FIRST REPORT OF GEOSMITHIA PALLIDA AND G. LANGDONII ASSOCIATED WITH LIPARTHRUM COLCHICUM IN CENTRAL ITALY

Abstract

Bark and wood-boring beetles feeding on coniferous and deciduous trees in different forest ecosystems are often associated with various species of fungi. In 2019, widespread attacks of Liparthrum colchicum Semenov (Coleoptera Curculionidae Scolytinae) were observed on Laurus nobilis L. in Tuscany (Italy). Samples of colonized terminal twigs were collected to investigate the presence of phytopathogenic fungi associated with the scolytid. Two different colonies of the Geosmithia genus were identified as Geosmithia pallida and Geosmithia langdonii. To our knowledge this is the first report of G.pallida and G. langdonii associated with L. colchicum on Bay tree, in Italy.