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).
Main Region: Honshu, Shikoku, Kyushu, Okinawa, Sado Island, Yaku Island, Ishigaki Island and Iriomote Island.
Common Grass Yellow is the different species found in south of Nansei islands.
Found in sunny grassland and forests from flatlands to mountains.
Is seen from early spring of about March and found even at parks in Tokyo.
Wing color is generally yellow on both sides and male is deeper yellow and female is lighter yellow.
Have black colored edges.
Some have black spots on the back of wings but some do not.
Fly over sunny grasslands or forests and feed on nectar of bush clover, cisium and bidens.
Caterpillars feed on plants in fabaceae family including mimosa.
Wingspan about 35 to 45 mm
Adult Flight Season March to about November
Common Grass Yellow is the different species found in south of Nansei islands.
Found in sunny grassland and forests from flatlands to mountains.
Is seen from early spring of about March and found even at parks in Tokyo.
Wing color is generally yellow on both sides and male is deeper yellow and female is lighter yellow.
Have black colored edges.
Some have black spots on the back of wings but some do not.
Fly over sunny grasslands or forests and feed on nectar of bush clover, cisium and bidens.
Caterpillars feed on plants in fabaceae family including mimosa.
Wingspan about 35 to 45 mm
Adult Flight Season March to about November