Species · GBIF taxon 1162763
Common Eastern Firefly
Photinus pyralisAlso known as Big Dipper Firefly, Lightning Bug, Eastern Firefly
These beetles are famous for their twilight courtship displays, where males fly in a characteristic J-shaped path while emitting a bright yellow-green glow. Females wait in the grass below, flashing back to guide the males down for mating. While adults live only a few weeks to reproduce, their predatory larvae spend up to two years underground hunting soft-bodied invertebrates.
NocturnalBioluminescentBeetle
Licensed reference(c) Katja Schulz, some rights reserved (CC BY) · cc-by
- diet
- Larvae eat snails, slugs, and worms; adults feed on nectar, pollen, or do not feed at all.
- family
- Lampyridae
- threats
- Light pollution, habitat loss, and pesticide use.
- life Span
- 1 to 2 years
LC
Contains lucibufagins which are highly toxic to pets; do not allow lizards, birds, or cats to eat them.
Contains lucibufagins, self-defense steroid toxins that can cause rapid heart failure and death in reptiles, amphibians, and birds.
Never feed wild fireflies to pet reptiles or birds; wash hands after handling to remove bitter compounds.- Minimize artificial light: Turn off outdoor lights during summer evenings to help them find mates.
- Catch and release gently: Use a soft net or cup, keep them humid, and release them within an hour.
- Watch the flash pattern: Look for the characteristic J-shaped yellow light trail just above the grass.