Hemicriconemoides rosae




Rev 11/21/2019

Sheathoid Nematode Classification Hosts
Morphology and Anatomy Life Cycle
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           Hemicriconemoides rosae Rathour, Sharma, Singh & Ganguly, 2003

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Morphology and Anatomy:

  • Cuticular sheath attached at anterior end and vulva and well separated on tail.
  • Body annuli distinct and rounded, 3-4 μm wide in mid-body region.
  • Lateral field absent and anastomoses lacking.
  • Lip region not set off, rounded with a prominent labial disc and two annuli.
  • Cephalic framework well developed and moderately sclerotised.
  • Stylet long, well developed, ca 51-61 μm long (covering 14-16 sheath annuli). Conus about 86% of stylet length.. Stylet knobs well developed, anchor-shaped, 5-7 μm wide.
  • DEGO 2.0-2.5 μm posterior to stylet base.
  • Procorpus and metacorpus amalgamated. Median bulb with well-developed valve. Isthmus small and narrow followed by distinct basal bulb.
  • Secretory-excretory pore posterior to basal bulb, 22-30 annuli from anterior end.
  • Female gonad monodelphic, prodelphic, outstretched with oocytes arranged in a single row.
  • Vagina distinct, straight to sigmoid, anteriorly directed.
  • Vulva posterior, located 7-9 annuli from terminus and at about 90-93% of body length, distinct slit-like,without vulval flap but with a prominent membranous sheath.
  • Spermatheca well developed, oblong to ovoid-shaped, without sperm.
  • Anus obscure.
  • Tail conoid, convex dorsally, tapering gradually to a slightly narrower rounded or more pointed tip.
  • Male Not found.

Ref: Khan et al., 2019.


Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

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Common in sugarcane fields and associated with roses in Uttar Pradesh, India.


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Economic Importance:

Abundant in sugarcane fields and rose production systems in Uttar Pradesh, India and, although controlled experiments have not been conducted, economic damage is likely (Khan et al., 2019)


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Ectoparasite of plant roots

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For an extensive host range list for this species, click


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Life Cycle:

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click If species level data are not available, click for genus level parameters
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Host Plant Resistance, Non-hosts and Crop Rotation alternatives:

For plants reported to have some level of resistance to this species, click



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Khan, M.R., V. Phani, K. Chauhan, V.S. Somvanshi, R. Pervez and R.K. Walia. 2019. Redescription and molecular characterisation of Hemicriconemoides rosae Rathour, Sharma, Singh & Ganguly, 2003 from rhizosphere of sugarcane in India. Nematology 21:767-778

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Copyright 1999 by Howard Ferris.
Revised: November 21, 2019 .