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Observation: Unknown
Primary Observer:
Sam Colley
Event Date:
2025-07-15
Status:
Unverified
Survey
Site Name:
Ridgeville
Province/State:
Ohio
Event Date:
2025-07-15
Time of Day:
Night-Time
Start Time:
18:00
End Time:
21:00
Number of Observers:
2
Primary Observer:
Sam Colley
Additional Observers:
Adrien Legarth
Target Species Genus:
Target Species Species:
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Developed - Sub/urban areas; parks/gardens
Habitat Type Notes:
In grass that had been mowed roughly 2 weeks prior.
Elevation (meters):
725
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): 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:
Observation
Observation Type:
Flashing
Number Observed:
2-10
Genus:
unknown
Species:
unknown
Observation Notes:
No fireflies in the air, only a few flashing every so often in the grass.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
19:00
Last Flash Time:
21:00
First Flash Temp (F):
75
Last Flash Temp (F):
74
Flashes in Pattern:
2
Flash Color:
Yellow
Flash Pattern Period:
3-5 seconds between flashes
Flash Duration:
1 second
Flash Interval:
4-6 seconds
Male Height Zone:
Low (0-3 ft)
Flash Location:
In lawn grass that had not been mowed in roughly 2 weeks.
Male Flash Behavior:
Female Flash Behavior:
1 thought on “Observation: Unknown”
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Thank you for submitting this firefly observation! The notes about mowing are interesting and helpful. It is hard to know for sure without photos, but the yellow flash color, mowed grass habitat, timing between flashes in the flash pattern, and early evening display time all align with the big dipper firefly (Photinus pyralis). Because the flashes were from individuals perched in the grass, it is a bit harder to use the flash behavior for ID- as the flashes may have been from females rather than male courtship flash patterns, which are what we use for ID.