Observation: Photinus macdermotti
Primary Observer:
Richard Joyce
Event Date:
2025-05-20
Status:
Unverified
Survey
Site Name:
Hard Labor Creek State Park, astronomy observatory
Province/State:
Georgia
Event Date:
2025-05-20
Time of Day:
Night-Time
Start Time:
20:30
End Time:
21:30
Number of Observers:
9
Primary Observer:
Richard Joyce
Additional Observers:
A. Yellin, D. Guzman, A. Blades, R. Montalvo, A. Jennings, A. Fox, M. Hedeen, T. Moore
target_species_genus:
photuris
target_species_species:
frontalis
Location and Habitat
Location Accuracy (meters):
50-100
Habitat Type:
Woodland/Forest - Trees dominant, and in the over-story
Habitat Type Notes:
Mixed woods with sweet gums, pines, and oaks.
Elevation (meters):
214
Area Searched (hectares):
0.6
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:
Because this was an early evening survey, sky glow was not readily apparent. There are no ALAN sources immediately within this survey area.
Observation
Observation Type:
With Flash Data
Number Observed:
2-10
genus:
photinus
Species:
macdermotti
Observation Notes:
Body length of ~9 mm.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
20:43
Last Flash Time:
21:05
First Flash Temp (F):
79
Last Flash Temp (F):
79
Flashes in Pattern:
2
Flash Color:
Yellow
Flash Pattern Period:
Not recorded, but several seconds.
Flash Duration:
Brief, not recorded.
Flash Interval:
Not recorded
Male Height Zone:
Low (0-3 ft), Moderate (3-8 ft)
Flash Location:
In the forest understory, mostly about chest height.
Male Flash Behavior:
Flash pattern timings were not recorded, but one individual appeared to be doing paired pulses.
Female Flash Behavior:
Not observed.
