Pseudorhabdosynochus kritskyi is a diplectanid monogenean parasitic on the gills of the gag, Mycteroperca microlepis.

The species has been described by Dyer, Williams and Bunkley-Williams in 1995[1] and redescribed successively by Yang, Gibson and Zeng in 2005[2] and by Kritsky, Bakenhaster and Adams in 2015.

Four eyespots immediately anterior to pharynx, lacking lenses; members of posterior pair slightly larger, closer together than those of anterior pair; accessory chromatic granules small, irregular in outline, usually absent in cephalic region.

Ventral bar with medial constriction, tapered ends, longitudinal medioventral groove.

Testis subspherical, usually with indentation of posterior margin suggesting two posterior lobes; proximal vas deferens dorsoventrally looping left intestinal cecum; seminal vesicle a simple dilation of distal portion of vas deferens, lying just posterior to male copulatory organ; vas deferens entering large subspherical ejaculatory bulb; ejaculatory duct entering portal to male copulatory organ; large vesicle (prostatic reservoir?)

Male copulatory organ reniform, quadriloculate, with short tapered cone, elongate distal tube, and variable apparently retractile filament (usually not observed); walls of two distal chambers thick, walls of chambers becoming thinner proximally.

Germarium pyriform; germarial bulb dextral, lying diagonally at body midlength, with elongate dorsoventral loop around right intestinal cecum; ootype lying to left of body midline; Mehlis' gland not observed; uterus delicate, banana shaped when empty.

Bilateral vitelline ducts at level of origin of uterus; vitellarium absent in regions of other reproductive organs, otherwise dense throughout trunk.

[3] The type-host and only host of Pseudorhabdosynochus kritskyi is the gag, Mycteroperca microlepis and the type-locality is the Gulf of Mexico.