TAKAO 599 MUSEUM

Treasures of Mt. Takao

Mt. Takao is considered one of the three major habitat of insects along with Minoo (Osaka prefecture) and Kibune (Kyoto prefecture) and it has long been loved by researchers of insects because of number of species and the easy access from the Metropolitan area. There are many insects first found in Mt. Takao and named after "Takao" such as Takao Shachihoko (Hiradonta takaonis Matsumura) and Takao medaka kamikiri (Stenhomalus takaosanus).

Biston robustus
Biston robustus 尺蛾科
Main region: Hokkaido, Honshu, Shikoku, Kyushu, Izu Islands, Tsushima and Nansei Islands.
Found in woods and green spaces from flatlands to low elevations.
Wing colors is gray to brown like with bark-like patterns that is difficult to find when resting on trees. There are a lot of moths like these patterns but some could be recognized with paired patterns and unnatural depth on trees.
This species are large in geometridae family and seen from March to April.
Male are often attracted to lights.
Caterpillars are inchworms resembling tree branches and feed on leaves of various kinds of plants including apple, pairs, camellia, Japanese chestnuts, quercus acutissima and quercus serrata.

●Wingspan  about 40 to 75 mm
●Adult Flight Season  May to about April
※Quotation from Mount Takao formula application
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