The genus Podonychus is currently known to inhabit only Indonesia and Kyushu, Japan, representing a disjunct distribution across the equator. The reason for this disjunctive distribution is unknown at ...
The family Elmidae (riffle beetles) is well studied and the existence of 17 genera with 57 species have been reported in Japan so far. The genus Podonychus Jäch & Kodada, 1997 (Elminae, Macronychini) ...
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