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Transverse Ranges

Western pine beetle
Dwarf mistletoe
Douglas fir tussock moth, William M. Ciesl
Transverse region

Transverse Ranges
These east-west-oriented mountains are located north of the greater Los Angeles Metropolitan area. They feature low-elevation chaparral, oak woodland and savanna, and pinyon-juniper woodlands, and higher-elevation forests that include white fir, Jeffrey pine, sugar pine, and lodgepole pine.

Typical insect and disease problems
• Native bark beetles including Ips, Scolytus, and Dendroctonus species
• Heterobasidion root disease
• Douglas-fir tussock moth
• True mistletoes in oaks
• Dwarf mistletoes in conifers

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