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Observation: Photinus pyralis
Primary Observer:
Debi Domby
Event Date:
2025-06-22
Status:
Unreviewed
Survey
Site Name:
Home
Province/State:
Michigan
Event Date:
2025-06-22
Time of Day:
Night-Time
Start Time:
21:15
End Time:
21:30
Number of Observers:
1
Primary Observer:
Debi Domby
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:
Mowed grass within 5 days prior of survey.
Elevation (meters):
176.784
Area Searched (hectares):
.000464515
Artificial Light Sources
Vehicles: No
Street Lights: Yes
Buildings: No
Street Lights: Yes
Buildings: No
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:
NA (just natural twilight ... moon set 3 hours before I did survey)
Observation
Observation Type:
Flashing
Number Observed:
50+
Genus:
Photinus
Species:
pyralis
Observation Notes:
From NOAA
Fair
Temp: 88°F/31°C
Humidity 59%
Wind Speed S 10 mph
Barometer 30.04 in (1016.6 mb)
Dewpoint 72°F (22°C)
Heat Index 95°F (35°C)
Three sample 10 sec observation: 55,60,70
Colors: Green/yellow, White (no orange)
Specimen Voucher Number:
Flash Behavior
First Flash Time:
21:15
Last Flash Time:
21:30
First Flash Temp (F):
88
Last Flash Temp (F):
88
Flashes in Pattern:
1
Flash Color:
Green
Flash Pattern Period:
2.75
Flash Duration:
2.75
Flash Interval:
2.75
Male Height Zone:
Moderate (3-8 ft)
Flash Location:
Southgate MI 48195
The answer for Male height, that's just an estimate, can't tell female from male but they all were within about 2 ft of the ground
