Octochaetona Michaelsen, 1922

  • Male pores paired on xviii in seminal grooves, prostatic pores paired at the ends of seminal grooves on xvii and xix.
  • Lumbricine.
  • Oesophagus with a single gizzard in vi or in a space between septa iv/v and vii/viii or viii/ix or ix/x.
  • One pair of discrete extramural asymmetrical calciferous glands opening into gut close to the attachment of septum v/vi.
  • Prostate paired in xvii and xix extending posteriorly to a few segments.
  • Supra-intestinal gland absent.
  • Typhlosole lamelliform, bifid ventrally.
  • Megameronephridia absent.
  • Penial setae present.
  • Spermathecae paired in viii ad ix and diverticulate.
  • Fifteen species recorded in India viz.,

S. No Species Type locality Nature
1. albida Kurnool, Andhra Pradesh, India Endemic
2. barkudensis Barkuda Island in Chilka Lake, Odisha, India Endemic
3. barnesi Horsleykonda (Horsley Hills, Yenugulla Mallama Konda), Andhra Pradesh, India Endemic
4. beatrix Calcutta (Kolkata), West Bengal, India Endemic
5. compta Nellore, Andhra Pradesh, India Endemic
6. excavata Horsleykonda (Horsley Hills, Yenugulla Mallama Konda), Andhra Pradesh, India Endemic
7. maindroni Gingi (Gingee), Tamil Nadu, India Endemic
8. paliensis Palia, Madhya Pradesh, India Endemic
9. parva Nellore, Andhra Pradesh, India Endemic
10. pattoni Madras (Chennai), Tamil Nadu, India Endemic
11. phillotti Hyderabad, Telangana, India Endemic
12. prashadi Kalayan (Kalyan), Maharashtra, India Endemic
13. serrata Madras (Chennai), Tamil Nadu, India Endemic
14. surensis Sur (Sar or Sara) Lake in Puri, Odisha, India Endemic
15. thurstoni Madras (Chennai),Tamil Nadu, India Endemic