Roboastra gracilis (Bergh, 1877)
|Maximum size: 13 mm (Bertsch
& Johnson, 1981).
This species has a dusky orange body marked by interrupted bright
orange lines. The gills, cephalic tentacles, rhinophores and foot
are tipped with purple.
is a rare species known from only four animals found in moderately
exposed to highly exposed rocky habitats between 3 and 9 m (10 and 29
ft). An 8 mm animal
arc-shaped, orange egg
mass that hatched in five days in the laboratory.
Maui, Oahu and Midway: widely distributed in the Indo-Pacific.
First recorded in Hawaii at Makua, Oahu by Scott Johnson on June 1,
Photo: CP: 8
mm; Maliko Bay, Maui; April 19, 2008.
Observations and comments:
1: ( )