Agrilus dureli Jendek 2011

Agrilus dureli Jendek, 2011

(Figs 4 A–C)

Examined specimens. CHINA. Beijing. Dingjiatancun env.; 39°59'10"N, 116°01'59"E; 6-2016; alt. 200 m; Adult host: Populus; 1 ♂ (EJCB) // Yanchi env.; 40°01'21"N, 115°50'14"E; 6-2016; alt. 300 m; Larval host: Salix matsudana; 300 (EJCB).

Host plant cited. Larval: Salix matsudana. Adult: Populus.

Biological remarks. In Yanchi (China) (Fig. 4A), the massive infestation and dieback of dozens of mighty Salix matsudana was observed due to outbreak of A. dureli. Both sexes fed and mated on the foliage in crowns of

infested trees. In afternoon, females were observed ovipositing into trunks with thick bark (Fig. 4C). The larvae were boring galleries in the cambium between the bark and wood. Year after an attack, the bark spontaneously peeled off from dead trunks due to the density of galleries (Fig. 4B). The pupal chamber was located in the upper part of wood (at least part of them) and therefore the exit hole was visible when the bark was removed. Adults were able to emerge through the bark 1–3 cm thick. Adults of Agrilus viridis also occurred in smaller amount on the site. A single adult of A. dureli was swept also from Populus in Dingjiatancun (China).