Chromodoris dianae Gosliner & Behrens, 1998 (27mm)
OPISTHOBRANCH OF THE WEEK
Opisthobranch of the Week Data
Frequency on Okinawa:
- Order: NUDIBRANCHIA
- Suborder: Doridina
- Family: Chromodorididae
[brackets indicate range for all Okinawa-collected specimens of the species]
- Individual Collection No: RFB #3061
- Location: Seragaki, Okinawa (26o 30.4'N, 127o 52.6'E)
[all 3 Okinawan animals were found at Seragaki]
- Date: 9 September, 1992 [19 Aug '92, 9 Sep '92, 4 Apr '97]
- Depth: 140ft (42.7m) [70ft, 140ft, 215ft]
- Water temperature at collection depth: Not recorded
- Size: TL 27mm [23mm, 27mm, 35mm]
- Specimen deposited: California Academy of Sciences
Chromodoris dianae is one of five recently described species of Chromodoris from the tropical Indo-Pacific (Gosliner & Behrens, 1998). The featured animal was named by David Behrens for his wife, Diane. The animal is rare on Okinawa as I've seen and collected only three animals as of this writing.
Chromodoris dianae is similar to other pale blue members of the C. quadricolor complex and it is one of several bluish-colored Okinawan chromodorids with black longitudinal lines and orange or yellow on the gills and rhinophores. The two Okinawan chromodorids which most closely resemble C. dianae are
C. boucheti and C. michaeli. The relatively dark medial blotch of C. michaeli and the "near figure eight" pattern of the black longitudinal lines of C. boucheti serve to separate these two animals from C. dianae.
- Gosliner, T.M.; Behrens, D.W. 1998. Five new species of Chromodoris (Mollusca:
Nudibranchia: Chromodorididae) from the Tropical Indo-Pacific Ocean. Proceedings of
the California Academy of Sciences 50(5): 139-165, 15 figs.
Copyright © 1999 Robert F. Bolland
Digitally manipulated photo