Biologists deposited caterpillars of the rare frosted elfin butterfly on its host plant, the sundial lupine, in north Florida. Photo from the Florida Fish and Wildlife Conservation Commission ...

Biologists waded through knee-high vegetation in Florida until they reached a spot where purple flowers grew in cone-like formations — then the team got out the glow-in-the dark caterpillars.

Get Instant Summarized Text (Gist) Caterpillars of the frosted elfin butterfly, a species now rare across much of its historic range, were released in Ichetucknee Springs State Park, Florida, to ...

Biologists deposited caterpillars of the rare frosted elfin butterfly on its host plant, the sundial lupine, in north Florida. Photo from the Florida Fish and Wildlife Conservation Commission ...