Abstract
The Afrotropical species of Pachyanthidium Friese are revised. Sixteen species are recognized in four subgenera. One new species, Pachyanthidium (Trichanthidium) anoplos sp. n. is described; and one species, Pachyanthidium (Trichanthidium) cucullatum (Friese), is reinstated as a valid species. Four new synonymy are proposed: Pachyanthidium minutulum Pasteels =Pachyanthidium (Trichanthidiodes) semiluteum Pasteels syn. n.; Anthidium africanum Smith = P. (P.) bicolor (Lepeletier) syn. n.; Pachyanthidium cordatum swellemdamense Mavromoustakis = Pachyanthidium (P.) cordatum (Smith) syn. n. and Anthidium cordatum var. salamense Friese 1931 = Pachyanthidium (P.) salamense (Friese 1915) syn. n. Identification keys for the Afrotropical species are given.
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