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Observation: Pyractomena marginalis
Primary Observer:
K Dean Edwards
Event Date:
2025-06-21
Status:
Unreviewed
Survey
Site Name:
Atlee Fields, Knox TN US
Province/State:
Tennessee
Event Date:
2025-06-21
Time of Day:
Night-Time
Start Time:
23:00
End Time:
23:20
Number of Observers:
1
Primary Observer:
K Dean Edwards
Additional Observers:
N/A
Target Species Genus:
Target Species Species:
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Developed - Sub/urban areas; parks/gardens
Habitat Type Notes:
Suburban backyard bordered by woods along ridge
Elevation (meters):
350
Area Searched (hectares):
0
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): Yes
Glare (bright light causing visual discomfort): No
Light Trespass (light cast on surfaces beyond its intended target): Yes
Glare (bright light causing visual discomfort): No
Artificial Light Notes:
Observation
Observation Type:
Flashing
Number Observed:
2-10
Genus:
Pyractomena
Species:
marginalis
Observation Notes:
2+ flying low about 5-10ft above ground in generally straight line giving long bright yellow flashes about every 6-8 seconds. Some flashes long enough to appear as short streaks.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
23:05
Last Flash Time:
23:20
First Flash Temp (F):
75
Last Flash Temp (F):
75
Flashes in Pattern:
>4
Flash Color:
Yellow
Flash Pattern Period:
6-8
Flash Duration:
0.5-1
Flash Interval:
6-8
Male Height Zone:
Moderate (3-8 ft)
Flash Location:
Passing through backyard in direct flights giving long single bright yellow flashes every 6-8s
