Observation: Photinus
Primary Observer:
Richard Joyce
Event Date:
2026-08-04
Status:
Unreviewed
Survey
Site Name:
Dwelly Farm Conservation Area - Back Fields East
Province/State:
Massachusetts
Event Date:
2026-08-04
Time of Day:
Night-Time
Start Time:
20:08
End Time:
22:05
Number of Observers:
9
Primary Observer:
Richard Joyce
Additional Observers:
Emily Merlino, Alexa, Julia, Jameson Dillon, Christy, Mike, Paul,
target_species_genus:
photinus
target_species_species:
marginellus
Location and Habitat
Location Accuracy (meters):
25-50
Habitat Type:
Grassland/Meadow - Meadow, open, grasses dominant
Habitat Type Notes:
The survey was in both an annually-mowed meadow (grasses, goldenrod, sensitive fern) and a mixed forest (eastern hemlock, red maple, white birch, white pine).
Elevation (meters):
308
Area Searched (hectares):
1
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:
There is minimal artificial light at this site.
Observation
Observation Type:
Without Flash Data
Number Observed:
2-10
genus:
photinus
Species:
unknown
Observation Notes:
The first four images (8 mm male and 9 mm female) were captured together (presumably copulating) while perched in the meadow. The last two images are of a female (7.5 mm) that was on her own.
mGDD accumulation (Orange Municipal Airport)= 1802
