Globocephalus samoensis		Contents		Rev 05/12/2026
Hookworms		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Globocephalus menu				Ecosystem Functions and Services
		Distribution		Management
Return to Ancylostomidae Menu		Feeding		References
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 Classification

Phylum:  Nematoda
Class:    Chromadorea
Order:    Rhabditida 

Superfamily:  Ancylostomatoidea

Family:  Ancylostomidae

Subfamily: Ancylostominae

Globocephalus samoensis Lane, 1922

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Morphology and Anatomy:

• Body rather stout, uticle thick with cuticular transverse striation,
• Mouth directed anterodorsally. Buccal capsule subglobular, with very stout walls, without cutting plates or teeth at the margin, but with a pair of large bicuspid subventral buccal lancets near the base of the capsule
• Excretory pore situated 0.48-0.57 mm from head end

Males:

•  Spicules equal, very fine, rod-shaped, with slight spatulate enlargements at the ends, 0.40-0.48 mm long, with curved tip
• Gubernaculum trapezoid,
• Bursa present; ventral ray cleft at the distal end; three lateral rays divergent and arising from common trunk, abruptly slender at the distal end; externo-dorsal ray arising from the truunk of dorsal ray; dorsal ray bifurcated at about two-thirds, each branch bifurcated at about half,

Females:

• 5.82-6.61 mm long x 0.38-0.52 mm wide
•  Buccal capsule 0.16-0.17 x 0.14-0.16 mm.
• Esophahgus club-shaped; nerve ring 0.43-0.48 mm from head end. Excretory pore 0.51-0.56 mm from head end.
• Tail conical tail with a mucron
• Vulva posterior to mid-body, 3.64-4.30 mm (60.965.7 %) from head end.

Ref: Kagei et al., 1984; Ahn et al., 2015

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Distribution:

Reported from Japan and Korea

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Economic Importance:

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Hosts:

Wild boar, Sus scrofa leucomystax

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Feeding:

Small intestine

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Life Cycle:

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Damage:

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Management:

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References:

Ahn, K-S., Ahn, A-J., Kim, T-H., Suh, G-H., Joo, K-W., Shin, S-S., 2015. Identification and Prevalence of Globocephalus samoensis (Nematoda: Ancylostomatidae) among Wild Boars (Sus scrofa coreanus) from Southwestern Regions of Korea. Korean J. Parasitol. 53:611-618.

Kagei, N., Uga, S., Gondo, M. 1984. On Globocephalus samoensis and G. longemucronatus of wild boar from Hyogo Prefecture, Japan, Japan J. Parasitol. 33:211-214.

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