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Observation: Photuris
Primary Observer:
Brandie Dunn
Event Date:
2025-06-23
Status:
Unreviewed
Survey
Site Name:
Province/State:
Illinois
Event Date:
2025-06-23
Time of Day:
Night-Time
Start Time:
20:40
End Time:
22:00
Number of Observers:
2
Primary Observer:
Brandie Dunn
Additional Observers:
Caity Benkoski
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:
Jewel weed, skunk cabbage, elderberry, joe pye weed, cat-tails
Elevation (meters):
830
Area Searched (hectares):
.084
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:
13mm Appeared brighter, and seemingly more intentional in movement/direction. They were more difficult to catch, but we finally landed this one. He had a vigorous, agitated, rapid fire flashing after netting at forest edge.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
21:15
Last Flash Time:
22:00
First Flash Temp (F):
75
Last Flash Temp (F):
79.6
Flashes in Pattern:
1
Flash Color:
Yellow
Flash Pattern Period:
2
Flash Duration:
1
Flash Interval:
1
Male Height Zone:
Moderate (3-8 ft), High (over 8 ft)
Flash Location:
They were higher up, above our heads and out of reach, typically.
Male Flash Behavior:
Single, vibrant flash, every 1 - 2 seconds, while moving with intention, horizontally.
