Platydoris formosa (Alder & Hancock,
|Maximum size: about 150 mm.
is a flattened, firm-textured, cream dorid intricately flecked
with light brown. The light brown flecks transition to dark brown on
the rhinophore sheaths and the margin of the notum. The rhinophores are
red and there are red blotches on the underside. Some animals also have
red blotches on the notum.
is a moderately rare species found in tide pools and subtidally to 20 m
(66 ft) at moderately exposed to highly exposed rocky sites. Mature
animals sometimes trail each other in a manner reminiscent of Hypselodoris imperialis. (Note 1) It lays a pale orange egg mass that hatches
in about eight days
in the laboratory.
Big Island, Maui, Oahu and Kauai: widely distributed in the Indo-Pacific.
species is referred to as the "speckled platydoris" in Hoover,
2006 (deleted in 5th printing and restored in 2019 printing). It was first reported in Hawaii from
Moana, Oahu in Dec.,
(Kay & Young, 1969).
Schwanke: Molokini Islet; May, 2005.
Observations and comments:
1: A pair of large animals found
together appeared to show trailing behavior in a holding bucket. Scott
Johnson also observed trailing in the field on June 2, 1984 off Makua
Beach, Oahu as did Rebecca Bicker on Maui in May, 2021 (see photo).