Outside the UK, other species specialise in parasitising terrestrial hosts such as mantids by first being consumed by mosquitos or mayflies. Some species such as Spinochordodes tellinii and Paragordius tricuspidatus infest hosts such as grasshoppers or crickets that feed on vegetation with larvae attached. They are then eaten alongside vegetation or drunk with water by a suitable host which varies between species. When the eggs hatch, the larvae can encyst to survive until they are ingested. In the larval stage, these worms must find an arthropod host to complete their life cycle, often killing the host, making them obligate parasitoids.Įggs are laid in sticky strings underwater or on nearby vegetation depending on the species. AboutHorsehair worms’ adults are free-living in aquatic freshwater or marine environments and capable of moving across damp terrestrial areas.
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