The workers are polymorphic, consisting of a minor (body length = 3.5–4.5 millimetres or 0.14–0.18 inches) and major caste (body length = 5–6 mm or 0.20–0.24 in) the major caste is relatively rare compared to the minor caste. The workers' heads are heart-shaped, broader than they are long and a "dark-reddish brown" colour. The antennae of both worker castes are made up of twelve segments and are a lighter colour than their heads, their mandibles have five teeth. The major workers superficially resemble species of Pseudolasius. In 1913, Auguste-Henri Forel described a new species, Camponotus (Myrmosphincta) antespectans, which was also moved to Euprenolepis by Emery. This is now considered a synonym of E. procera. Learn more about Mushroom Harvesting Ant