The chilean species of Anthidiini are considered in this paper; the following species are keyed out: Notanthidium steloides (Spinola), Allanthidium (Allanthidium) bidentatum (Friese), Allanthidium (Allanthidium) rodolfi(Ruiz), Allanthidium (Anthidianum) bizonatum (Friese) Anthidium adriani Ruiz, Anthidium aymara n.sp., Anthidium chítense Spinola, Anthidium chubuti Cockerell, Anthidium colliguayanum Toro y Rojas, Anthidium decaspilum Moure, Anthidium deceptum Smith, Anthidium edwini Ruiz, Anthidium espinosai Ruiz, Anthidium falsificumMoure, Anthidium funereum Schletterer, Anthidium gayi Spinola, Anthidium kuscheli Moure, Anthidium penaiMoure, Anthidium peruvianum Schrottky. The following ñames are considered synonyms: A. anurospilum Mouren. sin. for A. espinosai Ruiz; A. gutierrezi Moure n. sin. for A. chubuti Cock. A new species, Anthidum aymara n.sp., from the north of Chile is described.