Parastrongyloides scottgardneri

 

Contents

 

Rev 11/19/2025

  Classification Biology and Ecology
Morphology and Anatomy Life Cycle
Return to Parastrongyloides Menu   Ecosystem Functions and Services
Distribution Management
Return to Strongyloididae Menu Feeding  References
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Classification:

Class:    Chromadorea
SubOrder: Rhabditia
Order:    Rhabditida 
Suborder: Tylenchina
Superfamily Strongyloidoidea
Family:  Strongyloididae

  Parastrongyloides scottgardneri Guerrero, 2020

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Morphology and Anatomy:

General characteristics

 
 

Males:

  • . Testis long, beginning 45, 52 (9–107 ± 31.5) posteriorly to esophageal-intestinal junction. Tail subconical, ending with digitiform appendix more or less developed, 30, 27.4 (21–31 ± 2.8) long, 25, 26.4 (21– 33 ± 3.0) wide; one small, median, unpaired papilla 14, 16.7 (7.3–21.8 ± 5.5) anterior to cloaca, 4.5, 4.7 (2.6–7.3 ± 2.1) in diameter. Spicules equal, sickle-shaped, with knoblike proximal ends, pointed distal ends, and ventral alae, clothed in membrane, 38, 39 (33–48 ± 4.8) long, 5.4, 4.12 (3.3–5.1 ± 0.7) wide, alae 3.1, 3.3 (1.4–4.4 ± 0.8) maximum width. Gubernaculum rhomboid in shape with small spike posteriorly 20, 22 (18–29 ± 3.4) long, 14, 15 (13–20 ± 2.3) wide

Female: Two types:,

Type 1 shorter nematodes, 1 mm long:

  • Vulva at about 65% of body length, vulval lips and vagina inconspicuous,
  • Uterus, amphidelphic, the anterior ovary directed anteriad and after junction with ovary and uterus, uterus then directed posteriad to vulva  Tail conical,

Type 2, longer nematodes 1.9 mm long::

  • Vulva at around 65% of body length
  • Tail conical

Ref:: Guerrero, 2020

 


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

 


 
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Distribution:

Described from Ecuador as a parasite of the genus Caenolestes, a small genus of  insectivorous marsupials wuth distributions that include the Ecuadoran Andes (Guerrero, 2020).

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Feeding:

Endoparasites of the small intestine of: Caenolestes convelatus
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Biology and Ecology:

  

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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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Ecosystem Functions and Services:

 

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Management:

 

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References:

Guerrero, R. 2020. Two New Nematodes from the Families Molineidae and Strongyloididae (Nemata): Parasites of Caenolestes (Mammalia: Paucituberculata: Caenolestidae) from the Andes of Ecuador. MANTER: Journal of Parasite Biodiversity (ISSN 2470-8224) Occasional Papers, Number 13, March 2, 2020.

 

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Copyright © 1999 by Howard Ferris.
Revised: November 19, 2025.