Observation: Photinus pyralis
Primary Observer:
Ed Chapman
Event Date:
2026-07-13
Status:
Unreviewed
Survey
Site Name:
Rutgers commons near Seminary Place
Province/State:
New Jersey
Event Date:
2026-07-13
Time of Day:
Night-Time
Start Time:
20:20
End Time:
20:30
Number of Observers:
2
Primary Observer:
Ed Chapman
Additional Observers:
Norma Hoffman
target_species_genus:
photinus
target_species_species:
pyralis
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Developed - Sub/urban areas; parks/gardens
Habitat Type Notes:
Many shade trees. Mowed lawn.
Elevation (meters):
16 approx.
Area Searched (hectares):
1/2 acre
Artificial Light Sources
Vehicles: No
Street Lights: Yes
Buildings: Yes
Street Lights: Yes
Buildings: Yes
Artificial Light Types
Sky Glow (diffuse illumination in the sky): Yes
Light Trespass (light cast on surfaces beyond its intended target): Yes
Glare (bright light causing visual discomfort): No
Light Trespass (light cast on surfaces beyond its intended target): Yes
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:
Six or seven males seen and one female. Female flashing in wood chips around a tree root. One male was interested and landed.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
20:20
Last Flash Time:
20:20
First Flash Temp (F):
78
Last Flash Temp (F):
78
Flashes in Pattern:
1
Flash Color:
Yellow
Flash Pattern Period:
6
Flash Duration:
6
Flash Interval:
6
Male Height Zone:
Moderate (3-8 ft)
Flash Location:
Over mowed grass.
