Anthidium gayi is a species of bee in the family Megachilidae, the leaf-cutter, carder, or mason bees.Griswold, T., and J. S. Ascher., 2005, Checklist of Apoidea of North America (including Central America and the Caribbean)
Distribution Argentina Chile
Synonyms Synonyms for this species include: Anthidium coloratum Smith, 1854 Anthidium spinolae Gribodo, 1894
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