Pityophthorus juglandis Blackman, 1928

on Juglans

walnut twig beetle

parasite

Larvae and adults bore in the bark of thick branches.

host plants

Juglandaceae, monophagous

Juglans regia.

distribution within Europe

Mexican and North American species, recorded in Italy.

notes

Vector of the fungus Geosmithia morbida Kolařík, Freeland, Utley & Tisserat, 2010, causer of the “thousand cankers disease” that kills a tree in 2-4 years.

references

Boomsluiter (2014a), Faccoli, Simonato & Rassati (2016a).