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Observation: Photinus pyralis
Primary Observer:
Ed Chapman
Event Date:
2025-07-03
Status:
Verified
Survey
Site Name:
13 Hardenberg St., New Brunswick
Province/State:
New Jersey
Event Date:
2025-07-03
Time of Day:
Day-Time
Start Time:
18:15
End Time:
18:30
Number of Observers:
2
Primary Observer:
Ed Chapman
Additional Observers:
Norma Hoffman
Target Species Genus:
Photinus
Target Species Species:
pyralis
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Developed - Sub/urban areas; parks/gardens
Habitat Type Notes:
Mugwort, goldenrod, native and non-native "weeds." Oaks, maples, hackberry. Grape arbor, fig trees. Unmowed grass.
Elevation (meters):
69
Area Searched (hectares):
1/8
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): 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:
Flashing
Number Observed:
11-50
Genus:
Photinus
Species:
pyralis
Observation Notes:
20-30 in our small backyard (1/8 acre). Storm about to rain. As the sky darkened, the males rose up from mugwort and goldenrod and elsewhere. Lots of flashes before the rain started.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
18:15
Last Flash Time:
18:30
First Flash Temp (F):
83
Last Flash Temp (F):
79
Flashes in Pattern:
1
Flash Color:
Yellow
Flash Pattern Period:
2
Flash Duration:
2
Flash Interval:
5
Male Height Zone:
Low (0-3 ft)
Flash Location:
20-30 in our small backyard (1/8 acre). Storm about to rain. As the sky darkened, the males rose up from mugwort and goldenrod and elsewhere. Lots of flashes before the rain started.
Male Flash Behavior:
Low flying.
Female Flash Behavior:
Stationary.
