Hylastinus obscurus (Marsham, 1802)

clover root rot/ borer; gorse bark beetle

on Fbaceae

parasite

Both the larvae and the beetles make long galleries in the roots, that very soon start to rot. Houard writes that the flowers turn green, but according to Stickney attacked plants shown no aboveground symptoms

host plants

Fabaceae, oligophagous

Cytisus scoparius; Medicago sativa; Melilotus albus; Onobrychis viciifolia; Ononis natrix; Pisum sativum; Trifolium hybridum, incarnatum, medium, pratense, repens; Ulex europaeus.

distribution within Europe

(PESI, 2018).

larva

Hylastinus obscurus larva

from Stickney (1916a)

references

Dauphin & Aniotsbehere (1997a), Houard (1909a), Stickney (1916a).

mod 23.viii.2018