Observation: Photinus pyralis
Primary Observer:
Jeffrey calta
Event Date:
2025-09-14
Status:
Verified
Survey
Site Name:
Fairview Township
Province/State:
Pennsylvania
Event Date:
2025-09-14
Time of Day:
Night-Time
Start Time:
20:10
End Time:
20:33
Number of Observers:
1
Primary Observer:
Jeffrey calta
Additional Observers:
NA
target_species_genus:
unknown
target_species_species:
unknown
Location and Habitat
Location Accuracy (meters):
250-500
Habitat Type:
Grassland/Meadow - Meadow, open, grasses dominant
Habitat Type Notes:
Elevation (meters):
400
Area Searched (hectares):
3
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): Yes
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:
1
genus:
photinus
Species:
pyralis
Observation Notes:
No specimen captured
Specimen Voucher Number:
Flash Behavior
First Flash Time:
20:10
Last Flash Time:
20:30
First Flash Temp (F):
65
Last Flash Temp (F):
62
Flashes in Pattern:
1
Flash Color:
Yellow
Flash Pattern Period:
7
Flash Duration:
0.5
Flash Interval:
7
Male Height Zone:
Moderate (3-8 ft)
Flash Location:
In grass field
Male Flash Behavior:
J flash observed. Probably Photinus Pyralis.
Female Flash Behavior:
None
1 thought on “Observation: Photinus pyralis”
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Thanks for this observation! I feel comfortable verifying this as Photinus pyralis based on the flash pattern notes.