Johniophyllum skrjabini     (Marine Worm)
Organism information awaits expert curation
Class: Trematoda

Image copyrights: Government of India

Size: Length: 1.92 mm.
Width: 0.49 mm.

Body small, elongate without ecsoma. Tegument without cuticular serration. Ventral sucker round, 0.32 mm in diameter, situated 0.70 mm from anterior end of body. Oral sucker subterminal, 0.14 mm in diameter, round, smaller than ventral sucker. Sucker ratio-1:2.28.

Prepharynx absent; pharynx well developed, 0.08 mm long, 0.07 mm wide, oesophagus short. Intestinal caeca extending upto posterior end of body.
Testes two, left testis 0.16 mm long, 0.15 mm wide, right testis 0.14 mm long, 0.17 mm wide, symmetrical, oval, postacetabular. Seminal vesicle saccular, hermaphroditic duct long, muscular without pouch pars peostatica and prostate gland cells not distinctly differentiated. Genital opening near pharynx.
Ovary post-testicular, 0.16 mm long, 0.25 mm wide, entire. Seminal receptacle near ovary. Vitellaria postovarian, consisting of seven tubular lobes. Uterus mostly in hind body. Eggs 8-12 µm x 8-9 µm.
Excretory arms united near oral sucker.

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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