ISSN 10630740, Russian Journal of Marine Biology, 2010, Vol. 36, No. 1, pp. 16–25. © Pleiades Publishing, Ltd., 2010.
Original Russian Text © O.P. Poltarukha, 2010, published in Biologiya Morya.
The fauna of cirripede barnacles of Vietnam is con
sidered to be well studied. A recently published mono
graph  mentions 86 species of cirripedes inhabiting
these waters; most of them are dwellers of intertidal
and subtidal zones. However, the information on the
fauna of deepwater cirripede barnacles of Vietnam
still remains scanty, especially in comparison with the
data about deepsea Cirripedia of the adjacent areas,
such as the Philippines [15–17].
As the materials for this paper we used deepsea
cirripedes collected by Dr. B.I. Sirenko in lower sub
tidal—bathyal zones of Southern Vietnam in 1984, in
the course of scientific cruise of RV
samples, deposited in the collections of Zoological
Institute RAS (St. Petersburg) were kindly loaned to
the author for treatment. The brief characteristics of
the sampling stations and the description of cirripede
barnacles found in the samples follow. The taxonomic
position of the species is provided following the paper
by Newman .
Trawl no. 45, 17.09.1984, 11
0 N, 109
120 m deep, on a spine of the sea urchin
(Stubbings, 1936), five specimens.
Trawl no. 52, 22.09.1984, 11
6 N, 110
700 m deep, on spines of sea urchins
, ten specimens and
1906, four specimens.
Trawl no. 55, 23.09.1984, 10
8 N, 109
495–500 m deep, silt, on spicules of the sponge
, two specimens.
Trawl no. 56, 23.09.1984, 10
24 N, 109
490 m deep, silt, on spicules of sponges
, eight specimens;
lum sociabile sociabile
, two specimens (sitting on
, one specimen (sitting on
Trawl no. 60, 24.09.1984, 10
4 N, 109
400 m deep, silt,
, four spec
Order Pedunculata Lamarck, 1818
Suborder Heteralepadomorpha Newman, 1987
Family Heteralepadidae NilssonCantell, 1921
Broch, 1922: 184,
Jones et al., 2000:
Capitulum is ovalshaped, with
smooth surface. Carinal ridge is absent. Orifice occu
pies about 40% of the occludent margin. Valves are
slightly extended beyond the orifice. Beneath the ori
fice there is a small triangular chitinous scutum.
Peduncle is cylindrical in shape, with transverse wrin
kles; it is somewhat shorter that the capitulum and is
distinctly separated from the latter.
Labrum is Ushaped, slightly con
cave, bears rather large rounded dents, setae are
absent. Labial palps are lanceletshaped, covered with
setae. Mandible has three teeth and a sharp lower
angle. Lower margins of the second and third teeth are
serrated. Maxilla I is provided with a large upper tooth
and tortuous cutting edge. A notch is clearly notice
able located beneath three upper teeth. Beneath the
notch there is a broad tubercle bearing teeth of differ
ent size, including two large ones. Beneath the tuber
cle there is another small notch and another small
DeepSea Barnacles (Cirripedia: Thoracica) of Southern Vietnam.
O. P. Poltarukha
Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, 119071 Russia
Accepted September 15, 2009
—Deepsea barnacles (Cirripedia: Thoracica) were sampled during a cruise of the research vessel
in waters of southern Vietnam in 1984. In all, seven species were found:
Arcoscalpellum sociabile sociabile
. These species, with the exception of
, are new
records for Vietnam. Their descriptions, figures, and comparisons with literature data are presented.
barnacles, bathyal zone, Vietnam.