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Description
The vectors are an exclusively parasitic group of xenonematodes with a ring-shaped adult shape. This shape is a result of a reduction of the outer cuticula to the point the creature turns inside-out and maximizes its absorbing surface inside the host as a result. Aside from the outer skin most of the inner organs save for the reproductive system and often a few neural glands get reduced or absorbed as well. The more primitive, ring-like species often only parasitize in the proximity of the intestinal wall, while the majority has evolved string-like, forking extensions to build up contact with the host's nervous system or bloodstream and control its behaviour with the excretions of the neural glands. Depending on the species the worm-like, vagile larvae either swim freely to their host species or hatch inside their host and use their mobility to move to a suitable place in the host's body to metamorphize.

Hiving rootring: one of the more primitive vector species that forms extensions, this species parasitizes several species of pelagic, filter-feeding trunkworms. The effect of hiving rootring infestation causes the hosts to seek out the proximity of other infected individuals, which leads to them forming more visible groups. The trunkworms get more likely eaten by marine pneumonopteres, the rootworm eggs hatch inside their digestive systems to spend their larval state there, and when defecated into water, will actively seek out a host.

Coastal spiropus mindhacker: Mindhackers are a more derived group of vectors that alter the behaviour of their hosts to a larger extent. Their body separates into an egg-bearing part that is located close or outside of the outer or digestive surface of the host and a part that contains the large neural glands as well as three forking extensions that grow throughout the most of the host's body. The shown species infects spiropodes and prevents them from wandering into pelagic areas, restricting them to a life in the shelf zones, where the water is far more suitable for the mindhacker's eggs.

Bridge island tailroot: This small group of vectors developed the extensions to reach the host's nervous system or bloodstream independently. In contrary to the other extension-forming vector group, which infects a wide range of different animal groups, tailroots only use certain groups of micropneumonopteres as primary hosts and usually work by altering their mating behaviour.

Description
The vectors are an exclusively parasitic group of xenonematodes with a ring-shaped adult shape. This shape is a result of a reduction of the outer cuticula to the point the creature turns inside-out and maximizes its absorbing surface inside the host as a result. Aside from the outer skin most of the inner organs save for the reproductive system and often a few neural glands get reduced or absorbed as well. The more primitive, ring-like species often only parasitize in the proximity of the intestinal wall, while the majority has evolved string-like, forking extensions to build up contact with the host's nervous system or bloodstream and control its behaviour with the excretions of the neural glands. Depending on the species the worm-like, vagile larvae either swim freely to their host species or hatch inside their host and use their mobility to move to a suitable place in the host's body to metamorphize.

Hiving rootring: one of the more primitive vector species that forms extensions, this species parasitizes several species of pelagic, filter-feeding trunkworms. The effect of hiving rootring infestation causes the hosts to seek out the proximity of other infected individuals, which leads to them forming more visible groups. The trunkworms get more likely eaten by marine pneumonopteres, the rootworm eggs hatch inside their digestive systems to spend their larval state there, and when defecated into water, will actively seek out a host.

Coastal spiropus mindhacker: Mindhackers are a more derived group of vectors that alter the behaviour of their hosts to a larger extent. Their body separates into an egg-bearing part that is located close or outside of the outer or digestive surface of the host and a part that contains the large neural glands as well as three forking extensions that grow throughout the most of the host's body. The shown species infects spiropodes and prevents them from wandering into pelagic areas, restricting them to a life in the shelf zones, where the water is far more suitable for the mindhacker's eggs.

Bridge island tailroot: This small group of vectors developed the extensions to reach the host's nervous system or bloodstream independently. In contrary to the other extension-forming vector group, which infects a wide range of different animal groups, tailroots only use certain groups of micropneumonopteres as primary hosts and usually work by altering their mating behaviour.