Bioluminescent-larvae
Guides
Lucidota atra
black firefly, woodland lucy
Lucidota atra is a diurnal firefly species in the beetle family Lampyridae, native to eastern North America. Unlike most fireflies, adults are active during daylight hours and lack functional light organs. Males locate females using pheromone-sensing antennae rather than bioluminescent signals. The species completes its life cycle in moist woodland habitats, with bioluminescent larvae preying on soft-bodied invertebrates.
Photinus cookii
Cook's firefly
Photinus cookii, known as Cook's firefly, is a small day-active firefly species in the beetle family Lampyridae. Adults measure 5–7 mm and lack functional bioluminescent lanterns, a distinctive departure from typical nocturnal fireflies. The species was described by John Wagener Green in 1956 and named in honor of Carl Cook, who collected the holotype in Kentucky. It is one of the few known non-flashing fireflies, believed to locate mates using pheromones rather than light signals.
Pyropyga minuta
Flower Elf
Pyropyga minuta is a tiny, day-active firefly species commonly known as the flower elf. Adults measure 3–7 mm and are solid black with a distinctive pale yellow pronotum marked by a dark central bar flanked by red. Unlike most fireflies, adults lack functional bioluminescent lanterns and do not flash; instead, they are believed to use pheromones for mate location. The species is widespread across North and Central America.