slope of mesosoma gradual

The profile of the mesosoma slopes gently and gradually down as it approaches the posterior margin. There is not a sudden and steep decline from the posterior of promesonotum to the anterior of the propodeum. Used in Antkey to separate Cardiocondyla, Crematogaster, Myrmica, Tetramorium, Vollenhovia and Wasmannia from Pheidole.