Euaugaptilus nodifrons   (Sars G.O.,  1905) (Copepod)
Organism information awaits expert curation
Class: Maxillopoda

Size: Female total length 4.8 - 5.75 mm.

The proportional length of the cephalothorax and abdomen are as 61 to 16, so that the abdomen is contained 3.81 times in the length of the anterior region of the body. The cephalic segment is decidedly longer than the thoracic segments together. The head and 1st thoracic segments are separate but thoracic segments 4 and 5 are fused. The posterior thoracic margin is rounded. The forehead is rounded and in the middle line below bears two unequal tuberosities, the upper of which is the smaller, while the lower, over which the chitin is thickened, corresponds to the base of the rostrum. There are no rostral filaments.
The furcal rami are nearly twice as long as broad and bear five setae, of which the outer two arise from the external margin and are considerably shorter than the others. As Sars (1925) notes these outer setae are plumose, while the others appear to be smooth.
The 1st antenna on the right side is unmodified and consists of 24 separate segments, segments 1 and 2 being partially fused. The proximal segments are crowded with large numbers of sensory filaments and the setae arising from the segments are long and slender.

Synonym (s)
Augaptilus nodifrons Sars G.O., 1905
Augaptilus simplex Esterly, 1913

Common Name (s)
Economic Importance and Threats



• Arabian Sea INDIA
• Indian Ocean (Lat: 5.93) (Long: 76.36) (Record: 23/04/1924)
• Kerala, Off Kochi (Lat: 10.43) (Long: 74.54) INDIA (Record: 28/04/1925)

Literature Source(s)
  • Manakadan, R and Pittie, A (2002) Standardized english and scientific names of the Indian subcontinent-2002 Newsletter for Birdwatchers S. Sridhar 42 p 35
  • Hussain, SM Brief report on biodiversity in the coastal areas of Pakistan p 113
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Padmavati, G; Haridas, P; Nair, KKC; Gopalakrishnan, TC; Shiney, P and Madhupratap, M (1998) Vertical distribution of mesozooplankton in the central and eastern Arabian Sea during the winter monsoons Journal of Plankton Research Cambridge University Press 20 343-354 Available at -
  • Sewell, RBS (1999) The copepoda of Indian seas Biotech Books, Delhi, India 407 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -

Page last updated on:2011-09-12

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