Duwal et al., 2013a (descr., Parapsallus); Henry & Wheeler, 1973 (Plagiognathus); Kerzhner & Josifov, 1999 (Parapsallus); Schuh, 2001 (descr., figs, tax., Plagiognathus); Yasunaga et al., 1999 (distr., fig.).
Distribution
Yasunaga et al., 1999 (Japan); Lodos et al., 2003 (Asian Turkey); Coulianos, 2005 (no records from Estonia); Derzhansky & Matocq, 2005 (Moldavia); X.M. Li & G.Q. Liu, 2010a (China NE); Endrestøl & Ødegaard, 2011 (Norway); Duwal et al., 2013a (South Korea, Japan); Vinokurov & Luo, 2014 (China: NW); Pagola-Carte, 2018a (Spain).