Callopistria floridensis

Callopistria floridensis, the Florida fern moth or Florida fern caterpillar, is a moth of the family Noctuidae. It is found in North America, south through the Caribbean, Mexico and Central America to Ecuador.
The wingspan is about. Adults are on wing year round in Florida and the tropics.
The larvae feed on various ferns, including Nephrolepis exaltata and Pteris vittata. It is an occasional pest in greenhouses. The larvae were recently discovered to have high levels of arsenic when feeding on P. vittata, and are the only known terrestrial animal to accumulate arsenic.