Steinernema tophus sp. n. (Nematoda: Steinernematidae), a new entomopathogenic nematode from South Africa

Harun Çimen, Ming Min Lee, Justin Hatting, Selcuk Hazir, S. Patricia Stock

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


A new entomopathogenic nematode, Steinernema tophus n. sp. is described from South Africa. Morphological, molecular (ribosomal gene sequence data) together with cross-hybridization studies were used for diagnostics and identification purposes. Both molecular and morphological data indicate the new species belongs to the 'g/aseri-group' of Steinernema spp. Key morphological diagnostic traits for S. tophus n. sp. include the morphology of the spicules and gubernaculum. Mor- phometric traits of third-stage infective juveniles, including total body length (average 1,046um), tail length (average 70um), location of the excretory pore (average 92 urn), D% (average 63), E% (average 132) and H% (average 32) values are definitive. In addition to these morphological characters, analysis of rDNA (28S and ITS) gene sequences depict this Steinernema species as a distinct and unique entity.

Original languageEnglish (US)
Pages (from-to)337-353
Number of pages17
Issue number3
StatePublished - Jun 23 2014


  • Cross hybridization
  • Mitochondrial genes
  • Morphology
  • RDNA genes
  • South Africa
  • Steinernema

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology


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