peninsular shieldback
Aglaothorax nesiazo
The black dots 
on the distribution map represent county records.
The above map shows the localities for the Morsei Group species from Cole et al. (2025). The red dots (enclosed in a black line*) show localities for A. nesiazo.
State: California
Riverside County: Menifee Valley.
San Diego County:
Torrey Pines State Park.
3-10 miles southwest of Borrego Springs on road S22.
Boulder Oaks Campground, Cleveland National Forest, 8 miles southeast of Pine Valley off I-8.
Camp Pendleton, Vandegrift Road, 3 miles south of Basilone.
Campo, Highway 94.
Mission Trails Regional Park, Brushy Gate.
Troy Canyon, Cleveland National Forest, 10 miles north of Boulder Oaks on Kitchen Creek Road.
*Line encircling the locality dots was added to the map by the SINA editor (tmy) to help the viewer pick out the dots; this is not an indication of range or distribution.
Summary of Species' SINA Distribution*
Aglaothorax nesiazo is found in the southern Peninsular Ranges of California.
*North America, north of Mexico.
List of United States Regions, States, and Counties
Map of
United States
Regions
Map of United States Regions
West Region
State: California
Counties: Riverside, San Diego.
Notes
References:
The distribution map on this page is referred to as the 2024 distribution map.
All records are from Cole et al. (2025). [tmy 11 January 2026]