Kleidocerys resedae (Panzer, 1797)

birch catkin bug

on Betula, etc.

Haarlemmermeer, 23.vii.2022 © Laurens van der Linde: larvae on birch catkin

Hoofddorp, 13.ix.2020 © Laurens van der Linde

Betula pendula, Hungary, Budapest, arboretum, 21.v.2017 © László Érsek

Betula pendula, Hongarije, Mosonmagyaróvár, 1.vii.2013 © László Érsek: infested birch catkins

different stages

Betula pendula, Hungary, Budapest, arboretum, 31.vii.2020 © László Érsek: larva

imago

detail

imago, underside

detail

Corylus avellana, Hungary, Budapest, arboretum, 31.vii.202o © László Érsek: agregation on an alien host plant

parasite

Larvae and adults suck at the fruits, seeds.

host plants

Betulaceae, oligophagous

Alnusglutinosa, viridis; Betula pendula, pubescens.

At high densities also on other plants, like Acer negundo, platanoides; Amelanchier; Berberis thunbergii; Calluna vulgaris; Chamaecyparis lawsoniana; Corylus avellana; Fagus grandifolia; Ipomoea; Ligustrum vulgare; Oenothera biennis; Populus nigra; Prunus cerasus, serotina; Quercus rubra; Reynoutria japonica; Rhododendron ferrugineum, hirsutum, tomentosum; Salix babylonica; Sambucus nigra; Spiraea alba, crenata, x vanhouttei; Syringa vulgarisl Thuja occidentalis, plicata; Tilia cordata, platyphyllos; Typha angustifolia, latifolia; Verbascum thapsus.

distribution within Europe

PESI (2021).

synonyms

Ischnorhynchus resedae.

references

Akkermans & Vergoossen (2023a), Aukema & Heijerman (2026a), Baugnée (2003c), Baugnée & Chérot (2004a), Cobben (1951a), Dioli (1980a. 1997a), Kment & Baňař (2012a), Larson & Scudder (2018a), Malenovský, Baňař & Kment (2011a), Meijer, Smit, Beukeboom & Schilthuizen (2012a), Péricart (1998a), Rabitsch (2004a), Skora, Lis & Wolski (2013a), Spuņǵis (2008a), Tolsgaard & Jensen (2010a), Wheeler-Jr (1976a), Yazici, Yildirim & Moulet (2015a).