RVC/FAO guide to Veterinary Parasitology
Ruminant eggs: Nematodirus
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Ellipse
Poles sharply curved
2-8 blastomeres surrounded by wide fluid-filled cavity

Nematodirus battus egg

Nematodirus battus

Length 164 µm
Width 72 µm
Shell thin, brown, parallel sides

Nematodirus filicollis egg

Nematodirus filicollis

Length 150 µm
Width 75 µm
Shell thin, colourless

 

Nematodirus helvetianus

Length 212 µm
Width 97 µm
Shell thin, colourless

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