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Observation: Photinus ignitus
Primary Observer:
Mary Hammer
Event Date:
2025-06-24
Status:
Unreviewed
Survey
Site Name:
Cooley Brook, Warren Terrace, Longmeadow, MA
Province/State:
Massachusetts
Event Date:
2025-06-24
Time of Day:
Night-Time
Start Time:
21:45
End Time:
22:00
Number of Observers:
1
Primary Observer:
Mary Hammer
Additional Observers:
Target Species Genus:
Photinus
Target Species Species:
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Riparian - Areas Along lake or stream
Habitat Type Notes:
Cooley Brook riparian community along my property line. Mixed hardwood forest, maples, pagoda dogwoods, elderberry.
Elevation (meters):
160
Area Searched (hectares):
0.12
Artificial Light Sources
Vehicles: No
Street Lights: Yes
Buildings: Yes
Street Lights: Yes
Buildings: Yes
Artificial Light Types
Sky Glow (diffuse illumination in the sky): No
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:
One streetlight and neighbors across the street keep post light and porch lights on all night..... I use no exterior lighting.
Observation
Observation Type:
Flashing
Number Observed:
2-10
Genus:
Photinus
Species:
ignitus
Observation Notes:
Multiple individuals observed, primarily within the riparian corridor that abuts my home (Cooley Brook). Yellow green flashes, several seconds apart. Believe to be Photinus ignitus, but I have not netted and identified to species yet.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
21:45
Last Flash Time:
22:00
First Flash Temp (F):
86
Last Flash Temp (F):
86
Flashes in Pattern:
1
Flash Color:
Yellow
Flash Pattern Period:
4-5
Flash Duration:
1
Flash Interval:
4-5
Male Height Zone:
Moderate (3-8 ft), High (over 8 ft)
Flash Location:
I have observed flashing over the last 3 weeks both in my backyard (mowed grass) and inside the riparian corridor that abuts my yard. Flashing fireflies are located at multiple heights, I have seen them flash at about 4 feet above ground and higher up within the trees (over 8 feet).
