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Observation: Photuris tremulans
Primary Observer:
Richard Joyce
Event Date:
2025-05-19
Status:
Verified
Survey
Site Name:
Kings Mountain State Park, Lake Crawford
Province/State:
South Carolina
Event Date:
2025-05-19
Time of Day:
Night-Time
Start Time:
23:02
End Time:
23:20
Number of Observers:
4
Primary Observer:
Richard Joyce
Additional Observers:
B. O'Brien, K. Podmore, B. Smith
Target Species Genus:
Photuris
Target Species Species:
forresti
Location and Habitat
Location Accuracy (meters):
25-50
Habitat Type:
Riparian - Areas Along lake or stream
Habitat Type Notes:
Habitats included herbaceous vegetation at one of the inlets to L. Crawford and a mix of sweet gum and thistle below the spillway which is where we spent most of the survey.
Elevation (meters):
215
Area Searched (hectares):
1
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:
Minimal ALAN.
Observation
Observation Type:
Flashing
Number Observed:
50+
Genus:
Photuris
Species:
tremulans
Observation Notes:
About 13 mm long.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
23:10
Last Flash Time:
23:35
First Flash Temp (F):
71
Last Flash Temp (F):
71
Flashes in Pattern:
1
Flash Color:
Green
Flash Pattern Period:
2.2-4.7
Flash Duration:
short
Flash Interval:
~2--4.5
Male Height Zone:
Low (0-3 ft), Moderate (3-8 ft), High (over 8 ft)
Flash Location:
Flashes were both low over the brushy field and among the trees bordering the opening, including high in the canopy.
Male Flash Behavior:
Flash patterns consisted of a mix of bright single flashes at periods of 2.2-4.7 seconds and rapid flickers emitted in flight.
Female Flash Behavior:
Not observed.
