Observation: Photuris
Primary Observer:
Katie Hietala-Henschell
Event Date:
2026-06-22
Status:
Survey
Site Name:
Malan WPA - North Marsh
Province/State:
Michigan
Event Date:
2026-06-22
Time of Day:
Night-Time
Start Time:
21:50
End Time:
23:32
Number of Observers:
1
Primary Observer:
Katie Hietala-Henschell
Additional Observers:
NA
target_species_genus:
photinus
target_species_species:
aquilonius
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Open Freshwater Wetland - Wetland Bog, fen, freshwater marsh
Habitat Type Notes:
Cattail marsh with standing water, duckweed, and tall grasses.
Elevation (meters):
110
Area Searched (hectares):
0.25
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): No
Light Trespass (light cast on surfaces beyond its intended target): No
Glare (bright light causing visual discomfort): Yes
Light Trespass (light cast on surfaces beyond its intended target): No
Glare (bright light causing visual discomfort): Yes
Artificial Light Notes:
Nearby houses had bright exterior lights.
Observation
Observation Type:
With Flash Data
Number Observed:
11-50
genus:
photuris
Species:
unknown
Observation Notes:
10:54 - 13.5 mm.
11:22 - 12.5 mm.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
22:54
Last Flash Time:
23:22
First Flash Temp (F):
62
Last Flash Temp (F):
62
Flashes in Pattern:
1
Flash Color:
Green
Flash Pattern Period:
3.75
Flash Duration:
0.75
Flash Interval:
3
Male Height Zone:
Flash Location:
Present at the edge of marsh habitat where habitat transitions to field/meadow. Single flashers were abundant in meadow habitat.
Male Flash Behavior:
Single flashers.
10:54 - 1 second glow given every 2 seconds.
11:22 - Quick single 0.5 second flash every 4 seconds, this male was approaching a female.
Female Flash Behavior:
Female giving quick flash with longer delay in response but didn't get time interval.
