Posts Tagged: sulfur butterfly

A Butterfly Invasion in Yolo, Solano and Sacramento Counties

If you think there's a butterfly invasion in the three-county area of Yolo, Solano and Sacramento, wait until you hear what Art Shapiro,...

The sulphur or alfalfa butterfly, (Colias eurytheme) is widespread now in Solano, Yolo and Sacramento counties and is the biggest invasion in 20 or 30 years, says Art Shapiro, distinguished professor of evolution and ecology at UC Davis. (Photo by Kathy Keatley Garvey)

The sulphur or alfalfa butterfly, (Colias eurytheme) is widespread now in Solano, Yolo and Sacramento counties and is the biggest invasion in 20 or 30 years, says Art Shapiro, distinguished professor of evolution and ecology at UC Davis. (Photo by Kathy Keatley Garvey)

San Francisco-based artist-lepidopterist Liam O'Brien depicts the alfalfa butterfly in a book to be published by Heyday Press in 2014. (Image courtesy of Liam O'Brien)

San Francisco-based artist-lepidopterist Liam O'Brien depicts the alfalfa butterfly in a book to be published by Heyday Press in 2014. (Image courtesy of Liam O'Brien)

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