The Florida intertidal firefly (micronaspis floridana) was proposed for listing in 2023 through a petition submitted by the Xerces Society.

The Florida intertidal firefly, also known by the common names mangrove firefly and fiddler crab firefly, is a habitat specialist found only in the mangroves and salt marshes of coastal Florida and the Bahamas. Belonging to a tropical branch of the firefly family tree, this species is the only member of its genus in the United States. Adult Florida intertidal fireflies have a distinctive appearance, with a mostly transparent head shield, large eyes, and wide pale borders on dark wing covers.  After nightfall, adults fly low over coastal vegetation and flash a greenish yellow light every 1.5 to 4 seconds.