Butterfly populations in the US shrank by more than a fifth within the space of two decades, according to a new study.
A pressed small white butterfly, Pieris rapae, mounted by botanist Leonard Plukenet and incorporated into the Sir Hans Sloane Herbarium. Early nature enthusiasts relied heavily on persuading others to ...
The West Virginia White (Pieris virginiensis) - a woodland butterfly - has declined in abundance by more than 98% Some of the most affected species include the Florida white, Hermes copper ...