Microcotyle tampicensis is a species of monogenean, parasitic on the gills of a marine fish.

The authors explained this similarity by the differentiation of Microcotyle archosargi based mainly on the organisation and shape of the genital atrium.

[3] Microcotyle tampicensis has the general morphology of all species of Microcotyle, with an elongated body, a rounded anterior end and a smooth cuticle, comprising an anterior part which contains most organs and a posterior part called the haptor.

The digestive organs include an anterior, terminal mouth, an ovoid muscular pharynx, and a posterior intestine with two branches provided with small lateral diverticula and penetrate the haptor freely to its terminal end.

The reproductive organs include an anterior genital atrium, with spines arranged in concentric circles, a dorsal vagina opening in front of the egg at the beginning of the seminal vesicle, a single ovary in form of a question mark, 13 ovoid or slightly spherical testes which are posterior to the ovary.