Observation: Photinus pyralis
Primary Observer:
MAP
Event Date:
2026-07-16
Status:
Unreviewed
Survey
Site Name:
Undisclosed
Province/State:
Massachusetts
Event Date:
2026-07-16
Time of Day:
Night-Time
Start Time:
20:15
End Time:
21:50
Number of Observers:
Primary Observer:
MAP
Additional Observers:
target_species_genus:
photinus
target_species_species:
marginellus
Location and Habitat
Location Accuracy (meters):
50-100
Habitat Type:
Developed - Sub/urban areas; parks/gardens
Habitat Type Notes:
Elevation (meters):
5
Area Searched (hectares):
Artificial Light Sources
Vehicles: Yes
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): Yes
Glare (bright light causing visual discomfort): No
Light Trespass (light cast on surfaces beyond its intended target): Yes
Glare (bright light causing visual discomfort): No
Artificial Light Notes:
Bikes and cyclists with lights running by
Observation
Observation Type:
With Flash Data
Number Observed:
11-50
genus:
photinus
Species:
pyralis
Observation Notes:
Specimen Voucher Number:
Flash Behavior
First Flash Time:
20:40
Last Flash Time:
21:35
First Flash Temp (F):
75
Last Flash Temp (F):
73
Flashes in Pattern:
1
Flash Color:
Yellow
Flash Pattern Period:
6
Flash Duration:
0.6
Flash Interval:
5.3
Male Height Zone:
Moderate (3-8 ft)
Flash Location:
above tall flowers
Male Flash Behavior:
J shaped arc
