Plant Parasites of Europe

leafminers, galls and fungi

Leptoglossus occidentalis

Leptoglossus occidentalis Heidemann, 1910

western conifer-seed bug

on conifers


By its size a conspicuous bug, living from sap of cones, in particular the developing seeds. This leads to premature death and fall of young cones and mortality of the seeds.

host plants

Cupressaceae, Pinaceae, narrowly polyphagous

Cedrus libani; Juniperus excelsa; Pinus brutia, pinea; Pseudotsuga menziesii.

distribution within Europe

(PESI, 2020).


North American species, since 1999 in Europe, that quickly has become an important pest in pine seed cultivation.


Bracalini, Benedettelli, Croci ao (2013a), Fent & Kment (2011a), Nemer, El Khoury, Noujeim ao (2019a).

Last modified 6.iii.2020