Vipera aspis (English spelling)

Japanese: Vipera aspis（英語表記）Viperaaspis

...Among the cobras that appear in stories, the asp is famous for being connected to the death of the Egyptian queen Cleopatra, who is said to have ended her life by having a poisonous asp snake bite her ample breasts. Today, the snake called an asp is the Vipera aspis , a member of the Vipera genus, and not the Egyptian cobra that Cleopatra is said to have used. However, in ancient Egypt, the snake itself was called an asp, and even in historical paintings featuring Cleopatra, G. Ferrari and others drew cobras, while G. Reni and others drew vipers. ...

From the European Viper

… [Takahiro Matsui]. …

*Some of the terminology that mentions "Vipera aspis" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…物語に登場するコブラでは，エジプトの女王クレオパトラの死にまつわるアスプaspが有名で，女王は毒蛇アスプにみずからの豊かな胸をかませて命を断ったともいわれている。現在ではアスプと呼ばれるのはクサリヘビ属のアスプクサリヘビVipera aspisであり，クレオパトラが用いたとされるエジプトコブラではない。しかし古代エジプトではヘビそのものをアスプと呼び，クレオパトラを画題とした歴史画でも，G.フェラリらはコブラを，G.レーニらはクサリヘビをかいている。…