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Observation: Photinus pyralis
Primary Observer:
Kristina Ann Risvold
Event Date:
2025-07-02
Status:
Unreviewed
Survey
Site Name:
Home
Province/State:
Illinois
Event Date:
2025-07-02
Time of Day:
Day-Time
Start Time:
19:45
End Time:
21:01
Number of Observers:
1
Primary Observer:
Kristina Ann Risvold
Additional Observers:
NA
Target Species Genus:
Photinus
Target Species Species:
pyralis
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Developed - Sub/urban areas; parks/gardens
Habitat Type Notes:
Hosta, stone crop, perenials, bushes
Elevation (meters):
597
Area Searched (hectares):
.02
Artificial Light Sources
Street Lights: Yes
Artificial Light Types
Sky Glow (diffuse illumination in the sky): Yes
Artificial Light Notes:
Street light behind garage.
Observation
Observation Type:
Flashing
Number Observed:
11-50
Genus:
Photinus
Species:
pyralis
Observation Notes:
Observed male and female. Some males did not see the females light response.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
20:15
Last Flash Time:
20:53
First Flash Temp (F):
85
Last Flash Temp (F):
82
Flashes in Pattern:
1
Flash Color:
Yellow
Flash Pattern Period:
15
Flash Duration:
1
Flash Interval:
1
Male Height Zone:
Low (0-3 ft), Moderate (3-8 ft)
Flash Location:
Females on plants
Male Flash Behavior:
hovering around plants 1 to 5 feet off ground
Female Flash Behavior:
She flashed at him
