Observation: Pyractomena borealis
Primary Observer:
Jeffrey calta
Event Date:
2026-05-04
Status:
Verified
Survey
Site Name:
Fairview Township
Province/State:
Pennsylvania
Event Date:
2026-05-04
Time of Day:
Night-Time
Start Time:
21:05
End Time:
22:00
Number of Observers:
1
Primary Observer:
Jeffrey calta
Additional Observers:
Na
target_species_genus:
pyractomena
target_species_species:
borealis
Location and Habitat
Location Accuracy (meters):
250-500
Habitat Type:
Woodland/Forest - Trees dominant, and in the over-story
Habitat Type Notes:
Elevation (meters):
400
Area Searched (hectares):
3
Artificial Light Sources
Vehicles: No
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:
With Flash Data
Number Observed:
11-50
genus:
pyractomena
Species:
borealis
Observation Notes:
Specimen Voucher Number:
Flash Behavior
First Flash Time:
21:10
Last Flash Time:
22:00
First Flash Temp (F):
64
Last Flash Temp (F):
63
Flashes in Pattern:
1
Flash Color:
Yellow
Flash Pattern Period:
3
Flash Duration:
1
Flash Interval:
3
Male Height Zone:
Moderate (3-8 ft)
Flash Location:
In and around a line of cherry trees along a small stream
Male Flash Behavior:
Female Flash Behavior:
1 thought on “Observation: Pyractomena borealis”
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Thanks for this survey and observation, Jeff! The early season timing and flash color, timing and height provide solid support for Pyractomena borealis, even without a photo.