ENDANGERED SPECIES ACT PROFILE

PROTECTION STATUS: Not listed

LISTING HISTORY: Listing proposals withdrawn four times since 1993

RANGE: Endemic to the Sonoran Desert in southern California (San Diego, Riverside, and Imperial counties), Arizona (Yuma County), and northwestern Mexico (Sonora and Baja)

THREATS: Urban and agricultural development, off-road vehicle activity, energy development, military activities, introduction of nonnative plants, pesticide use, and habitat degradation due to Border Patrol and illegal drive-through traffic along the United States-Mexico border

POPULATION TREND: The species is considered to be in moderate decline.