Observation: Pyractomena angulata
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:
11-50
genus:
pyractomena
Species:
angulata
Observation Notes:
Approximately 30 individuals. ~14 mm. Flashing continued (but slowed down) after survey end time as rain started again.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
22:56
Last Flash Time:
23:20
First Flash Temp (F):
68
Last Flash Temp (F):
68
Flashes in Pattern:
1
Flash Color:
Orange
Flash Pattern Period:
2.75
Flash Duration:
0.75
Flash Interval:
2
Male Height Zone:
Moderate (3-8 ft)
Flash Location:
First flashes were low in the grass. Males flying and flashing near wood edge, within and near oak stand, and above open field.
Male Flash Behavior:
Multi-part orange flicker flash, lasting between 0.5-1 second and repeating every 2 seconds.
11:02 pm - 1 second long orange flicker flash every 2 seconds.
Female Flash Behavior:
Status Changes
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