Opisthobranch of the Week Data
Chromodoris michaeli is one of five newly described Chromodoris species (Gosliner & Behrens, 1998) from the tropical Indo-Pacific. The animal is named for the second author's son, Michael David Behrens.
C. michaeli is considered to be very rare on Okinawa as I have collected a total of only two individuals over a period of more than twenty years of diving here. The first of the two collected individuals was collected on 28 April, 1990 from 52m. In addition to the two collected specimens, only one other individual has been seen, and that one was photographed but not collected on the 4th of October during 1987.
Of the numerous and variably striped Chromodoris species (united in a group known as the Chromodoris quadricolor complex) found on Okinawa, C. michaeli is the only one having a fairly dark medial blotch connecting the dark lateral lines of the notum (this is true at least in the case of the three animals photographed from Okinawa). This medial blotch effectively serves to distinguish C. michaeli from other similar chromodorids found on Okinawa.