March 20, 2000
From: C. Carlson & P.J.Hoff
Atsushi's 5mm Halgerda appears to be H. diaphana. The only thing we would question might be the size of the spotting on branchia and rhinophores. I have a number of H. diaphana photos (courtesy of Bob Bolland) and all except the smallest 29mm specimen have fine spotting. The 29mm specimen has larger spots more widely spaced.
I have included two scans of some not so good shots of H. guahan.
Clay & Patty Jo
firstname.lastname@example.orgCarlson, C. & Hoff, P.J., 2000 (Mar 20) Re: Three? Halgerda from Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/2128
Dear Clay & patty Jo,
Thanks for the photos and for clarifying the juvenile photo.