Section 2 of 3
Materials and methods
Bing Zhang, Jun Yan, Yue Ning, Pin Liu, Minfei Yan, Qingming Liu, and Ding Yang · about 1 minutes
The specimens were examined and illustrated using a ZEISS Stemi 2000-c stereomicroscope. Details of their colouration were checked in specimens immersed in 75% ethyl alcohol. Male genitalia were prepared by macerating the apical portion of the abdomen in cold 10% NaOH for 12–15 h. After examination, the genitalia were transferred to fresh glycerol (C3H3O3) and stored in a microvial pinned beneath the respective specimen. The studied specimens are deposited in the Entomological Museum of China Agricultural University (CAU), Beijing, China. Some type and non-type material H. (E.) chrysomela (Edwards, 1921) used in this paper were borrowed from the Natural History Museum, London, UK (NHMUK).
The terminology used for the wing veins follows the interpretation of Cumming and Wood (2017) and Jong (2017). The terminology for the male terminalia follows that of Ribeiro (2006, 2008).