Kususan (Camphor silkworm) - Kususan (English spelling) Dictyoploca japonica

Japanese: クスサン(樟蚕) - クスサン（英語表記）Dictyoploca japonica

An insect of the Lepidoptera family, Saturniidae (illustration). It is commonly found throughout Japan, and in some areas it is called Shiragataro because its larvae are covered with long white hairs. It is a large moth with a wingspan of about 10 cm. It parasitizes a great many plants, including oak, konara oak, cherry, plum, peach, apple, pear, persimmon, and sumac, and can also appear on ginkgo trees, which are not prone to other pests. It is also called chestnut caterpillar because it often appears in chestnut forests. The eggs laid in a compacted state on the trunks hatch in the spring and go through seven instars, then make a hard, oval, mesh-like cocoon in early summer to pupate.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

鱗翅目ヤママユガ科の昆虫（イラスト）。日本全国にごくふつうに見られ，幼虫は白色の長毛に覆われているため，一部の地方ではシラガタロウと呼ばれている。大型のガで，開帳10cm内外。クヌギ，コナラ，サクラ，ウメ，モモ，リンゴ，ナシ，カキ，ヌルデなどひじょうに多くの植物に寄生し，他の害虫があまりつかないイチョウに発生することもある。クリ林によく発生するところから，クリケムシと呼ばれることもある。樹幹にかためて産みつけられた卵は春に孵化（ふか）して7齢を重ね，夏の初めに楕円形の固い網目状の繭をつくって蛹化（ようか）する。

出典　株式会社平凡社世界大百科事典第２版について　情報

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