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Observation: Photuris
Primary Observer:
Brandie Dunn
Event Date:
2025-06-20
Status:
Unverified
Survey
Site Name:
BF
Province/State:
Illinois
Event Date:
2025-06-20
Time of Day:
Night-Time
Start Time:
20:35
End Time:
22:00
Number of Observers:
2
Primary Observer:
Brandie Dunn
Additional Observers:
Sylvia Dunn
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:
We observed activity in and around the fen, as well as in and along the neighboring forest edge.
Elevation (meters):
820
Area Searched (hectares):
.166
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:
Flashing
Number Observed:
2-10
Genus:
Photuris
Species:
unknown
Observation Notes:
14 mm, rapid-fire flasher, with an energetic display upon being caught. He was observed in the clearing, coming out of the woodland cover and approaching an open meadow that is surrounded by oak woodlands. There is a spring-fed stream meandering nearby.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
21:39
Last Flash Time:
22:00
First Flash Temp (F):
69
Last Flash Temp (F):
69
Flashes in Pattern:
>4
Flash Color:
Green
Flash Pattern Period:
5 -7 seconds
Flash Duration:
.2
Flash Interval:
.2
Male Height Zone:
High (over 8 ft)
Flash Location:
The flashes were observed in the open meadowlike area, facing north from the forest edge. They appeared 8 - 12 ft high.
Male Flash Behavior:
It would rapid fire, 6- 8 flashes and repeat it shortly thereafter.
