ISSN 10630740, Russian Journal of Marine Biology, 2011, Vol. 37, No. 6, pp. 509–511 © Pleiades Publishing, Ltd., 2011.
Original Russian Text © I.N. Marin, O.M. Korn, E.S. Kornienkob, 2011, published in Biologiya Morya.
During our studies of fauna associated with the
(De Haan, 1841)
(Balss, 1913) (Upogebiidae) at the area
of the Vostok Marine Biology station (IMB FEB RAS)
in Vostok Bay, Sea of Japan, numerous specimens of
the symbiotic crab
belonging to the family Varunidae have been found.
This species was found for the first time in Russian
waters of the Sea of Japan and is new for the fauna of
Russia. Earlier, six members of the family Varunidae
have been reported from the Sea of Japan:
(De Haan, 1835),
(De Haan, 1835),
(De Haan, 1835),
Haan, 1835), and
(De Haan, 1835) .
The examined material is deposited in the collections
of the Museum of the Institute of Marine Biology FEB
RAS (Vladivostok), Institute of Ecology and Evolu
tion RAS (Moscow), and National University of Sin
Family Varunidae H. Milne Edwards, 1853
Subfamily Gaeticinae Davie et Ng, 2007
Davie et Ng, 2007
Shen, 1932: 155, Figs. 98, 100,
plate 6, Figs. 1, 2 (type locality: Shandong Province,
northeastern China); Itani et al., 2002: 46–47, Figs. 2, 3.
—Davie, Ng, 2007: 265, Figs. 7, 8.
Three adult females and 8 males;
Sea of Japan, Vostok Bay, “Vostok” Marine Biological
Station, Institute of Marine Biology FEB RAS, at a
pier, 1–1.5 m deep, in burrows of mud shrimp of the
, sand, collected using a pump, Sep
tember 25, 2009; coll. I.N. Marin and T.I. Antokhina;
6 adult females, 19 males and 12 juveniles; same local
ity, May 25–29, 2010, coll. I.N. Marin; 4 adult females
and 6 males; same locality; June 14–30, 2011, coll.
I.N. Marin. The carapace of adult females reaches
12–15 mm wide; males are smaller, their carapace
reaches 8–10 mm wide (see figure).
The morphology of the crabs agrees with the origi
nal species description  and descriptions provided
in later publications [2, 4]. This species differs from
the closely related
, in having the following
characteristics: the male suborbital crest consists of
two longitudinal crests and one tubercle (in
this structure consists of nine tubercles arranged into a
row); the third maxilliped does not close the buccal
cavity completely (in
it completely closes
the buccal cavity); the tips of the movable and fixed
fingers of cheliped obviously cross (in
only meet each other). A key for the identification of
three species of the genus
is provided in a
paper by Davie and Ng .
Ecology and distribution.
The crabs have symbiotic
mode of life and inhabit the burrows of the large mud
Their biology is
similar to that of the closely related species
(Takeda, 1974) (see [3, 4]). The shrimp dig their bur
rows in rinsed sand, usually in between the roots of the
(Shen, 1932) (Varunidae:
Gaeticinae) from Vostok Bay, Sea of Japan: A New Species
for the Fauna of Russia
I. N. Marin
, O. M. Korn
, and E. S. Kornienko
Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, 117071 Russia
Zhirmunsky Institute of Marine Biology, Far East Branch, Russian Academy of Sciences, Vladivostok, 690059 Russia
email: firstname.lastname@example.org, email: email@example.com
Received May 26, 2011
—A symbiotic crab
(Shen, 1932) (Varunidae: Gaeticinae) that lives in burrows of
the large ghost shrimp
(De Haan, 1841) and
(Balss, 1913) (Upogebiidae) was found
in Vostok Bay (Peter the Great Bay, Sea of Japan) for the first time. The occurrence of mature and juvenile
specimens indicates the existence of a stable population of this species in the investigated region. This finding
substantially extends the distribution area of
in the Sea of Japan.
Decapoda, Brachyura, Varunidae,
, Sea of Japan, Vostok Bay,