Spauligodon bintangensis		Contents		Rev 14-11-2024
Pinworm; Threadworm		Classification
		Morphology and Anatomy		Life Cycle
Return to Spauligodon Menu		Distribution		Ecosystem Functions and Services
		Feeding		Management
Return to Oxyuridae Menu		Biology and Ecology		References
Return to Pharyngodonidae Menu		Go to Nemaplex Main Menu		Go to Dictionary of Terminology

Classification:

Chromadorea
Chromadoria

           Rhabditida 

                       Spirurina

                          Oxyuroidea

                   Oxyuridae or Pharyngodonidae

Pharyngodononae

 

            Spauligodon bintangensis Bursey, Goldberg, & Grismerm, 2014

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Morphology and Anatomy:

General characteristics:

• Small cylindrical nematodes,
• Sexually dimorphic, males approximately 25%  length of female; lateral alae present in male, absent in female.
• Anterior extremity tapered, mouth surrounded by 3 small lips, each with shallow midline indentation; dorsal lip with 2 sessile papillae, ventrolateral lips with 2 sessile papillae and 1 prominent lateral amphid.
• Cuticle with distinct transverse striations, faint longitudinal striations

Male:

• Lateral alae beginning behind lips, gradually increasing in width to 40 um at midbody, and maintaining width to terminus just anterior to precloacal papillae.
•  Esophagus with terminal bulb.
•  Nerve ring 119 um and excretory pore 409 um from anterior end, respectively.
• Cloaca with prolonged anterior and posterior lips; anterior lip pectinate, posterior lip beaklike.
• Single tubular testis reflexed just posterior to excretory pore..
• Spicule absent.
• Caudal alae creating bursa at level of cloaca.
• Three pairs of mammiliform papillae, 1 pair precloacal, 1 pair postcloacal, ventrolaterally directed, both enclosed by caudal alae; third pair on base of tail filament, not enclosed by caudal alae.
• Tail filament aspinose.

Female:

• Nerve ring um, excretory pore 710 um, and vulva 787 um from anterior end, respectively.
• Anus 232 um anterior of tail filament insertion.
• Didelphic - uteri parallel, extending to posterior end of body and folding back upon themselves to join oviducts. Oviducts and ovaries fold remaining parallel to each other in middle half of body.
• Thick-walled muscular ovijector extending posteriorly
• Egg barrel shaped with polar plug at 1 end, slightly flattened on 1 side, egg surface punctate.
• As body fills with eggs, intestine becomes less apparent; when egg load extends body diameter.
• Tail filament spinose with 1 to 4 cuticular spines near midpoint.

Ref: Bursey et al., 2014

Spauligodon bintangensis (1) Female, anterior, lateral view. (2) Female, en face view. (3) Egg. (4) Male, entire, ventral view. (5) Female, posterior, lateral view. (6) Male, posterior, ventral view. (7) Male, entire, lateral view. (8) Male, entire, lateral view, internal organ arrangement Drawings from Bursey et al., 2014
Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

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Distribution:

Described from type host Cyrtodactylus bintangrendah (Bintang lowland bent-toed geckoes) which are presumed to range in lowland forests up to 450 m elevation throughout foothills and lower slopes surrounding the Bintang Mountain Range, Peninsular Malaysia (Bursey et al., 2014)

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Feeding:

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Hosts:

Bintang lowland bent-toed geckoes, Cyrtodactylus bintangrendah

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Life Cycle:

Ecophysiological Parameters:

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Copyright  1999 by Howard Ferris.
Revised: November 14, 2024.