Observation: Photinus pyralis
Primary Observer:
Ellie Shultz
Event Date:
2026-08-10
Status:
Verified
Survey
Site Name:
Koeneman Lake
Province/State:
Indiana
Event Date:
2026-08-10
Time of Day:
Night-Time
Start Time:
20:48
End Time:
21:27
Number of Observers:
1
Primary Observer:
Ellie Shultz
Additional Observers:
NA
target_species_genus:
photinus
target_species_species:
pyralis
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Woodland/Forest - Trees dominant, and in the over-story
Habitat Type Notes:
Forest at the corner of a small lake.
Elevation (meters):
326
Area Searched (hectares):
1
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:
pyralis
Observation Notes:
I would say I saw just barely over 50 fireflies of this species. Their numbers weren't as prolific as I'd seen at 2 nearby sites prior.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
20:50
Last Flash Time:
21:30
First Flash Temp (F):
78
Last Flash Temp (F):
76
Flashes in Pattern:
1
Flash Color:
Yellow
Flash Pattern Period:
5.6
Flash Duration:
.6
Flash Interval:
5
Male Height Zone:
Low (0-3 ft), Moderate (3-8 ft)
Flash Location:
They started low and then got higher as time progressed.
