Species · GBIF taxon 1162860
Blue Ghost Firefly
Phausis reticulataAlso known as Blue Ghost
Blue ghost fireflies cast an eerie, continuous blue-white glow that floats just inches above the dark forest floor during late spring. Unlike common flashing fireflies, the tiny males hover slowly through the understory for hours, searching for the wingless, flightless females glowing silently in the leaf litter. These delicate beetles rely on pristine, undisturbed forest floors and absolute darkness to carry out their brief, spectacular mating rituals.
NocturnalBioluminescentForest-dwelling
—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
- Harvestmen
- Frogs
ThreatsLight pollution, leaf litter compaction, habitat fragmentation, and pesticide runoff.
HabitatsMoist, undisturbed deciduous forests and deep mountain coves with thick leaf litter.
Life span1 to 2 years
Size / weightNot available
Classification
- FamilyLampyridae
- SpeciesPhausis reticulata
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
- Males emit a steady, eerie blue-white glow while hovering inches above the forest floor.
- Support conservation
- Stay strictly on marked trails, turn off all flashlights, and never attempt to catch or touch them.
Responsible observation
- Minimize Light: Use red-filtered flashlights or keep lights completely off to avoid disrupting their mating displays.
- Watch Your Step: Stay on designated trails to avoid crushing the flightless, glowing females in the leaf litter.
- Timing: Look for them during their brief late spring mating season, typically from late May to early June.
Predator Gould363 / CC BY-SA 4.0 · cc-by-sa
Close Relative (c) Katja Schulz, some rights reserved (CC BY) · cc-by
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