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Cladistic Phylogeny of the North American Species Complexes of Pogonomyrmex (Hymenoptera: Formicidae)
By Stephen W. Taber
Annals of the Entomological Society of America, Volume 83, Pages 307–316, 1990
Cite: 1629492 with citation markup [cite:1629492]
Paper available here.

Abstract: Four species complexes have been recognized for >20 yr; one is monotypic, and the compositions of the others have changed because of new descriptions and synonymy. An early prediction concerning the proper placement of one species is confirmed, and with this proviso, the three modified complexes are shown to be monophyletic. Two undescribed species are placed, resolutions of problematic relationships are offered, a new species complex is defined, range extensions are recorded, and a scanning electron micrographic study of North American Pogonomyrmex is concluded.