Observation: Photinus cookii
Primary Observer:
Pam Morgan
Event Date:
2024-06-06
Status:
Verified
Survey
Site Name:
Undisclosed
Province/State:
Arkansas
Event Date:
2024-06-06
Time of Day:
Day-Time
Start Time:
20:30
End Time:
20:30
Number of Observers:
1
Primary Observer:
Pam Morgan
Additional Observers:
target_species_genus:
target_species_species:
Location and Habitat
Location Accuracy (meters):
25-50
Habitat Type:
Developed - Sub/urban areas; parks/gardens
Habitat Type Notes:
Drainage ditch along road. One side is a privacy fence separating homes, the other side is a road with minimal traffic. At the end of the road (about 20 m from where the firefly was found) is a pasture with a couple of horses and long grass. The ditch has a few trees (American elm, black cherry, white mulberry, sassafras) and was cut back in the fall with herbicide applied. It was choked with large grape vines and weeds. Now it is mostly groundnut vines, pokeweed, and some grasses.
Elevation (meters):
384
Area Searched (hectares):
Artificial Light Sources
Vehicles: Yes
Street Lights: Yes
Buildings: Yes
Street Lights: Yes
Buildings: Yes
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): No
Light Trespass (light cast on surfaces beyond its intended target): Yes
Glare (bright light causing visual discomfort): No
Artificial Light Notes:
Observation
Observation Type:
Without Flash Data
Number Observed:
1
genus:
photinus
Species:
cookii
Observation Notes:
7 to 7.5 mm long (graph paper has 5 mm squares)
resting on long grass in drainage ditch
Specimen Voucher Number:
Flash Behavior
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Last Flash Temp (F):
Flashes in Pattern:
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Female Flash Behavior:
1 thought on “Observation: Photinus cookii”
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Nice find, Pam! I believe that the color and shape of the pygidium (dark and rounded vs. yellowish and squared-off) would rule out Photinus indictus, which is found further north.