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Observation: Photuris tremulans
Primary Observer:
Pam Morgan
Event Date:
2025-06-02
Status:
Verified
Survey
Site Name:
Osage Park - SE boardwalk
Province/State:
Arkansas
Event Date:
2025-06-02
Time of Day:
Night-Time
Start Time:
21:40
End Time:
10:45
Number of Observers:
1
Primary Observer:
Pam Morgan
Additional Observers:
NA
Target Species Genus:
unknown
Target Species Species:
unknown
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Woodland/Forest - Trees dominant, and in the over-story
Habitat Type Notes:
Osage Park is a restored wetland bordering Lake Bentonville, a small lake. The survey took place on the boardwalk in the SE corner of the park. To the west is Lake Bentonville, separated from the boardwalk by about 60 meters of woods. To the east of the boardwalk is about 60 meters of woods and then houses in a neighborhood. To the north there is more park, and to the south there is woods for another 150 meters and then another neighborhood with houses. In the woods, there are medium-size trees (about 20 m tall), including oak, elm, maple, sycamore, and hackberry trees. In the understory, there are smaller trees, plus giant ragweed, pokeweed, grapevines, sedges, and other vines. The park has been working to remove invasive species, such as honeysuckle and privet, and plant native species over the last couple of years.
Elevation (meters):
389
Area Searched (hectares):
.8
Artificial Light Sources
Vehicles: No
Street Lights: Yes
Buildings: Yes
light from nearby small airport
Street Lights: Yes
Buildings: Yes
light from nearby small airport
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:
Osage Park is an urban park and there are many streets nearby. The most fireflies were flashing in the most wooded area of the park, but it was never very dark. One can see street lights shining through the trees, and the park is adjacent to a small airport, and the lights on the runway were visible. There are no lights on the boardwalk running through the park.
Observation
Observation Type:
Flashing
Number Observed:
50+
Genus:
Photuris
Species:
tremulans
Observation Notes:
11.5 mm. Flying quickly through the trees bordering the boardwalk, mostly low (below 6 ft), but a few were higher in the treetops.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
21:45
Last Flash Time:
22:45
First Flash Temp (F):
77
Last Flash Temp (F):
76
Flashes in Pattern:
1
Flash Color:
Green
Flash Pattern Period:
3.3
Flash Duration:
.3
Flash Interval:
3
Male Height Zone:
Low (0-3 ft), Moderate (3-8 ft), High (over 8 ft)
Flash Location:
Most flashes were between 3 to 6 feet. A few were lower and a few were in the treetops.
Male Flash Behavior:
Males would fly quickly, giving a very quick flash every 3 seconds. There were many flashing in the woods, and it looked like a beautiful show of sparkles. I was able to track a few that were closer to the boardwalk to count the flash pattern. Also, as it got later (10:30 pm), there were fewer, so it was easier to follow the flash pattern of individuals. I tried to catch one for an hour, and it was very difficult. The one I caught was flashing from the same spot about 2 feet above the ground (although not perched on vegetation - just hovering).
Female Flash Behavior:
I observed some flashes that were stationary on vegetation, but they weren't close enough to catch and observe. Single flashes.
