Copulation of Rhaetus Westwoodi Kazumiae which is a luxury insect.
It's traded in 4,000 US dollars in Japan. (They aren't 400 US dollars. They're 4,000 US dollars!)
I have been frantic and have begun photography because I began to copulate in the pairing first day and moreover several minutes.
It isn't included in the female interior of the body, but a copulation container contains a seminal duct tightly.

超高級虫のウエストウッディ カズミアエの交尾です。
ペアリング初日、しかも数分で交尾開始したため、大慌てで撮影を開始しました。
オスが体長50cm程度でかなり小さいため顎の内歯が完全に消滅しております。
メスの足元にあるヒモはミズコケです。