Opisthobranch of the Week Data Phyllidiopsis krempfi is
considered to be rare on Okinawa as I have collected only four
individuals as of mid August, 2000. Although I'm suggesting the
species is rare here, I suspect that I've seen others,
erroneously assuming they were of more common species. There are
several reasons for this, but perhaps the best reason is that
many Okinawan phyllidiids are very commonly seen here and I've
tended in the past not to pay much attention to the group. The
closest appearing Phyllidiopsis species on Okinawa is P. pipeki,
with similar mantle and rhinophore coloration, but Brunckhorst
(1993) points out that P. krempfi is very tuberculate with many
multicompound tubercles, whereas P. pipeki has sparsely
scattered single and compound tubercles. Also, an apparently
consistent feature seen in P. krempfi is the presence of the two
black primary longitudinal lines which extend around the
rhinophores and join at a point anterior to the rhinophores. I
have a second page showing two separate