Paracomesoma dubium   (Filipjev,  1918) (Marine Worm)
Organism information awaits expert curation
Class: Adenophorea

A-Male head; B-Cloacal region; C-Male tail

Size: Length 1.3-1.4 mm (male); max diameter 37-40 µm (male)

Cuticle smooth without punctation; 6 small labile papillae. 6 anterior cephalic setae; four 5-6 µm posterior cephalic setae; four files of setae upto 3-4 µm long in oesophageal region and numerous short setae on tail but setae sparse in mid-body region. Amphids spiral, of three turns, 6-8 µm wide. Buccal cavity conical with 3 small pointed triangular teeth. Tail distal third cylindrical, spicules long, 170-180 µm in length slender, curved with delicate ventral ala. Gubernaculum small, in three pieces and without apophysis. Spicules slender, curved with delicate ventral ala. Gubernaculum small, in three pieces, without apophysis. A 6µm seta situated 20µm in front of the cloaca.

Synonym (s)
Comesoma dubium Filipjev, 1918
Paracomesoma coronatum Stekhoven, 1950

Common Name (s)
Economic Importance and Threats

Habitat:  Estuarine


• Tamil Nadu, Pichavaram INDIA
• Tamil Nadu, Parangipettai Coast INDIA
• Tamil Nadu, Pichavaram Mangrove (Lat: 11.45) (Long: 79.78) INDIA (Record: 28/01/2002) (Depth: 0.1 mts)

Literature Source(s)
  • Chinnadurai, G and Fernando, OJ (2007) Meiofauna of mangroves of the southeast coast of India with special reference to the free-living marine nematode assemblage Estuarine Coastal and Shelf Science 72 329-336
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Chinnadurai, G and Fernando, OJ (2006) New records of free-living marine nematodes from India Records of the Zoological Survey of India Zoological Survey of India 106(4) 45-54 Available at -
  • Platt, HM and Warwick, RM (1988) Free living marine nematodes part II British chromadorids Linnean society of London and the estuarine and brackish-water sciences association 38 502 pp Available at - NIO, Goa

Page last updated on:2011-08-17

Back to Search