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).

Orthetrum japonicum japonicum
Orthetrum japonicum japonicum Libellulidae
Main region: Hokkaido, Honshu, Shikoku and Kyushu.
Found at watersides of swamps, paddy fields, idle farmlands and ponds from flatlands to low elevations.
Adults fly from spring to early summer.
The abdomen of male adults become bluish white and female body is same as common skimmer but body size of this species is smaller.
It is easy to identify the difference from common skimmers because the abdomen of this species is rather fatty and base of the wings are brownish.

●Length  about 37 to 45 mm
●Adults Flight Season  April to about May
※Quotation from Mount Takao formula application
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