Sympycnus flaviantenna Tang, Wang & Yang
Sympycnus flaviantenna Tang et al., 2015: 274 .
Remarks. Sympycnus flaviantenna belongs probably to another genus (M. Pollet, pers. comm. 2017) and consequently it is not included in the key below.
Distribution. Type locality: China: Beijing, Miyun County, Caojialu. Palaearctic: China (Beijing, Hebei, Shaanxi).