Observation: Photinus pyralis
Primary Observer:
Hope Odenwalt
Event Date:
2026-06-21
Status:
Unreviewed
Survey
Site Name:
Mill Creek Falls Nature Preserve (lollipop)
Province/State:
Pennsylvania
Event Date:
2026-06-21
Time of Day:
Night-Time
Start Time:
19:57
End Time:
22:00
Number of Observers:
2
Primary Observer:
Hope Odenwalt
Additional Observers:
Justin Kaufhold
target_species_genus:
photinus
target_species_species:
marginellus
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Woodland/Forest - Trees dominant, and in the over-story
Habitat Type Notes:
Elevation (meters):
155.6
Area Searched (hectares):
4
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:
pyralis
Observation Notes:
Approx 1.5mm with antenna
Specimen Voucher Number:
Flash Behavior
First Flash Time:
20:24
Last Flash Time:
22:00
First Flash Temp (F):
72
Last Flash Temp (F):
70
Flashes in Pattern:
1
Flash Color:
Yellow
Flash Pattern Period:
8
Flash Duration:
1
Flash Interval:
7
Male Height Zone:
Moderate (3-8 ft)
Flash Location:
Tree line along hiking path and in hiking path.
