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Observation: Unknown
Primary Observer:
Mary
Event Date:
2025-07-12
Status:
Unverified
Survey
Site Name:
Province/State:
Minnesota
Event Date:
2025-07-12
Time of Day:
Night-Time
Start Time:
22:00
End Time:
22:41
Number of Observers:
1
Primary Observer:
Mary
Additional Observers:
Target Species Genus:
Target Species Species:
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Developed - Sub/urban areas; parks/gardens
Habitat Type Notes:
grass and old leaves from last year as well as weeds and some sticks and logs
Elevation (meters):
1
Area Searched (hectares):
Artificial Light Sources
Vehicles: No
Street Lights: Yes
Buildings: No
Street Lights: Yes
Buildings: No
Artificial Light Types
Sky Glow (diffuse illumination in the sky): No
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:
2-10
Genus:
unknown
Species:
unknown
Observation Notes:
flying around the backyard in seemingly random ways
Specimen Voucher Number:
Flash Behavior
First Flash Time:
22:00
Last Flash Time:
22:40
First Flash Temp (F):
70
Last Flash Temp (F):
70
Flashes in Pattern:
1
Flash Color:
Yellow
Flash Pattern Period:
1
Flash Duration:
2
Flash Interval:
5
Male Height Zone:
Low (0-3 ft)
Flash Location:
Over the yard about 3 feet
Male Flash Behavior:
Female Flash Behavior:
1 thought on “Observation: Unknown”
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Thank you for submitting this firefly observation! I’m not able to identify the species with the evidence provided, but these were most likely fireflies in the genus Photinus or Photuris.
A note about flash pattern terminology:
“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.