The Xerces Society is an environmental organization that focuses on invertebrates which are essential to biological diversity. The name is in honor of the extinct California butterfly, Xerces Blue.
The Xerces Society is an international non-profit organization that advocates for invertebrates and their habitats by working with scientists, land managers, educators, and citizens on conservation and education projects. Core programs focus on endangered species, native pollinators, and watershed health.
In November 2008 The Xerces Society launched an entirely redesigned website at www.xerces.org.