Front cover: Photos show the eggs (A), nymph (B, C), adult (D) and male reproductive system (E) of Gampsocleis gratiosa Brunner von Wattenwyl (Orthoptera, Tettigoniidae). The species is a famous song insect, commonly known as katydid, and is distributed in North, Northeast and Northwest regions of China. It has a large body and can be reared easily. In recent years, it has been used as a model organism for studying structure and physiochemical mechanism of Tettigoniidae. In this issue (pp. 1162-1170), a study on the dynamics of the nucleus during spermiogenesis in Gampsocleis gratiosa is reported. These photos were all taken in Laboratory of Tettigoniidae of the College of Life Sciences, Hebei University. Photos A, B and C were taken from April to May 2014 by KOU Xiao-Yan and photo D was taken in August 2014 by WANG Xin, respectively. Photo E showing the anatomy of the male reproductive system was taken by CHANG Yan-Lin in June 2010.