Chu, 1969; Carayon, 1972b (class., Xylocorini, Proxylocoris); Kerzhner & Elov, 1976; Péricart, 1972 (monogr.); Reuter, 1884c (monogr., subg. Piezostethus); Tawfik & El Husseini, 1971b (life-history).
Distribution
Halbert, 1935 (Ireland); Bu & L.Y. Zheng, 2001 (China NW); Linnavuori & Hosseini, 2000a (Iran); Carapezza, 2002a (Jordan); Matocq & Özgen, 2010 (Asian Turkey); Carapezza et al., 2014 (Arab Emirates); Heckmann et al., 2015 (Crete); Ostovan et al., 2017 (Iran); Gogala et al., 2018 (Slovenia).