Observation: Photinus pyralis
Primary Observer:
Mara Zimmerman
Event Date:
2026-08-12
Status:
Unreviewed
Survey
Site Name:
Kellys Run Site #2
Province/State:
Pennsylvania
Event Date:
2026-08-12
Time of Day:
Night-Time
Start Time:
20:10
End Time:
21:30
Number of Observers:
2
Primary Observer:
Mara Zimmerman
Additional Observers:
Lisa Zimmerman
target_species_genus:
unknown
target_species_species:
unknown
Location and Habitat
Location Accuracy (meters):
25-50
Habitat Type:
Grassland/Meadow - Meadow, open, grasses dominant
Habitat Type Notes:
Habitat was mostly grassland, but had several areas with denser shrub vegetation. Frogs were also heard throughout the survey.
Elevation (meters):
207.9
Area Searched (hectares):
2.867
Artificial Light Sources
Vehicles: No
Street Lights: No
Buildings: No
Street Lights: No
Buildings: No
Artificial Light Types
Sky Glow (diffuse illumination in the sky): No
Light Trespass (light cast on surfaces beyond its intended target): No
Glare (bright light causing visual discomfort): No
Light Trespass (light cast on surfaces beyond its intended target): No
Glare (bright light causing visual discomfort): No
Artificial Light Notes:
Observation
Observation Type:
With Flash Data
Number Observed:
2-10
genus:
photinus
Species:
pyralis
Observation Notes:
Specimen Voucher Number:
Flash Behavior
First Flash Time:
20:30
Last Flash Time:
21:00
First Flash Temp (F):
75.9
Last Flash Temp (F):
74.3
Flashes in Pattern:
1
Flash Color:
Yellow
Flash Pattern Period:
5.3
Flash Duration:
0.25
Flash Interval:
5.05
Male Height Zone:
Low (0-3 ft), Moderate (3-8 ft)
Flash Location:
J-shaped flash pattern. Males got higher in the air over time.
