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Additional Photos
underside
branchia
rhinophores
young, 12 mm
mating
with egg mass
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GALLERY
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Halgerda terramtuentis (Bertsch & Johnson, 1982)
Maximum size: 50 mm.
Identification:
This
species
is
translucent
white with pale-yellow
tubercles on its notum connected by low ridges and a network of
yellow-orange lines. Thin, yellow-orange lines edge both the mantle
margin and the foot. The
rhinophores and gills are translucent white densely spotted with
black.
Natural history:
Halgerda terramtuentis
is a common
species found in rocky areas and on shaded cavern walls. Rarely it is
seen crossing open sand. It occurs at
moderately exposed to highly exposed sites at depths of 1.5-43 m (5-140
ft). Bertsch and Johnson, who described this species, often found it
on a yellow sponge. It lays a bright yellow egg mass.
Distribution:
Big Island, Maui, Lanai, Oahu, Kauai, Niihau and French Frigate Shoals.
Taxonomic notes:
This
is
the
species
listed as Halgerda
cf. graphica Basedow and
Hedley, 1905 in Kay, 1979 as well as Kay & Young, 1969. It's also listed as Halgerda
sp. in Bertsch and Johnson, 1981. Its name means "looking at the earth
with care," in recognition of the Earthwatch Institution volunteers who
helped Bertsch and Johnson with field research on Oahu. It is referred
to as the "gold lace nudibranch" in Hoover, 1998 & 2006; the "gold
lace sea slug" in Hoover, 1997 and the "Earthwatch nudibranch" in
Bertsch and Johnson, 1981. It was
first reported in Hawaii from Ala Moana, Oahu in Feb., 1962 (Kay &
Young, 1969).
Photo: PF:
Makena, Maui: Feb. 28, 2008.
Observations and comments:
Note
1: ( )
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