with dense pubescence
gaster with dense pubescence
The first gastral tergite is covered with dense pubescence, giving it a dull appearance. Used in Antkey to separate Brachymyrmex minutus and Brachymyrmex obscurior from Brachymyrmex heeri and Brachymyrmex patagonicus. Also used to separate Nylanderia bourbonica, Nylanderia fulva and Nylanderia vaga from all other Nylanderia species.
mesopleuron (Paratrechina bourbonica)
mesopleuron (Paratrechina bourbonica)
mesopleuron (Paratrechina bourbonica)
mesopleuron (Paratrechina vaga)
mesopleuron (Paratrechina vaga)
mesopleuron (Paratrechina vaga)
dense gastral pubescence
dense gastral pubescence
pubescence on first gastral segment dense (Brachymyrmex)
sparse gastral pubescence
sparse gastral pubescence
pubescence on first gastral segment sparse (Brachymyrmex)
mesopleuron with dense pubesence
mesopleuron with dense pubesence
dense pubescence covering mesopleura (Linepithema)
mesopleuron lacking dense pubesence
mesopleuron lacking dense pubesence
dense pubescence not covering mesopleura (Linepithema)