Saccocoelioides chilkaensis     (Marine Worm)
Organism information awaits expert curation
Class: Trematoda

Image copyrights: Government of India

Size: Length: 0.81-1.07 mm long.
Width: 0.32-0.35 mm.

Body small. Tegument spinose on anterior half of body. Ventral sucker equatorial, 0.07-0.09 mm in depth, 0.10-0.11 mm wide, situated at 0.32-0.38 mm from anterior end of body. Oral sucker terminal, conical, 0.07-0.09 mm long, 0.10-0.11 mm wide. Sucker ratio 1:1.

Prepharynx 0.12-0.20 mm long; pharynx muscular, 0.08-0.09 mm long, 0.11-0.12 mm wide; oesophagus short followed by bifurcation. Intestinal caeca short, stumpy, reaching anterior level of testis.
Testis single, entire, 0.18-0.20 mm long, 0.13-0.14 mm wide, situated at posterior end of body. Hermaphroditic sac formed dorsal to ventral sucker, containing saccular internal seminal vesicle, small pars prostatica surrounded with prostate gland cells. External seminal vesicle present, extending up to testis. Genital pore lateral on right side of the body, anterior to ventral sucker.
Ovary entire, small, pretesticular 0.06-0.16 mm long, 0.07-0.15 mm wide. Receptaculum seminis absent. Vitellaria follicular, situated posterior to caecal ends. uterus between ventral sucker and testis. Eggs 53-69 µm x 36-49 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:2010-10-08

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