Observation: Photuris hebes
Primary Observer:
Eva Alexander
Event Date:
2026-06-30
Status:
Unreviewed
Survey
Site Name:
Colhoun Preserve
Province/State:
Connecticut
Event Date:
2026-06-30
Time of Day:
Night-Time
Start Time:
20:53
End Time:
21:39
Number of Observers:
2
Primary Observer:
Eva Alexander
Additional Observers:
Sofia Brooks
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:
Elevation (meters):
105
Area Searched (hectares):
.101171
Artificial Light Sources
Vehicles: Yes
Street Lights: No
Buildings: Yes
Street Lights: No
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): Yes
Light Trespass (light cast on surfaces beyond its intended target): Yes
Glare (bright light causing visual discomfort): Yes
Artificial Light Notes:
There were more cars on the preserve than usual this night because of the tour group. Also, the moon was very bright as it's in a waning gibbous phase currently. Also, pretty intense sky glow. A very bright night but very abundant fireflies.
Observation
Observation Type:
With Flash Data
Number Observed:
50+
genus:
photuris
Species:
hebes
Observation Notes:
The last flash time is an estimate - we left the preserve when many fireflies of the same species were still flashing (9:40 or so). I came back to the preserve around 10:30 and noticed most (if not all) fireflies had ceased flashing so that's why my last flash time is estimated 10:30.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
20:53
Last Flash Time:
22:31
First Flash Temp (F):
77
Last Flash Temp (F):
77
Flashes in Pattern:
>4
Flash Color:
Green
Flash Pattern Period:
7
Flash Duration:
.25
Flash Interval:
1
Male Height Zone:
Moderate (3-8 ft), High (over 8 ft)
Flash Location:
Flashes are just above brush level (moderate zone), but also high up in trees along edge of meadow as high as 50 ft.
