Unknown #4
Pink-cone-gall wasp
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Hosts: Quercus cornelius-mulleri
Shiny, smooth, pink galls with a dark nipple at the apex on the underside of Muller's oak leaves. Galls usually occur one to two per leaf on lateral veins.
Range: Santa Rosa Mountains, CA
”- Russo, Ronald A. : (2021) Plant Galls of the Western United States©