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Observation: Photuris
Primary Observer:
Kelsey Marcellus
Event Date:
2025-06-21
Status:
Unverified
Survey
Site Name:
High Bridge State Park
Province/State:
Virginia
Event Date:
2025-06-21
Time of Day:
Night-Time
Start Time:
20:30
End Time:
22:30
Number of Observers:
4
Primary Observer:
Kelsey Marcellus
Additional Observers:
Trey Lewis, Kenney Lewis, James Geinous
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:
Elevation (meters):
525
Area Searched (hectares):
1
Artificial Light Sources
Vehicles: No
Street Lights: No
Buildings: Yes
Some others around had glow sticks or red lights
Street Lights: No
Buildings: Yes
Some others around had glow sticks or red lights
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:
Observation
Observation Type:
Flashing
Number Observed:
50+
Genus:
Photuris
Species:
unknown
Observation Notes:
High bridge was looking o er the tree tops and there were clusters that could be seen all along the bridge but closest to the appomattox river. We saw majority green and yellow. But a few individuals of orange was there.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
20:30
Last Flash Time:
22:30
First Flash Temp (F):
84
Last Flash Temp (F):
77
Flashes in Pattern:
>4
Flash Color:
Green
Flash Pattern Period:
0
Flash Duration:
3
Flash Interval:
10
Male Height Zone:
High (over 8 ft)
Flash Location:
In the tops of the trees
Male Flash Behavior:
Female Flash Behavior:
1 thought on “Observation: Photuris”
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The fireflies with green flashes seen en-masse around the treetops at this time of year are generally in the genus Photuris, but their tree-top habits make them very challenging to study and identify!