Also known as: Equine lungworm
Donkeys, and occasionally horses.
D. arnfieldi are of the superfamily Trichostrongyloidea. Adults are slender, thread-like and white. Females are larger than males at around 6.5cm in length. The males have a small non-lobulated bursa.
The embryonated eggs are 80-100µm in length.
The lifecycle is not greatly known, but it is currently thought to be similar to that of Dictyocaulus viviparus.
The prepatent period is 2-3 months.
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