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Nematodes


Oxyurids (pinworms)

Passalurus ambiguus
Esophagus and posterior bulb
(jackrabbit)

Thelastoma collare
male with lateral alae
(desert millipede)

Thelastoma collare
female lip bulb
(desert millipede)

Eggs of the human pinworm, Enterobius vermicularis
(brightfield and interference contrast photos)




Ascaris eggs (Nematoda, Ascaridida)

fertilized, corticated eggs
fertilized, decorticated eggs
unfertilized or otherwise non-viable eggs




Trichuris

Eggs of four enoplean nematodes
(all same magnification)

Capillaria sp.
feces of red-tailed hawk

Eucoleus aerophila (?)
feces of badger

Trichuris muris
feces of Neotoma micropus

Trichuris vulpis
feces of dog



Ancylostoma (Nematoda, Ancylostomatoidea)

Ancylostoma caninum
(dog)
oral armature

Ancylostoma caninum
(dog)
intestinal section

Ancylostoma taxideae
(badger)
eggs in feces