Labiobulura peramelis

Labiobulura peramelis	Contents	Rev 07/07/2025
	Classification	Hosts
	Morphology and Anatomy	Life Cycle
Return to Labiobulura Menu	Economic Importance	Damage
	Distribution	Management
Return to Subuluridae Menu	Feeding	References
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Subuluroidea

Subuluridae

Labiobulurainae

Labiobulura peramelis (Baylis, 1930) Mawson, 1960

Type species of the genus

Synonyms:

Morphology and Anatomy:

Robust medium-sized nematodes
Cuticle with annulations; cervical alae wide.
Mouth opening bounded by 6 labial lobes, 4 triangular submedians, each with double papilla below base, 2 laterals longer, rectangular, blunt proximal ends, each with amphid on base; 4 rectangular interlabial with narrowed bases, 2 triangular interlabia without papillae, oriented 3 dorsally, 3 ventrally; proximal end of each lateral lobe and the rectangular interlabial lobes with irregularly trilobed denticle.
Buccal capsule cylindrical, separated from pharyngeal portion by fine transverse ridge, pharyngeal portion of the buccal apparatus as wide or wider than long.
Pharyngeal lobes cuticularized; 3 larger rectangular chordal lobes, 3 smaller bifid radial lobes, project anteriorly into buccal cavity; not extending to base of buccal capsule. Chordal and radial lobes neither helical nor spiral; peripheral lobes form cup for chordal and radial lobes.
Esophagus widens gradually to terminal bulb; nerve ring surrounds anterior esophagus; excretory pore posterior to nerve ring

Ref: Smales, 2009

Labiobulura peramelis 64: male anterior; 65: cephalic end, en face; cephalic end, lateral view; 66: cephalic end dorso-ventral view; 67: cephalic end lateral view
Scale bars: 65=25 um; 66,67=50 um
Drawings from Smales, 2009

Males:

Spicules similar, slender with longitudinal ridge, transverse striations along one edge,
Gubernaculum with sides extending anteriorly
Tail ca 200 um long.
Sucker pre cloacal, elongate, without cuticular elaborations
11 pairs caudal papillae, 3 pairs pre cloacal, 2 pairs at level of cloaca, 6 pairs post cloaca

Females:

Vulva simple, unornamented, at about 38% of body length from anterior end 400â€“560 um long.
Eggs embryonated, thin shelled, sub globular

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

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Distribution:

Widesptread in Queensland and Northern Territory of Austratio in the hosts Isoodon macrourus (northern brown bandicoot) and I. auratus (golden bandicoot) (Peramelidae).

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Feeding:

Intestinal parasite of Isoodon macrourus (northern brown bandicoot) and I. auratus (golden bandicoot).

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Biology and Ecology:

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Life Cycle:

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:

Smales, L.R. 2009. A review of the nematode genus Labiobulura (Ascaridida: Subuluridae) parasitic in bandicoots (Peramelidae) and bilbies (Thylocomyidae) from Australia and rodents (Murinae: Hydromyini) from Papua New Guinea with the description of two new species. Zootaxa 2009 DOI: 10.11646/zootaxa.2209.1.1