Okinawa Berthella cf. africana

October 22, 2002
From: Bob Bolland


Note added 13 January 2009: This is Pleurobranchus caledonicus Risbec, 1928, which is most probably a species of Berthella.

Hi Bill,
Here are two images of an apparent undescribed Okinawa Berthella sp. having the dark brown patch in the center of the mantle, to add to the recent post of Berthella cf. africana.

RFB # 3007-B
Notum Length: 21mm
Collected from 5ft(1.5m) at Seragaki, Okinawa
15 Jun 1992

RFB # 3107-C
Notum Length: 30mm
Collected from 125ft(38m) at Seragaki, Okinawa
3 Jan 1993

Both of these were found beneath coral rubble during the daytime. In addition to the above two animals, Atsushi Ono (1999) has a similar, but bright red individual, pictured on p. 34 (as Pleurobranchidae sp.1) from the Kerama Islands, which are located 30 ~ 40km west of Okinawa's main island.

• Ono, Atsushi. 1999. Opisthobranchs of Kerama Islands, TBS-BRITANNICA & Co., Ltd., Japan. 184pp.

Cheers,
Bob

bollandr@rapid-link.ne.jp

Bolland, B., 2002 (Oct 22) Okinawa Berthella cf. africana. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/8024

Thanks Bob,
Bill Rudman

Factsheet

Pleurobranchus caledonicus

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