Observation: Photinus knulli
Primary Observer:
Mackenzie Moore
Event Date:
2024-09-11
Status:
Verified
Survey
Site Name:
Tumacacori National Historical Park, Santa Cruz River
Province/State:
Arizona
Event Date:
2024-09-11
Time of Day:
Night-Time
Start Time:
18:45
End Time:
20:46
Number of Observers:
2
Primary Observer:
Mackenzie Moore
Additional Observers:
Tony Palmer
Target Species Genus:
Photinus
Target Species Species:
knulli
Location and Habitat
Location Accuracy (meters):
100-250
Habitat Type:
Riparian - Areas Along lake or stream
Habitat Type Notes:
Freemont's Cottonwood, Gooding's Willow, Mesquite, Johnsongrass.
Elevation (meters):
975.36
Area Searched (hectares):
259
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:
Observation
Observation Type:
Flashing
Number Observed:
50+
Genus:
Photinus
Species:
knulli
Observation Notes:
181 individuals observed during the survey in warm pockets of air in the shade of tall vegetation. Groups would shift with warm air pockets and cool air pockets would cause areas to stop flashing. The areas where cool air was replaced with warmer air would become active again.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
19:00
Last Flash Time:
20:45
First Flash Temp (F):
76.4
Last Flash Temp (F):
72.4
Flashes in Pattern:
3
Flash Color:
Green
Flash Pattern Period:
7.5
Flash Duration:
less than 1
Flash Interval:
1.5
Male Height Zone:
Low (0-3 ft), Moderate (3-8 ft), High (over 8 ft)
Flash Location:
In shaded areas under trees and bushes.
Male Flash Behavior:
Males flying with the triplet flashes
Female Flash Behavior:
Sporadic glows or blinking from low vegetation.
