Rev 03/06/2023

  Classification Biology and Ecology
Morphology and Anatomy Life Cycle
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Suifunema Chitwood, 1932

Type species of the genus: Suifunema caudelli Chitwood, 1932

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Morphology and Anatomy:



  • Mouth opening prismoidal, lips offset, 8 submedian labiopapillae;
  •  amphidspresent.
  • Esophagus tripartite, cylindrical or posteriorly swollen  anterior corpus, isthmus set offrom corpus and from posterior valvular bulb.
  • Nerve ring encircles corpus or isthmus.
  •  Excretory pore between base of esophagus and anterior extremity of ovary.
  •  Vulva anteriad, appro ximately 25-40% of body length from anterior end, leading to muscular ovijector.
  • Didelphic, both ovaries originate in anterior part of body.
  •  Eggs oval, or ovoid with one side flattened, with operculum.
  •  Tail short,bluntly rounded or slightly conical,with a filiform projection


  • Much smaller than females.
  • Body broadest at abot 75% of body length from anterior
  • Esophagus indistinct.
  • Monorchic, testis outstretched.
  • Tail round, with short filiform projection, 4 pairs of genital papillae (3 pairs ventro-lateral, 1 pair dorso-lateral).
  • Single spicule.

Ref; Zervos, 1987

Body size range for the species of this genus in the database - Click:

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A genus of intestinal parasites of cockroaches; Females, males, and juveniles found in hind gut of cockroaches.

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Biology and Ecology:

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Life Cycle:

For Ecophysiological Parameters for this genus, click 
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Ecosystem Functions and Services:


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Camino, N.B., de Villalobos, C. 2013. A new species of Protrellus Cobb, 1920 (Nematoda, Thelastomatidae) parasite of the field cockroach Blatella vaga Hebard, 1919 (Blattodea, Blattidae) from Catamarca, Argentina. Acta Parasitologica, 58: 98-104

Zervos, S. 1987. Protrellus dalei n. sp.. Blatticola barryi n. sp., and Suifunema mackenziei n. sp., thelastomatid nematodes from New Zealand cockroaches. N.Z. Journal of Zoology 14:239-250.

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Copyright © 1999 by Howard Ferris.
Revised: March 06, 2023.