Observation: Photuris
Primary Observer:
Katie Hietala-Henschell
Event Date:
2026-06-29
Status:
Survey
Site Name:
Tetrault State Forest Lookout Point
Province/State:
North Dakota
Event Date:
2026-06-29
Time of Day:
Night-Time
Start Time:
22:49
End Time:
23:20
Number of Observers:
1
Primary Observer:
Katie Hietala-Henschell
Additional Observers:
NA
target_species_genus:
photuris
target_species_species:
tasunkowitcoi
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Grassland/Meadow - Meadow, open, grasses dominant
Habitat Type Notes:
Grassy and herbaceous hillside bordered by oak patch on hilltop, some pine and mixed deciduous forest closer to the Pembina River.
Elevation (meters):
329
Area Searched (hectares):
0.22
Artificial Light Sources
Vehicles: No
Street Lights: Yes
Buildings: No
cell phone tower
Street Lights: Yes
Buildings: No
cell phone tower
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:
Observation
Observation Type:
With Flash Data
Number Observed:
2-10
genus:
photuris
Species:
unknown
Observation Notes:
No specimens collected. Flashing slowed down but continued at end of survey. Survey ended as wind, rain, and lightning began. Suspected to be Photuris tasunkowitcoi co-occurring with Pyractomena angulata.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
23:07
Last Flash Time:
23:20
First Flash Temp (F):
68
Last Flash Temp (F):
68
Flashes in Pattern:
1
Flash Color:
Green
Flash Pattern Period:
3.5
Flash Duration:
0.5
Flash Interval:
3
Male Height Zone:
Moderate (3-8 ft)
Flash Location:
Primarily flying over open field and grasses.
Male Flash Behavior:
11:07 pm - 0.5 second green dash every 3 seconds. Fast flying and covered far distance during dark interval.
11:10 pm - green glow-like flash, erratic flight appeared to be diving, bobbing, or swirling during flash. Inconsistent dark intervals.
