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Observation: Photinus
Primary Observer:
alexis barbeau
Event Date:
2025-07-13
Status:
Unverified
Survey
Site Name:
Elkhart, Indiana
Province/State:
Indiana
Event Date:
2025-07-13
Time of Day:
Night-Time
Start Time:
20:20
End Time:
20:31
Number of Observers:
2
Primary Observer:
alexis barbeau
Additional Observers:
Joanelle Mulrain
Target Species Genus:
Target Species Species:
Location and Habitat
Location Accuracy (meters):
25-50
Habitat Type:
Grassland/Meadow - Meadow, open, grasses dominant
Habitat Type Notes:
Elevation (meters):
77
Area Searched (hectares):
grassy area next to hedges
Artificial Light Sources
Vehicles: Yes
Street Lights: Yes
Buildings: No
Street Lights: Yes
Buildings: No
Artificial Light Types
Sky Glow (diffuse illumination in the sky): No
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:
11-50
Genus:
Photinus
Species:
unknown
Observation Notes:
Specimen Voucher Number:
Flash Behavior
First Flash Time:
20:26
Last Flash Time:
20:30
First Flash Temp (F):
85
Last Flash Temp (F):
85
Flashes in Pattern:
1
Flash Color:
Unknown
Flash Pattern Period:
unknown
Flash Duration:
unknown
Flash Interval:
unknown
Male Height Zone:
Flash Location:
unknown
Male Flash Behavior:
Female Flash Behavior:
1 thought on “Observation: Photinus”
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Thank you for submitting this firefly observation! It is hard to know for sure without a close-up photo of the firefly, but based on the early-evening display time, the yellow color of the flash, and the low flash over mowed lawn, I think this firefly was most likely the big dipper firefly (Photinus pyralis).