Observation: Photinus ardens
Primary Observer:
Kat
Event Date:
2026-06-08
Status:
Unreviewed
Survey
Site Name:
Undisclosed
Province/State:
Maryland
Event Date:
2026-06-08
Time of Day:
Night-Time
Start Time:
22:25
End Time:
23:00
Number of Observers:
1
Primary Observer:
Kat
Additional Observers:
NA
target_species_genus:
unknown
target_species_species:
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Grassland/Meadow - Meadow, open, grasses dominant
Habitat Type Notes:
Large horse field I did not mow , surrounded by treeline
Elevation (meters):
171
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): 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:
Some garden and string lights in neighboring houses
Observation
Observation Type:
With Flash Data
Number Observed:
50+
genus:
photinus
Species:
ardens
Observation Notes:
Specimen Voucher Number:
Flash Behavior
First Flash Time:
22:33
Last Flash Time:
22:38
First Flash Temp (F):
64
Last Flash Temp (F):
64
Flashes in Pattern:
3
Flash Color:
Yellow
Flash Pattern Period:
3
Flash Duration:
1
Flash Interval:
.5
Male Height Zone:
Moderate (3-8 ft)
Flash Location:
Flashes are several feet off the ground. They often are above
Tall grass patches but some are within the tree branches.
Male Flash Behavior:
The group produces single flashes , then individuals flash 3x in quick succession. The group goes dark and then repeats this.
