Anopla

…Generally, they have a strong regenerative ability, and although their bodies are easily cut when stimulated, they regenerate back to their original state. The phylum Nemertea is broadly divided into two classes, Anopla, which has no needles on its snout, and Enopla, which has one or many needles, and there are approximately 1,400 species known worldwide. In Japan, there are more than 110 species, including the tapeworm, the green worm (illustration), the spotted worm, and the vertical-striped worm. …

*Some of the terminology explanations that mention "Anopla" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…一般に再生力が強く，刺激によって体を容易に切るが，また元の体に再生する。　紐形動物門は吻に針をもっていない無針綱Anoplaと1個あるいは多くの針をもつ有針綱Enoplaの2綱に大別され，世界で約1400種が知られている。日本にはサナダヒモムシ，ミドリヒモムシ（イラスト），マダラヒモムシ，タテジマヒモムシなど110種以上が分布する。…

※「Anopla」について言及している用語解説の一部を掲載しています。

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