基本介紹
形態特徵,分類,
形態特徵
腎孔位於肛門之前,紡錘肌始自肛門前體腔壁。
分類
有10種,分別是:
- Sipunculus lomonossovi Murina,1968
- Sipunculus longipapillosus Murina,1968
- Sipunculus marcusi Ditadi,1976
- 挪威方格星蟲(Sipunculus norvegicus Danielssen,1868)
- 裸體方格星蟲(Sipunculus nudus Linnaeus,1766)
- Sipunculus phalloides inclusus(Sluiter,1902)
- Sipunculus phalloides phalloides(Pallas,1774)
- Sipunculus polymyotus Fisher,1947
- 強壯方格星蟲(Sipunculus robustus Keferstein,1865)
- 擬安氏方格星蟲(ipunculus angasoides Chen,1963)