EPPO Global Database

EPPO Reporting Service no. 04 - 2020 Num. article: 2020/083

First report of beech leaf disease in Connecticut (US)

During summer 2019, symptoms of beech leaf disease (EPPO Alert List) were observed on Fagus grandifolia (American beech) trees in Connecticut (US). For the moment, the disease was only found in Greenwich, Stamford, and New Canaan (Fairfield county), but it is noted that given the rapid spread and mortality observed in Ohio, it was important to document the distribution of beech leaf disease in Connecticut. In addition, laboratory analysis (morphological, sequencing) of symptomatic leaf tissue revealed the presence of females, males and juveniles of Litylenchus crenatae mccannii.


Marra RE, LaMondia J (2020) First report of beech leaf disease, caused by the foliar nematode, Litylenchus crenatae mccannii, on American beech (Fagus grandifolia) in Connecticut. Plant Disease 104(9), p 2527. https://doi.org/10.1094/PDIS-02-20-0442-PDN