Used to distinguish the major worker of Pheidole fervens, Pheidole flavens, Pheidole moerens and Pheidole teneriffana from that of Pheidole obscurithorax. The last species lacks any depression capable of receiving any portion of the antennae.
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Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith