Dermatobranchus striatellus
Baba, 1949

Suborder: ARMININA
Family: Arminidae


Known only from Japan.


Hachijo Island, Japan, Depth: 7m, 21 Oct, 2001. Length: 10mm. Photo: Nishina Masayoshi

Blackish background colour which is almost completely obscured by approximately 8-10 broad rounded greyish-white longtudinal ridges on the mantle. The mantle border is cream with a thin orange line at the extreme edge. The oral veil is white with a bright ornage border and the rhinophores have a translucent white stalk and a bright orange club. Grows to approx 15mm long.

• Baba, K. (1949) Opisthobranchia of Sagami Bay. Iwanami Shoten, Tokyo. 211pp + pls.

Authorship details
Rudman, W.B., 2001 (October 29) Dermatobranchus striatellus Baba, 1949. [In] Sea Slug Forum. Australian Museum, Sydney. Available from

Related messages

Dermatobranchus striatellus from Japan

November 1, 2001
From: Nishina Masayoshi

Dear Dr.Rudman,

I attached photos of Dermatobranchus striatellus for your species list.
This is a one of very common species in Sagami Bay and Hachijo Island.

Date:21 Oct, 2001
Location: Hachijo Island, Japan
Depth: 7m
Length: 10mm

Best Regards,
Nishina Masayoshi

Nishina, M., 2001 (Nov 1) Dermatobranchus striatellus from Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Thanks Nishina,
Have you ever seen this animal feeding? perhaps on a soft coral?
Best wishes,
Bill Rudman

Rudman, W.B., 2001 (Nov 1). Comment on Dermatobranchus striatellus from Japan by Nishina Masayoshi. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from