Sulawesi Haminoea not H. ovalis

March 26, 1999
From: C.Carlson & PJ Hoff


After seeing the drawings from Lindsay Warren, I would like to change my identification of his animals. His '79' is our C.86 -- afraid it is just another Haminoea sp.. It also differs from H. cymbalum in terms of radula & gizzard plates. The radula
is generally 5.1.5 with the inner edge of the first lateral denticulate. The gizzard plates are ridged with numerous chitinous rods. The average size of the animal, for those measured, is about 6mm.

There are numerous haminoeid forms with orange spots, but only five that we now know of where this spotting seems to dominate the patterning. You now have 4 of the 5.

Clay & Patty Jo


Carlson, C. & Hoff, P.J., 1999 (Mar 26) Sulawesi Haminoea not H. ovalis. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Thanks Clay & Patty Jo,
I'll certainly look at little orange spotted Haminoea more carefully in future. I am embarassed to say that looking back at my field notes there are some cases where I have written "no photo - typical colour pattern". I guess we've all fallen into that trap at times with some apparently easily identifiable group of species.
Bill Rudman.

Rudman, W.B., 1999 (Mar 26). Comment on Sulawesi Haminoea not H. ovalis by C.Carlson & PJ Hoff. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Haminoea sp. 2.

Related messages

  1. Sketches of Haminoea #79 cymbalum?
    From: Lindsay Warren, March 22, 1999
  2. Haminoea ovalis another orange-spotted spec
    From: Carlson & Hoff, March 21, 1999

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