Spirocamallanus monotaxis is redescribed from Monotaxis grandoculis (L
ethrinidae) and reported from 10 other species of coral reef associate
d fishes from both the Society Islands and the Tuamotu Islands. This r
epresents a new locality for S. monotaxis and 10 new host records. Spi
rocamallanus colei n.sp. is described from Acanthurus achilles (Acanth
uridae) and from Acanthurus guttatus, Acanthurus lineatus, Acanthurus
triostegus, and Zebrasoma scopas from bath the Society Islands and the
Tuamotu Islands. Spirocamallanus chaimha n.sp, is described from Cten
ochaetus striatus and Acanthurus olivaceous (Acanthuridae) from Moorea
in the Society Islands. The number of buccal capsule ridges in Spiroc
amallanus varies and minor differences have no taxonomic importance. M
arine Spirocamallanus species appear to belong to a single clade chara
cterized by 3 preanal papillae and 5 postanal papillae. This clade may
be subdivided on the basis of the shape of the female tail. In French
Polynesia, ecological factors as opposed to phylogenetic factors appe
ar to determine host specificity for Spirocamallanus. A new system of
reporting the positions of the caudal papillae, based on the position
of the papillae relative to the length of the alae, is used.