Observation: Photuris
Primary Observer:
Brenda
Event Date:
2024-06-04
Status:
Unverified
Survey
Site Name:
Undisclosed
Province/State:
Pennsylvania
Event Date:
2024-06-04
Time of Day:
Night-Time
Start Time:
23:15
End Time:
23:15
Number of Observers:
1
Primary Observer:
Brenda
Additional Observers:
target_species_genus:
target_species_species:
Location and Habitat
Location Accuracy (meters):
25-50
Habitat Type:
Woodland/Forest - Trees dominant, and in the over-story
Habitat Type Notes:
Elevation (meters):
Unknown
Area Searched (hectares):
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:
Observation
Observation Type:
With Flash Data
Number Observed:
1
genus:
photuris
Species:
unknown
Observation Notes:
Specimen Voucher Number:
Flash Behavior
First Flash Time:
23:15
Last Flash Time:
23:15
First Flash Temp (F):
69
Last Flash Temp (F):
69
Flashes in Pattern:
3
Flash Color:
Green
Flash Pattern Period:
1
Flash Duration:
9
Flash Interval:
3
Male Height Zone:
Moderate (3-8 ft)
Flash Location:
Grassy area
Male Flash Behavior:
Flash flash pause flash flash pause flash flash pause
Female Flash Behavior:
1 thought on “Observation: Photuris”
Leave a Comment
You must be logged in to post a comment.
Thanks for submitting this firefly observation! Both the green flash color and the late-evening display time suggest a firefly in the genus Photuris, but a photos would be needed to confirm the species.
A note about flash pattern details:
“Flash pattern period” refers to the number of seconds between the start of a flash pattern and the start of the next repetition of that flash pattern. For example, Photinus pyralis typically has a flash pattern period of 5-7 seconds.
“Flash duration” is how long each flash lasts. Usually this is too fast to measure accurately, but you can estimate whether it is more or less than 0.5 seconds, you can enter “not recorded,” or you can do a verbal description (such as “very brief”).
“Flash interval” refers to the time between the end of one flash and the beginning of the next. In species with single flash patterns and short flash durations, this is basically the same as “flash pattern period,” just a little shorter.