Observation: Unknown
Primary Observer:
Kate Brennan
Event Date:
2026-06-03
Status:
Unreviewed
Survey
Site Name:
Undisclosed
Province/State:
South Carolina
Event Date:
2026-06-03
Time of Day:
Night-Time
Start Time:
21:20
End Time:
21:40
Number of Observers:
2
Primary Observer:
Kate Brennan
Additional Observers:
Matt Brennan
target_species_genus:
unknown
target_species_species:
unknown
Location and Habitat
Location Accuracy (meters):
25-50
Habitat Type:
Riparian - Areas Along lake or stream
Habitat Type Notes:
Riparian habitat along Sugar Creek adjacent to Springfield Golf Club. Stream corridor bordered by mature deciduous trees with a dense, wooded understory and vegetation extending along the creek bank. Habitat includes moist, shaded areas along the creek and a steep wooded embankment. Adjacent land uses include maintained golf-course turf, a retention pond, and residential development. Fireflies were observed primarily within the wooded riparian vegetation and along the creek corridor, from near ground level into the tree canopy.
Elevation (meters):
174
Area Searched (hectares):
2.5
Artificial Light Sources
Vehicles: No
Street Lights: Yes
Buildings: Yes
Street Lights: Yes
Buildings: Yes
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:
Artificial light was present from nearby street lights and surrounding residential/building lighting, producing some diffuse sky glow. No significant glare or direct light trespass was observed at the survey location. Vehicle lighting was not a factor during the observation period.
Observation
Observation Type:
Without Flash Data
Number Observed:
50+
genus:
unknown
Species:
unknown
Observation Notes:
Observed 50+ fireflies concentrated primarily in trees and vegetation along the Sugar Creek corridor adjacent to Springfield Golf Club in Fort Mill, South Carolina. Individuals were visible from approximately 1 foot above ground level to 30 feet or more into the tree canopy, with numerous fireflies flashing throughout the vegetation.
Flashes appeared whitish/pale in color and were generally brief, quick flashes followed by several seconds of darkness. At times, numerous individuals flashed within the same general period, producing a conspicuous “Christmas lights” effect throughout the trees. Activity occurred at multiple vertical levels rather than being restricted to ground-level vegetation.
The observation area includes wooded/riparian habitat associated with Sugar Creek, a steep vegetated embankment, and the edge of Springfield Golf Club, with nearby residential development. Species identification is unknown. The flash behavior and apparent group activity were notable and are being documented for possible identification and comparison with synchronous or coordinated-flashing firefly species.
