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Observation: Photuris forresti
Primary Observer:
Richard Joyce
Event Date:
2025-05-20
Status:
Verified
Survey
Site Name:
Hard Labor Creek State Park, campground wetland
Province/State:
Georgia
Event Date:
2025-05-20
Time of Day:
Night-Time
Start Time:
21:39
End Time:
23:00
Number of Observers:
9
Primary Observer:
Richard Joyce
Additional Observers:
DNR, etc.
Target Species Genus:
Photuris
Target Species Species:
forresti
Location and Habitat
Location Accuracy (meters):
50-100
Habitat Type:
Forested Wetland - Swamp, cedar bog, mangrove
Habitat Type Notes:
Swamp with overstory of red maple (pretty open canopy) and an understory of green arrow arum and broadleaf arrowhead.
Elevation (meters):
175
Area Searched (hectares):
0.5
Artificial Light Sources
Vehicles: No
Street Lights: Yes
Buildings: No
Street Lights: Yes
Buildings: No
Artificial Light Types
Sky Glow (diffuse illumination in the sky): Yes
Light Trespass (light cast on surfaces beyond its intended target): Yes
Glare (bright light causing visual discomfort): Yes
Light Trespass (light cast on surfaces beyond its intended target): Yes
Glare (bright light causing visual discomfort): Yes
Artificial Light Notes:
Most ALAN came from a bucketlight style, unshielded streetlamp in the campground. Other sources included RVs and decorative lights by the campground host's RV.
Observation
Observation Type:
Flashing
Number Observed:
11-50
Genus:
Photuris
Species:
forresti
Observation Notes:
~12-13 mm long.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
21:50
Last Flash Time:
22:55
First Flash Temp (F):
80
Last Flash Temp (F):
76
Flashes in Pattern:
>4
Flash Color:
Green
Flash Pattern Period:
Not recorded
Flash Duration:
~0.1
Flash Interval:
~0.4 seconds
Male Height Zone:
Low (0-3 ft), Moderate (3-8 ft)
Flash Location:
Mostly over the herbaceous wetland vegetation.
Male Flash Behavior:
Sets of 5-7 pulses, with a flash period of about 0.5 seconds and a final pulse that lasted longer than the others, emitted while bobbing up and down vertically. Long flash pattern periods that were not able to be recorded, but exceeded 5 seconds.
Female Flash Behavior:
A female (presumed based on habitat and dark hind coxae) was caught while emitting a series of quick flashes on the wing, somewhat similar to a male P. forresti flash pattern, but less "up and down," with dimmer flashes and more consistent flash duration.
