This photo shows a worker of Bombus terrestris (Hymenoptera: Apidae) pollinating Allium cepa (Liliaceae). Bumblebee is an efficient pollinator and widely used in fruit and vegetable production and crop breeding. In this issue, a study of toxicity and risk assessment of sulfoxaflor, spinetoram and their mixture to Bombus terrestris was reported (pp. 809-816). Photo by ZHOU Hao at the Improvement Center for Vegetable, Shandong Academy of Agricultural Sciences, Jinan on May 20, 2016.