Observation: Photinus knulli
Primary Observer:
Mackenzie Moore
Event Date:
2024-08-13
Status:
Verified
Survey
Site Name:
Tumacacori National Historical Park, Santa Cruz River
Province/State:
Arizona
Event Date:
2024-08-13
Time of Day:
Night-Time
Start Time:
19:53
End Time:
21:55
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:
Woodland/Forest - Trees dominant, and in the over-story
Habitat Type Notes:
Mesquite Bosque, Cottonwood-Willow forest, and Riparian areas surveyed.
Dominant Vegetation: Freemont's Cottonwood, Mesquite, Canyon Hackberry, Seep Willow, Ambrosia sp.
Elevation (meters):
701.04
Area Searched (hectares):
129
Artificial Light Sources
Vehicles: No
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): 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:
Light domes from Sahuarita and Nogales visible.
Observation
Observation Type:
With Flash Data
Number Observed:
50+
genus:
photinus
Species:
knulli
Observation Notes:
6-10mm in length
males flashing from low grass to the highest parts of the canopy.
Specimen Voucher Number:
Flash Behavior
First Flash Time:
19:53
Last Flash Time:
21:55
First Flash Temp (F):
76.1
Last Flash Temp (F):
75
Flashes in Pattern:
3
Flash Color:
Green
Flash Pattern Period:
9.5- 12
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:
Males flashing from low grass to the highest parts of the canopy (~24 meters).
Females flashing from grasses and low shrubs.
Male Flash Behavior:
1.5 second triplets with 6-8 seconds of pause in between triplets.
Wave and true synchrony events observed.
Female Flash Behavior:
muted single to triple flashes, and some sustained glows for 3-5 seconds.
