Bornella japonica
Baba, 1949
Order: NUDIBRANCHIA
Suborder: DENDRONOTINA
Family: Bornellidae
DISTRIBUTION
Known only from Japan
PHOTO
If anyone has photos of a Bornella with only 3 pairs of dorsolateral processes [cerata] then it could possibly be this species. If so, I would love to see them. ... Bill Rudman
I am not sure if this is a distinct species or not. In Baba's description he says it is of similar size and colour to Bornella stellifer [as B. digitata] but that it is easily distinguished by the following characters:
• Rhinophore sheaths with 4 supra-marginal papillae, the hindmost and largest subdivided into 2-3 smaller papillae. [In B. stellifer the supra-marginal papillae are simple].
• Dorso-lateral processes in 3 pairs, [6 pairs in B. stellifer].
• Shape of radular teeth similar in both species but formula of B. japonica is 35 x 14.1.14, and of B. stellifer 32x 7[or 8].1. 7[or 8].
Baba mentions other differences in the shape of the dorso-lateral processes ('cerata') but they are not clear in his illustrations. It is possible a photo in Kieu Suzuki's book [no 195, p 130 - identified as B. digitata] could be this species but I am not sure.
Reference:
• Baba, K. (1949) Opisthobranchia of Sagami Bay collected by His Majesty, the Emperor of Japan. Iwanami Shoten, Tokyo.
Rudman, W.B., 2001 (September 3) Bornella japonica Baba, 1949. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/bornjapo
Related messages
-
Bornella japonica? from the Marshall Islands
From: Scott Johnson, May 25, 2007 -
Bornella stellifer mating
From: Nishina Masayoshi, October 9, 2002 -
Bornella japonica? from Hachijo Is
From: Rie Nakano , November 1, 2001 -
Bornella japonica? from Japan
From: Nishina Masayoshi, November 1, 2001 -
Bornella japonica? from Japan
From: Nishina Masayoshi, September 12, 2001 -
What is Bornella japonica?
From: Mike An, September 5, 2001