Observation: Photinus marginellus
Primary Observer:
Mara Zimmerman
Event Date:
2026-06-11
Status:
Unreviewed
Survey
Site Name:
Undisclosed
Province/State:
Pennsylvania
Event Date:
2026-06-11
Time of Day:
Night-Time
Start Time:
20:50
End Time:
20:55
Number of Observers:
2
Primary Observer:
Mara Zimmerman
Additional Observers:
Lisa Zimmerman
target_species_genus:
unknown
target_species_species:
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Developed - Sub/urban areas; parks/gardens
Habitat Type Notes:
Tall fescue grass
Elevation (meters):
127
Area Searched (hectares):
Artificial Light Sources
Vehicles: No
Street Lights: No
Buildings: Yes
Street Lights: No
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): Yes
Light Trespass (light cast on surfaces beyond its intended target): Yes
Glare (bright light causing visual discomfort): Yes
Artificial Light Notes:
Observation
Observation Type:
With Flash Data
Number Observed:
2-10
genus:
photinus
Species:
marginellus
Observation Notes:
Specimen Voucher Number:
Flash Behavior
First Flash Time:
20:47
Last Flash Time:
20:54
First Flash Temp (F):
81
Last Flash Temp (F):
81
Flashes in Pattern:
1
Flash Color:
Yellow
Flash Pattern Period:
5
Flash Duration:
1
Flash Interval:
4
Male Height Zone:
Moderate (3-8 ft)
Flash Location:
Flashes occurred in the backyard, at heights near the grass and above our heads.
