Species · GBIF taxon 1162822
Pennsylvania Firefly
Photuris pennsylvanicaAlso known as Lightning Bug, Dot-Dash Firefly, Glowworm
Pennsylvania fireflies illuminate summer nights with a distinctive flash pattern consisting of a short dot followed by a longer dash. Females of this genus are famous for mimicking the mating signals of other firefly species to lure in and consume unsuspecting males. These predatory beetles play a vital role in controlling soft-bodied pests during their soil-dwelling larval stage.
BioluminescentNocturnalBeneficial Insect
Licensed referenceGould363 / CC BY-SA 4.0 · cc-by-sa
—observations
—countries
—peak records
VulnerableConservation statusIUCN Red List categoriesLCNTVUENCREWEXVulnerableRed List categories, explained →
Diet & prey
- Snails
- Slugs
- Other fireflies
Predators
- Spiders
- Bats
- Frogs
ThreatsLight pollution, habitat loss, and pesticide use
HabitatsMoist woodlands, meadows, marshes, and suburban gardens
Life span1 to 2 years
Size / weightNot available
Classification
- FamilyLampyridae
- SpeciesPhoturis pennsylvanica
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 a medium-sized beetle with a yellow and black pronotum featuring a reddish spot.
- Support conservation
- Observe their flashing displays from a distance and avoid using flashlights or phone screens near them.
Responsible observation
- Minimize light: Turn off outdoor lights to help them find mates without visual interference.
- Avoid pesticides: Maintain chemical-free lawns to protect the soil-dwelling larvae.
- Observe gently: Watch their flashing displays from a distance rather than capturing them.
Prey and Mimicry Target (c) Katja Schulz, some rights reserved (CC BY) · cc-by
Co-occurring Species Jacy Lucier / CC BY-SA 4.0 · cc-by-sa
Close Relative no rights reserved · cc0
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