Plant Parasites of Europe

leafminers, galls and fungi

Hylesinus fraxini

Hylesinus fraxini (Panzer, 1779)

ash bark beetle

on Fraxinus, etc.

Hylesinus fraxini: "bark rose"

“bark rose” (from WSL.CH)

parasite

In spring the female bores a horizontal gallery in the bark, depositing a series of eggs, each one in a separate chamber. The emerging larvae then each make a short vertical gallery from their egg chamber. Before she can oviposition the female goes through a period of maturation feeding. She the bores in the green bark of a young tree. Repeated infections by a number of females may induce cankerous swellings, called bark roses. Monogamous species.

host plants

polyphagous

Ailanthus; Fagus sylvatica; Fraxinus angustifolia & subsp. oxycarpa, excelsior, pennsylvanica; Juglans regia; Malus domestica; Olea europaea; Quercus robur; Robinia pseudoacacia; Syringa vulgaris.

phenology

Univoltine.

distribution within Europe

(PESI, 2020).

synonyms

Leperesinus fraxini; Hylesinus, Leperisinus, varius (Panzer, 1799).

references

Buhr (1964a), Compte (1981a), Dauphin & Aniotsbehere (1997a), Duffy (1953a), Lombardero (1995a), López Romero, Romón Ochoa, Iturrondobeitia Bilbao & Goldaracena Lafuente (2007a), Lukášová & Zimová (2015a), Marković & Stojanović (2015a), Mifsud & Knížek (2009a), Munroe (1926a), Nikulina, Mandelshtam, Petrov, ao (2015a), Roskam (2019a), Schedl (1980a).

Last modified 15.xi.2020