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Observation: Pyractomena
Primary Observer:
Richard Joyce
Event Date:
2025-06-17
Status:
Unreviewed
Survey
Site Name:
Dwelly Farm Conservation Area - Back Fields East
Province/State:
Massachusetts
Event Date:
2025-06-17
Time of Day:
Night-Time
Start Time:
20:26
End Time:
22:05
Number of Observers:
9
Primary Observer:
Richard Joyce
Additional Observers:
Emily M., Carrie N., Jiapeng G., Yixi W., Cathy P., Ryan T., Cassidy
Target Species Genus:
unknown
Target Species Species:
unknown
Location and Habitat
Location Accuracy (meters):
25-50
Habitat Type:
Grassland/Meadow - Meadow, open, grasses dominant
Habitat Type Notes:
Wet old field (previously a dairy farm pasture) with goldenrod, sensitive fern, sedges, grasses.
Elevation (meters):
308
Area Searched (hectares):
0.2
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:
Minimal ALAN except for sky glow.
Observation
Observation Type:
Flashing
Number Observed:
11-50
Genus:
Pyractomena
Species:
unknown
Observation Notes:
About 9 mm long.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
21:05
Last Flash Time:
22:05
First Flash Temp (F):
67
Last Flash Temp (F):
65
Flashes in Pattern:
1
Flash Color:
Green
Flash Pattern Period:
Several seconds
Flash Duration:
Over one second
Flash Interval:
Not recorded
Male Height Zone:
Low (0-3 ft)
Flash Location:
Low over the field.
Male Flash Behavior:
Males emitted long, greenish glows while flying in a "meandering" or drifting trajectory.
Female Flash Behavior:
Not observed.
