Observation: Photinus marginellus
Primary Observer:
Lisa Zimmerman
Event Date:
2026-07-01
Status:
Unreviewed
Survey
Site Name:
Kelly's Run Site 3
Province/State:
Pennsylvania
Event Date:
2026-07-01
Time of Day:
Night-Time
Start Time:
20:30
End Time:
21:40
Number of Observers:
2
Primary Observer:
Lisa Zimmerman
Additional Observers:
Mara Zimmerman
target_species_genus:
unknown
target_species_species:
unknown
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Woodland/Forest - Trees dominant, and in the over-story
Habitat Type Notes:
A grassland was at the edge of the forest section that was surveyed
Elevation (meters):
224.2
Area Searched (hectares):
1.433
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:
50+
genus:
photinus
Species:
marginellus
Observation Notes:
Species was found under the forest cover, near the ground and midway up the trees. The specimen had a body length of 0.8 cm.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
20:52
Last Flash Time:
21:40
First Flash Temp (F):
84.5
Last Flash Temp (F):
80.4
Flashes in Pattern:
1
Flash Color:
Yellow
Flash Pattern Period:
4.5
Flash Duration:
0.14
Flash Interval:
4.31
Male Height Zone:
Low (0-3 ft), Moderate (3-8 ft)
Flash Location:
Flashes occurred under tree cover, near the ground up until midway up the tree cover.
Male Flash Behavior:
Flash pattern consisted of a single, quick flash followed by a pause.
