Duwal et al., 2014b (key Korean spp.); Günther & Strauß, 2009 (key European spp.); Josifov, 1989 (key to European species); Ribaut, 1921a (key to European species); Yasunaga & Duwal, 2016a (checklist Japanese spp., distr.).
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Duwal et al., 2014b (key Korean spp.); Günther & Strauß, 2009 (key European spp.); Josifov, 1989 (key to European species); Ribaut, 1921a (key to European species); Yasunaga & Duwal, 2016a (checklist Japanese spp., distr.).
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