Observation: Photinus macdermotti

Observation: Photinus macdermotti

Primary Observer:

Gini Bell

Event Date:

2026-05-18

Status:

Unreviewed

Survey

Site Name:

Northwest District Park

Province/State:

North Carolina

Event Date:

2026-05-18

Time of Day:

Night-Time

Start Time:

20:30

End Time:

21:30

Number of Observers:

2

Primary Observer:

Gini Bell

Additional Observers:

Barbara Fisher

target_species_genus:

unknown

target_species_species:

unknown

Location and Habitat

Location Accuracy (meters):

100-250

Habitat Type:

Woodland/Forest - Trees dominant, and in the over-story

Habitat Type Notes:

The areas we surveyed contained primarily woodland/forest, with some developed park area consisting of gravel driveway and a large pond, with a thin strip of mowed grass around it, surrounded by woodland with an oak-hickory-pine forest.

Elevation (meters):

540

Area Searched (hectares):

.026

Artificial Light Sources

Vehicles: No
Street Lights: Yes
Buildings: Yes

Artificial Light Types

Sky Glow (diffuse illumination in the sky): No
Light Trespass (light cast on surfaces beyond its intended target): Yes
Glare (bright light causing visual discomfort): No

Artificial Light Notes:

Dark park with orange/yellowish streetlights illuminating drive. Lights came on as darkness fell, but several lights in the survey area were flickering off and on while we were there. Pond reflected streetlights.

Observation

Observation Type:

With Flash Data

Number Observed:

11-50

genus:

photinus

Species:

macdermotti

Observation Notes:

12mm long, mostly in the woods around the pond flying less than 5 feet off the ground. Some got higher as the evening went on. Noticed first flashes just after dusk, then Mostly all had stopped flashing by about 9:15pm. Not sure about the species.

Specimen Voucher Number:

Flash Behavior

First Flash Time:

20:40

Last Flash Time:

21:15

First Flash Temp (F):

81

Last Flash Temp (F):

78

Flashes in Pattern:

2

Flash Color:

Yellow

Flash Pattern Period:

7?

Flash Duration:

.75

Flash Interval:

3

Male Height Zone:

Moderate (3-8 ft)

Flash Location:

woods/forest around the pond

Male Flash Behavior:

 

Female Flash Behavior:

 

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