Rugae not reaching posterior head margin (Pheidole, major)

Licence: 
Creative Commons Licence
Description: 

Posterolateral lobes variously sculptured, but posterior head margin always free of rugoreticulum (major worker).

Creator: 
Eli Sarnat
Copyright Owner: 
Eli Sarnat
Copyright Statement: 
Eli Sarnat 2015
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith