Opisthobranch of the Week Data
Fryeria picta is considered to be uncommon on Okinawa; although I've collected only three specimens, numerous others have been seen and photographed but not collected. Of the five described species of Fryeria (Brunckhorst 1993) only F. picta is known from the waters of Okinawa's main island as of this date (Aug., 2007). However, see Fryeria larryi, photographed by Atsushi Ono from the nearby Keramas*.
The Genus Fryeria is unique among the phyllidiids in as much as members of the genus have a ventrally positioned anus (in a 1988 publication Gosliner & Behrens reported a single specimen of Phyllidiopsis blanca having a ventral anus, p. 310). The only other superficially similar appearing Okinawa phyllidiid is Phyllidia coelestis, however in the case of Fryeria picta, the broad blue bases having large isolated gold-capped notal tubercles surrounded in black serve to segregate the two animals under field observations.
Fryeria picta was featured at an earlier date on these pages as F. menindie, however F. menindie (Brunckhorst, 1993) was shown by Yonow (1996) to be a junior synonym of Phyllidia picta Pruvot-Fol, which Yonow showed was however a species of Fryeria.
* Keramas = the Kerama Islands Group, located 30 ~ 40 kilometers west of the Okinawa capitol, Naha.