Observation: Photuris
Primary Observer:
Richard Joyce
Event Date:
2023-06-14
Status:
Verified
Survey
Site Name:
Muscatatuck National Wildlife Refuge- Restle Unit
Province/State:
Indiana
Event Date:
2023-06-14
Time of Day:
Night-Time
Start Time:
00:55
End Time:
00:35
Number of Observers:
1
Primary Observer:
Richard Joyce
Additional Observers:
NA
target_species_genus:
photuris
target_species_species:
walldoxeyi
Location and Habitat
Location Accuracy (meters):
0-25
Habitat Type:
Open Freshwater Wetland - Wetland Bog, fen, freshwater marsh
Habitat Type Notes:
Low, open wet area with herbaceous vegetation and shrubs, accessed via raised viewing platform right off of North Bottom Road.
Elevation (meters):
175
Area Searched (hectares):
0.19
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:
Artificial light at night was limited to sky glow.
Observation
Observation Type:
With Flash Data
Number Observed:
2-10
genus:
photuris
Species:
unknown
Observation Notes:
No fireflies were caught or handled.
The stacked long exposures were from 60 seconds and 105 seconds of exposure time, respectively.
These long glows seem like they'd fit under Jim Lloyd's Penn Group 1 or Penn Group 2 demes.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
00:35
Last Flash Time:
00:55
First Flash Temp (F):
70.7
Last Flash Temp (F):
70.7
Flashes in Pattern:
1
Flash Color:
Green
Flash Pattern Period:
5.2-13.5
Flash Duration:
0.8-2.2
Flash Interval:
3-10
Male Height Zone:
Low (0-3 ft), Moderate (3-8 ft)
Flash Location:
Relatively low over the open herbaceous/shrubby wetland.
Male Flash Behavior:
In the moment I described the flashes as "falling, trembling glows." In the photos, these glows seem to slowly taper or fade. From voice recordings, glows seemed to last 1-2 seconds (0.8-2.2) and flash periods were mostly between 5 and 6.5 seconds, with an outlier of 13.5 seconds.
