Allopseudaxinoides
Allopseudaxinoides is a genus which belongs to the phylum Platyhelminthes and class Monogenea; all its species are parasites of fish. It was created by Yamaguti in 1965, to include "Allopseudaxinoides euthynni". Morphology. Species of "Allopseudaxinoides" are ectoparasites that affect their host by attaching themselves as larvae on the gills of the fish and grow into adult stage. This larval stage is called oncomiracidium, and is characterized as free swimming and ciliated. The name "Allopseudaxine " is composed of a root " Allopseudaxine": a monogenean genus, and the suffix "oides" which means "resembling". Thus, the name "Allopseudaxinoides " means resembling " Allopseudaxine". In fact , species of "Allopseudaxine" have a large body tapering anteriorly, and a unilateral, oblique haptor, (which means that they have a single oblique row of clamps,) giving them a triangular appearance. By this triangular shape, they resemble " Allopseudaxine". However, species of "Allopseudaxinoides" can be distinguished from " Allopseudaxine" by a complete absence of vaginae or the presence of rudimentary ones, the presence of thickenings of clamps capsule, and an accessory clamp sclerite. Species. "Allopseudaxinoides" comprises two species: