Common eastern firefly
Photinus pyralis
Beetle
The most familiar and widespread firefly across eastern North America, recognizable from the male's rising J-shaped flight and single yellow flash at dusk. Larvae are nocturnal predators that live for one to two years in moist soil and leaf litter, hunting soft-bodied invertebrates such as snails, slugs, and earthworms before pupating. Because every life stage depends on consistent soil moisture and undisturbed ground cover, the species responds directly to garden practices that retain leaf litter and native groundcover rather than clearing and tidying.
Conservation
Assessed as Least Concern on the IUCN Red List (2020) - still the most common firefly in North America. Documented threats to fireflies generally are light pollution, pesticide use, habitat loss, and soil disturbance; reducing outdoor lighting and leaving moist leaf litter undisturbed are the canonical garden-scale conservation actions.
Plan for this species
Location-fit plant set for Chicago, IL: host and specialist plants first, then nectar, fruit, seed, foliage, and shelter plants that still fit the current and mid-century climate read.
0 essential relationships / 6 supporting plants
Host/specialist links: 0
Forage/pollination links: 0
Shelter links: 6
Relationship roles: 1
American elderberry
Supporting / Shelter plants
Black willow
Supporting / Shelter plants
Bur oak
Supporting / Shelter plants
Common blue violet
Supporting / Shelter plants
Oregon white oak
Supporting / Shelter plants
Wild lupine
Supporting / Shelter plants
Plants in the catalog
Shelter plants · 8
Range
Widespread across the eastern half of North America, from southern Canada south through the central and eastern United States.
Sources & citations
Cite this page
Use this citation for the Plotwright wildlife record. Use the source cards below to explore the references that informed its taxonomy, range, conservation, host plants, foraging, and habitat.
Plotwright. (n.d.). Common eastern firefly (Photinus pyralis). Retrieved 2026, August 20, from https://plotwright.com/wildlife/common-eastern-firefly
Sources used for this record
This record is compiled from the sources below.
Wikipedia: Photinus pyralis
Species reference for common eastern firefly taxonomy, range, Least Concern status, larval life cycle, moist habitat, and J-shaped flash display.
GBIF: Photinus pyralis
GBIF backbone entry for Photinus pyralis, corroborating accepted species identity and eastern North American occurrence range.
iNaturalist: Photinus pyralis
iNaturalist research-grade taxon page for Photinus pyralis, corroborating species identity and observed range.
Xerces Society: Firefly Conservation
Xerces Society firefly conservation program page covering light pollution, pesticide, and habitat threats plus firefly-friendly lighting and undisturbed leaf-litter actions gardeners can take.