The discovery place is shown as Ryusenkyo (竜仙峡) in the both labels of these first specimens. The active habitable home of this small beautiful Lycaenidae locates around an old retired bus stop 'Ryusenkyo-guchi' in the right side of Aigawa river's middle reach area, 1km south of kurumatsukuri-oohashi bridge across this river. This precious natural area of this Mt. Ryuouzan region will be destroyed and submerged by the construction of Aigawa-dam, that situated on the lower middle reaches (Ibaraki-shi,shobo) southern of Ryusenkyo. And the same upper tributary streams, called Shimo-otowagawa-keikoku valley, which is also in the part of Ryusenkyo, is saved from submergence by this dam project. But unfortunately the area is under the construction of Daini-meishin expressway to move on the destruction of the forestial environment. And present, Aigawa-dam preject is moving very carefully by public policy, so this few in number habitat of S. takanonis at Ryusenkyo area will be almost safety by the submergence. I hope the active natural environment for these rare butterflies and all aquatic organism are preserved as much as possible. Because Ryusenkyo(Ibaraki-shi Kurumatsukuri) is a precious undeveloped good woodland near populated Osaka-city area, from Umeda station in only 1hour.

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