Japanese Stick Insect

Ramulus mikado is the best-known stick insect in Japan, found from Honshu south of Miyagi and Niigata through Shikoku and Kyushu, and often called simply nanafushi. Females measure 74-100mm and males 57-62mm, though males are so rare that only a handful have been found. It is frequently confused with Phraortes elongatus, but its antennae are short where that species has long ones. Like many phasmids it reproduces by parthenogenesis, the female laying without mating; every nymph is female and genetically identical to its mother. A joint study by the National Institute for Basic Biology, Kobe University and Fukushima University found that the rare males, while normal in form and behaviour, have entirely lost their reproductive function. The eggs resemble plant seeds in shape and size and are covered by a hard shell, taking from thirteen days to more than seventy, on average twenty to thirty, to hatch.

Source: Wikipedia (CC BY-SA 4.0)

Japanese Stick Insect的寿命为雌成虫4～6个月 / 雄成虫3～4个月。

Japanese Stick Insect的成体体型为Males 57-62mm (only a few records), females 74-100mm。