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Philip S. Ward

My research is motivated by a fascination with insect natural history and the processes that have generated such a diverse array of forms.  My specialty is the systematics and evolutionary biology of ants (Hymenoptera: Formicidae).  These creatures, while small in size, are the world’s most prominent and species-rich group of social insects.  Numbering more than 12,000 described species—and perhaps as many undescribed taxa—ants have come to occupy almost all major terrestrial habitats, and they often assume keystone roles as predators, scavengers and herbivores.  The objectives of my research are to document and analyze the diversity of ants and to provide insight into the factors responsible for their evolutionary success.  As an ant systematist I engage in two different but complementary activities: (1) species-level taxonomy, and (2) phylogenetics.  The former is a neglected but vitally important area of systematics—without the ability to distinguish species many other enterprises in biology are seriously compromised.  Much of my work on species delimitation has focused on the ant subfamily Pseudomyrmecinae.  I am also interested in the natural history and distribution of California ant species.  My phylogenetic studies, based on morphology and (increasingly) DNA sequence data, have been directed at both the deep history of ants—unraveling the tree of life for the major lineages—and at relationships among species of pseudomyrmecine ants.

Research interests and publications

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