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Poster Display

Plant-Insect Ecosystems

Poster: P-IE, Vector Biology and Management

Phenology of Euscelidius variegatus reared under controlled conditions

Tuesday, November 11, 2025
9:00 AM - 5:00 PM Pacific
Location: Exhibit Hall A-A1, OCC
Poster Display
X-disease is a major agricultural pathogen caused by the phytoplasma Candidatus Phytoplasma pruni and is responsible for significant economic losses across the Pacific Northwest (PNW). Euscelidius variegatus (Hemiptera: Cicadellidae) is a key vector of X-disease (XD) and is the most abundant species of leafhopper found in the cherry production region of The Dalles, OR. Little is known about the phenology of this important vector species. Here, we collected E. variegatus adults from commercial cherry orchards, placed them on potted barley plants in the laboratory, and allowed them to lay eggs. The subsequent F1 generation was reared under controlled conditions (25°C, 65% R.H. ± 5%, 16:8 hr L :D), and the time spent at each developmental stage was recorded. The total development time from egg to adult was found to be 35.3 ± 2.5 days (N = 125). Our findings provide essential data for future degree-day models, enhancing understanding of population dynamics, and informing the development of IPM programs.