(Fig. 14)
Synonyms. None
Type host and locality. Makaira nigricans, Caribbean Sea.
Morphology. Size: 27–29 mm. Papillae: full coverage, spherical, clavate and tubiform, simple branching; unorganized arrangement. Holdfasts: two only, short. First antenna with three segments, second with two segments. Plumes: simple, single or double.
Remarks. A valid species. Found so far only on blue marlin (M. nigricans) in the south Atlantic (Hogans 1988c; Williams & Bunkley-Williams 1996). A small species with a unique overall shape and uniform papillae structure between specimens. The only small (<50 mm) Pennella known to infest large scombriform fishes.