Observation: Photinus marginellus
Primary Observer:
Peggy Butler
Event Date:
2026-07-14
Status:
Unreviewed
Survey
Site Name:
Undisclosed
Province/State:
Pennsylvania
Event Date:
2026-07-14
Time of Day:
Night-Time
Start Time:
20:51
End Time:
21:35
Number of Observers:
1
Primary Observer:
Peggy Butler
Additional Observers:
na
target_species_genus:
photinus
target_species_species:
marginellus
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Grassland/Meadow - Meadow, open, grasses dominant
Habitat Type Notes:
lawn grasses, gardens, herbaceous plants and full grown trees (oak, maple, spruce and white pine) large rhododendrons.
Elevation (meters):
356
Area Searched (hectares):
<.5
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:
11-50
genus:
photinus
Species:
marginellus
Observation Notes:
tiny less than 1 centimeter. light colored elytra, pale pink and yellow pronotum with a black dot; aka "Little Gray"
Specimen Voucher Number:
Flash Behavior
First Flash Time:
20:51
Last Flash Time:
21:35
First Flash Temp (F):
72
Last Flash Temp (F):
72
Flashes in Pattern:
1
Flash Color:
Yellow
Flash Pattern Period:
3-4 seconds
Flash Duration:
1
Flash Interval:
3-4 seconds
Male Height Zone:
Moderate (3-8 ft)
Flash Location:
flying in the yard, garden and around rhododendron bushes next to the house and along the edges of the yard in the longer grasses
