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Observation: Pyractomena dispersa
Primary Observer:
Candace Fallon
Event Date:
2025-06-10
Status:
Unreviewed
Survey
Site Name:
Three Forks
Province/State:
Arizona
Event Date:
2025-06-10
Time of Day:
Night-Time
Start Time:
21:16
End Time:
21:30
Number of Observers:
2
Primary Observer:
Candace Fallon
Additional Observers:
Saff Killingsworth
Target Species Genus:
Target Species Species:
Location and Habitat
Location Accuracy (meters):
25-50
Habitat Type:
Riparian - Areas Along lake or stream
Habitat Type Notes:
Riparian area and spring-fed pond in high elevation meadow.
Elevation (meters):
2510
Area Searched (hectares):
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): No
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:
Site is downhill from Forest Service road so some light pollution from passing vehicles is possible (although the area appears relatively untraveled after dark).
Observation
Observation Type:
Flashing
Number Observed:
11-50
Genus:
Pyractomena
Species:
dispersa
Observation Notes:
Approximately 15 individuals seen flashing along the East Fork Black River and another unnamed creek to the west of the spring-fed pond south of the Forest Service Rd 249. Site was not accessed directly (access not permitted) but was viewed from roadside above. Site was visually checked after other firefly surveys in the area, so it is likely the activity period for the species was winding to a close for the night. Habitat looks ideal (seen earlier in the day in the daylight) and it is possible there are many more fireflies here. No photographs taken.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
21:16
Last Flash Time:
21:30
First Flash Temp (F):
Unknown
Last Flash Temp (F):
Unknown
Flashes in Pattern:
3
Flash Color:
Orange
Flash Pattern Period:
Not recorded
Flash Duration:
Not recorded
Flash Interval:
Not recorded
Male Height Zone:
Low (0-3 ft), Moderate (3-8 ft)
Flash Location:
Alongside creek and pond above vegetation.
