FIGURE 1 A in the Afrotropical zoogeographic region: definition of species groups and systematic revision of the Pheidole pulchella group

FIGURE 1 A) Pheidole pulchella, full-face view of minor worker: the two lines show the lateral clypeal carinae on the sides of the clypeus (1). B) P. pulchella, lateral view of minor worker: illustrating posterior head margin with a weakly developed occipital carina (2), promesonotum with inconspicuous humeri (3), and second mesonotal process not reduced (4). C) P. pulchella, lateral view of major worker: illustrating second mesonotal process reduced to a small ridge anterior of the metanotal groove (5) and well-developed metapleural carina (6) situated above the metapleural gland scrobe (7). D) P. pulchella, in oblique fronto-dorsal (dorsocaudad) view (Will Ericson 2011): measurement of propodeal spine length (PSL), the bold line representing the measurement, bordered by the perpendicular line across the base of the spine.