Mehratrema militaris     (Marine Worm)
Organism information awaits expert curation
Class: Trematoda

Image copyrights: Government of India

Size: Length: 0.83-1.26 mm.
Width: 0.19-0.36 mm.

Body elongate, small, tegument smooth. Ventral sucker preequatorial, 0.09-0.11 mm in diameter, situated at 0.48-0.56 mm from anterior end of body. Oral sucker terminal, 0.08-0.15 mm long, 0.09-0.11 mm wide, sub-equal to ventral sucker. Sucker ratio 1:0.9.

Prepharynx absent, pharynx muscular, 0.04-0.06 mm long, 0.04-0.05 mm wide. Oesophagus short; intestinal caeca extending upto a little anterior to posterior end of body.
Testes two, symmetrical, right testis 0.09-0.11 mm long, 0.06-0.12 wide, left testis 0.09-0.12 long, 0.06-0.10 mm wide, entire, anterodorsal to ventral sucker. Cirrus sac well developed, enclosing vesicula seminis interna, pars prostatica surrounded by prostate gland cells.
Ovary entire 0.07-1.28 mm long, 0.05-0.08 mm wide, equatorial, pretesticular. Seminal receptacle present. Vitellaria follicular placed laterally on both sides of body, distributed from posterior end of testes to posterior end of intestinal caeca. Uterian coils posterior to ventral sucker. Eggs 36-49 µm x 20-24 µm.
Excretory vesicle 'V' shaped.

Synonym (s)

Common Name (s)
Economic Importance and Threats



• Orissa, Chilika Lake INDIA

Literature Source(s)
  • Dutta, IB (1995) Platyhelminthes: Trematoda: Digenea Wetland ecosystem series 1: Fauna of Chilka lake ZSI, Calcutta 235-277 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:2010-10-07

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