A new mud lobster of the genus Thalassina Latreille, 1806 (Crustacea: Decapoda: Gebiidea: Thalassinidae) from the mangrove forest of the Cần Giờ Mangrove Reserve, South Vietnam.

A new species of mud lobster of the genus Thalassina Latreille, 1806 (Decapoda: Gebiidea: Thalassinidae), Thalassina cangioensis sp. nov., is described from mangrove forests of the Cần Giờ Mangrove Biosphere Reserve, located in the Soài Rạp River delta in the downstream of the Dongnai-Saigon River system, South Vietnam.

Terrestrial crustaceans (Arthropoda, Crustacea): taxonomic diversity, terrestrial adaptations, and ecological functions.

Terrestrial crustaceans are represented by approximately 4,900 species from six main lineages. The diversity of terrestrial taxa ranges from a few genera in Cladocera and Ostracoda to about a third of the known species in Isopoda. Crustaceans are among the smallest as well as the largest terrestrial arthropods.

Ecology determines appearance: a new taxonomic solution for the soft bottom dwelling spider crab Pisoides bidentatus (A. Milne-Edwards, 1873) from the Sea of Japan, with remarks on Pisoides ortmanni (Balss, 1924) and the northwestern Pacific Pugettia Dana, 1851 (Majoidea: Epialtidae).

The northwestern Pacific soft bottom dwelling spider crab, Pisoides bidentatus (A. Milne-Edwards, 1873) (Brachyura: Majoidea: Epialtidae), is re-described using an integrative approach. As a result, it is transferred to the genus Scyra Dana, 1851 (Epialtidae) based on morphological and molecular data, as well as already described larval morphology, which certainly better reflects the phylogenetic relationships of the species.

Two new species of the genus Victoriopisa Karaman amp; Barnard, 1979 (Crustacea: Amphipoda: Eriopisidae) from mangrove communities of Vietnam with a review of previous records.

Two new mud-dwelling amphipod species of the genus Victoriopisa Karaman Barnard, 1979 (Crustacea: Amphipoda: Eriopisidae) are described from the mangrove habitats of the Cn Gi Mangrove Biosphere Reserve and the estuary of the Be River, Vietnam. Both species are characterized by an anteroventral margin of the head being entire, the presence of eyes, the absence of deep excavation on propodus (palm) and well-marked excavation on dactylus of gnathopod 2, relatively long and slender distal segment of uropod 3. The combination of these features clearly separate the newly discovered species from Victoriopisa ovata (Dang Le, 2005) described from Hi Phng, North Vietnam, and other congeneric species.

The hidden diversity of the genus Lyurella Derzhavin, 1939 (Crustacea: Amphipoda: Crangonyctidae): four new species from the subterranean habitats of the northwestern Caucasus, Russia.

Four new species of the Palaearctic crangonyctid amphipod genus Lyurella Derzhavin, 1939 (Crustacea: Amphipoda: Crangonyctidae), L. mikhailovi sp. n.

A New Species of the Aberrant Majid Crab Genus Balss, 1935 (Crustacea: Brachyura, Majidae, Planoterginae) from the Southern Red Sea.

A new species of the aberrant monotypic genus Balss, 1935 (Brachyura: Majidae: Planoterginae) is described from the southern part of the Red Sea, based on a single female recently found in the collection of the Zoological Museum of Moscow State University. The new species is clearly distinguished from Balss, 1935 in the form of carapace, antennal article and third maxilliped, as well as morphology of the ambulatory legs. The record extends the known range of , previously known only from the eastern Indian Ocean and Western Pacific, by more than 7000 km.

Cryptic diversity of the rocky crab genus Glebocarcinus Nations, 1975 (Crustacea: Decapoda: Cancridae): description of a new species from Russian coastal waters of the Sea of Japan based on morphology, DNA and distribution.

A new cancrid crab species Glebocarcinus kashini sp. nov. (Decapoda: Brachyura: Cancridae) is described from Russian coastal waters of the Sea of Japan.

Redescription of Alpheus vladivostokiensis (Vinogradov, 1950), a large and conspicuous snapping shrimp from the northern Sea of Japan (Decapoda: Caridea: Alpheidae).

The poorly described Alpheus vladivostokiensis (Vinogradov, 1950) comb. nov., originally assigned to the genus Betaeus Stimpson, 1860 and hitherto considered as a nomen dubium, is redescribed based on material recently collected in Troitza Bay in the Russian Far East and Hakodate Bay in southern Hokkaido, Japan, as well as older material deposited in the Zoological Museum of the Moscow State University.

A new echiuran-associated snapping shrimp (Crustacea: Decapoda: Alpheidae) from the Indo-West Pacific.

Alpheus echiurophilus sp. nov. (Crustacea: Decapoda: Caridea: Alpheidae) is described based on material from Japan (Ryukyu Islands) and Vietnam (Nha Trang Bay); an additional, morphologically slightly different specimen from Madagascar (Nosy-Bé) is preliminarily referred to A.