Cover Caption

The endosymbiont Wolbachia is widely distributed among insects. It can manipulate the reproduction of its hosts and affect hosts' other fitness‐related traits as well. Revealing infection status and variation of Wolbachia within the natural populations of rice planthoppers will help understand the diversification, horizontal transmission and host‐associated specialization of the endosymbiont. The research may have implications for the biological control of planthoppers (see pages 329‐344). Here, the result of specific fluorescence in situ hybridization (FISH) detection of Wolbachia in nymph abdomen of the brown planthopper, Nilaparvata lugens (Stål) is showed. The Wolbachia‐specific probes are red and cell nuclei are shown in blue. (Photo provided by Xiao‐Yue Hong of Nanjing Agricultural University, China).