Gonatopus ruficornis Dalman, 1818: 83.
Material examined. Lectotype (Ƥ) and paralectotypes (3 Ƥ) (designated by Olmi 1984) of L. ruficornis: Sweden, Västergötland [NHRS]. Shaanxi: Foping County, 3.VI. 1996, Linaxi Xing coll., 2 3 [ZJUC].
Hosts. Cicadellidae (Guglielmino & Olmi, 1997): in United Kingdom: Conosanus obsoletus (Kirschbaum); Euscelis incisus (Kirschbaum); Mocydia crocea (Herrich-Schäffer); Elymana sulphurella (Zetterstedt); Macrosteles laevis (Ribaut); Arthaldeus pascuellus (Fallén); Jassargus distinguendus (Flor); Jassargus flori (Fieber); Psammotettix cephalotes (Herrich-Schäffer); Psammotettix confinis (Dahlbom); Psammotettix nodosus (Ribaut); in Germany: Streptanus sordidus (Zetterstedt); in Italy: Jassargus alpinus (Then); Jassargus bisubulatus (Then); in Poland: Errastunus ocellaris (Fallén); Jassargus obtusivalvis (Kirschbaum).
Distribution. Palaearctic. Western Europe, Japan, Kazakhstan, Kyrgyzstan, Mongolia, North Korea, Russia (Siberia, Kuril Islands, Sakhalin) (Olmi 1984, 1999, 2004; Ponomarenko & Olmi 2006), China: Shaanxi (new record).