Observation: Photuris douglasae
Primary Observer:
Richard Joyce
Event Date:
2026-04-13
Status:
Unreviewed
Survey
Site Name:
Nine Mile Pond
Province/State:
Florida
Event Date:
2026-04-13
Time of Day:
Night-Time
Start Time:
21:24
End Time:
21:47
Number of Observers:
2
Primary Observer:
Richard Joyce
Additional Observers:
Kevin Burls
target_species_genus:
micronaspis
target_species_species:
floridana
Location and Habitat
Location Accuracy (meters):
50-100
Habitat Type:
Forested Wetland - Swamp, cedar bog, mangrove
Habitat Type Notes:
Red mangrove and buttonwood shoreline of Nine Mile Pond, mowed grass and herbaceous vegetation at the boat put-in, and shrubby upland vegetation on the opposite side of the parking lot.
Elevation (meters):
0.4
Area Searched (hectares):
0.4
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:
Sky glow on the horizon.
Observation
Observation Type:
With Flash Data
Number Observed:
2-10
genus:
photuris
Species:
douglasae
Observation Notes:
ID based on small (10 mm) size, color of hind coxae, flash pattern, and habitat, consulting Lloyd 2018 description.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
21:24
Last Flash Time:
21:47
First Flash Temp (F):
73
Last Flash Temp (F):
72
Flashes in Pattern:
1
Flash Color:
Green
Flash Pattern Period:
3.4
Flash Duration:
Not recorded
Flash Interval:
Not recorded
Male Height Zone:
Low (0-3 ft), Moderate (3-8 ft), High (over 8 ft)
Flash Location:
Most flashes were in the among the mangrove vegetation on the shoreline of Nine Mile Pond, but individuals also flashed over mowed, open areas by the put-in and parking lot.
Male Flash Behavior:
The flash pattern consisted of a single, green flash repeated at intervals of about 3.4 seconds at 72 degrees F (22.2 C). Most flashes were at moderate (~chest high) heights.
Female Flash Behavior:
Not observed.
