Limnobaris albosparsa Reitter 1910

Small size (2.7–3.2 mm) and scattered, squamiform, appressed setae on the elytron make Limnobaris albosparsa a distinctive species around the Eastern Sea (Sea of Japan). The aedeagus is identical to that of the more southern Limnobaris tibialis except for its somewhat wider base (Fig. 10 vs. Yoshihara and Morimoto 1994: 451), and the two species usually have a sharply pointed tooth on the ventral edge of the male protibia (Fig. 5). However, they are allopatric (Fig. 13) and Limnobaris tibialis has erect rather than appressed setae on the elytron. Other small species, like Limnobaris basalis, Limnobaris elliptica and Limnobaris martensi, have a blunt male protibial tooth and lack scattered squamiform setae on the elytron.

The species has been reported from Japan (Honshu), Russia (Khabarovsk and Primorsky krajs) and South Korea (Reitter 1910, Egorov 1976, Yoshihara and Morimoto 1994, Hong et al. 2000, 2011, Legalov 2009). It may occur also in the Chinese provinces Heilongjiang and Jilin (Fig. 13).