Cover Caption

The brown planthopper (BPH) is the most important insect pest of rice in Asia. This specialist herbivore feeds on the phloem of the rice plant. Heavy infestations of BPH cause ‘hopperburn’, which can result in dramatic yield loss and eventually lead to death of the plant. BPH is dimorphic, with fully winged ‘macropterous’ (blackish‐brown color) and truncate‐winged ‘brachypterous’ (brown color) forms. The macropterous are potentially migrants. Pattern identification of trace elements in BPH bodies is feasible for determining the source area of its immigration. See pages 21–29. Photo provided by Qi‐Yi Tang and Sheng‐Guang Xia.