Observation: Photuris
Primary Observer:
Brandie Dunn
Event Date:
2025-08-02
Status:
Verified
Survey
Site Name:
Undisclosed
Province/State:
Illinois
Event Date:
2025-08-02
Time of Day:
Night-Time
Start Time:
20:15
End Time:
22:00
Number of Observers:
4
Primary Observer:
Brandie Dunn
Additional Observers:
Tom Simpson, Michael Dunn, Ders Anderson
target_species_genus:
unknown
target_species_species:
unknown
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Open Freshwater Wetland - Wetland Bog, fen, freshwater marsh
Habitat Type Notes:
Jewelweed, Joe Pye weed, cattails, Bog/fen bordering oak woodland that increases in elevation as you enter woodland to north. We followed trail into woodland to the west towards opening to meadowy area, passing a seep along the way. The oaks and tall tree canopy block moonlight for the most part.
Elevation (meters):
820
Area Searched (hectares):
.16
Artificial Light Sources
Vehicles: Yes
Street Lights: No
Buildings: No
Street Lights: No
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:
Observation
Observation Type:
With Flash Data
Number Observed:
2-10
genus:
photuris
Species:
unknown
Observation Notes:
14mm. 2nd individual found flashing on ground.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
21:20
Last Flash Time:
22:00
First Flash Temp (F):
64
Last Flash Temp (F):
64
Flashes in Pattern:
1
Flash Color:
Green
Flash Pattern Period:
1
Flash Duration:
.5
Flash Interval:
1
Male Height Zone:
Low (0-3 ft)
Flash Location:
On ground.
Male Flash Behavior:
Female Flash Behavior:
1 thought on “Observation: Photuris”
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Nice documentation! Getting multiple observations is helpful for seeing how much variation there is between individuals that are likely the same species.