Notice: Below is a list of 0 important links included on this page.
Please note that while screen readers have made significant strides, they may still lack full support for optimal web accessibility.
Observation: Photinus pyralis
Primary Observer:
Roger
Event Date:
2025-07-01
Status:
Unreviewed
Survey
Site Name:
Rocktown
Province/State:
Illinois
Event Date:
2025-07-01
Time of Day:
Night-Time
Start Time:
21:10
End Time:
21:20
Number of Observers:
1
Primary Observer:
Roger
Additional Observers:
NA
Target Species Genus:
Photinus
Target Species Species:
pyralis
Location and Habitat
Location Accuracy (meters):
>1000
Habitat Type:
Developed - Sub/urban areas; parks/gardens
Habitat Type Notes:
Developed city neighborhood, lots of trees and bushes and some wild, undeveloped areas
Elevation (meters):
623
Area Searched (hectares):
1
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:
Observation
Observation Type:
Flashing
Number Observed:
11-50
Genus:
Photinus
Species:
pyralis
Observation Notes:
This was a bit later than when I normally check rigth at sunset. It was darker but there were still a good number visible. In my first county I counted 23 and a bait later it was 25
Specimen Voucher Number:
Flash Behavior
First Flash Time:
21:15
Last Flash Time:
21:25
First Flash Temp (F):
78
Last Flash Temp (F):
78
Flashes in Pattern:
1
Flash Color:
Yellow
Flash Pattern Period:
1
Flash Duration:
1
Flash Interval:
3-10 seconds
Male Height Zone:
Flash Location:
most were flying, 3-6 feet above mowed grass, some in more wooded areas
Male Flash Behavior:
Random single flashes
