Biospeedotrema biospeedoi is a species of trematodes inhabiting hydrothermal vent fishes (particularly Thermichthys hollisi) in the south eastern Pacific Ocean.
It can be distinguished from its family by its symmetrical testicular configuration; its uterus passing between the testes.
Furthermore, it differs from its cogenerates by the shape of its body; its uterine extent is posterior to its testes and its small vitellarium.
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