Species · GBIF taxon 1162761
Synchronous Firefly
Photinus carolinusAlso known as Smokies Synchronous Firefly, Synchronizing Firefly
Synchronous fireflies transform dark Appalachian forests into mesmerizing light shows as thousands of males flash in perfect unison to find mates. Females resting in the leaf litter respond with double-flashes, creating waves of light and darkness that ripple across the hillsides. This spectacular display occurs for only a few weeks each summer, relying on pristine, dark forest habitats to succeed.
NocturnalBioluminescentAppalachian
1 / 7—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Diet & prey
- Snails
- Slugs
- Earthworms
Predators
- Spiders
- Bats
- Assassin bugs
ThreatsLight pollution, habitat fragmentation, soil compaction from tourism, and pesticide use.
HabitatsMoist cove hardwood forests, riparian zones, and wooded valleys of the Appalachian Mountains.
Life span1 to 2 years
Size / weightNot available
Classification
- FamilyLampyridae
- SpeciesPhotinus carolinus
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Safe to observe at a normal distance.
- What to notice
- Look for groups of males flashing in perfect unison, producing 5 to 8 quick yellow-green flashes followed by several seconds of darkness.
- Support conservation
- Never capture these beetles, and use only red-filtered light when navigating their forest habitats.
Responsible observation
- Minimize Light: Cover flashlights with red cellophane and turn off phone screens to avoid disrupting their mating signals.
- Stay on Trails: Keep to designated paths to prevent crushing the flightless females and delicate larvae in the leaf litter.
- Patience is Key: Allow your eyes at least 15 minutes to adjust to the darkness before the display begins.
Predator Gould363 / CC BY-SA 4.0 · cc-by-sa
Frequent Companion Aggyrolemnoixytes / CC BY-SA 4.0 · cc-by-sa
Close Relative (c) Katja Schulz, some rights reserved (CC BY) · cc-by
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