National Institute for Environmental Studies, Japan NIES Invasive Species of Japan Japanese | English
  1. Invasive Species of Japan Home >
  2. Invertebrates (except insects)
Invertebrates (except insects) Go to Alert List

Mammals | Birds | Reptiles | Amphibians | Fishes | Insects | Invertebrates (except insects) | Plants
[Photo]: With picture
Higher Taxa Scientific Name
[Common name]
Legal control Distribution in Japan
Rhynchodemidae, Tricladida, Turbellaria, Platyhelminthes Platydemus manokwari
  [Flatworm]
Yes Ryukyu Archipelago (Okinawajima, Kumejima, Miyakojima, Irabujima, Ikejima, Henzajima ...
Serpulidae, Canalipalpata, Polychaeta, Annelida Ficopomatus enigmaticus River mouses and ports of Miyagi, Chiba, Tokyo, Kanagawa, Shizuoka, Aichi, Osaka, Oka ...
Serpulidae, Canalipalpata, Polychaeta, Annelida Hydroides elegans coast of Honshu, Shikoku, Kyushu, Oki Islands, and Amamioshima Island.
Theridiidae, Araneae, Arachnida, Arthropoda Latrodectus geometricus
  [Brown widow spider]
Yes There are records in Tokyo, Kanagawa, Aichi, Kyoto, Osaka, Hyogo, Okayama, Yamaguchi, ...
Theridiidae, Araneae, Arachnida, Arthropoda Latrodectus hasselti
  [redback widow spider]
Yes Recorded in Iwate, Miyagi, Fukushima, Gumma, Ibaraki, Saitama, Chiba, Tokyo, Kanagawa ...
Theridiidae, Araneae, Arachnida, Arthropoda Latrodectus mactans
  [Black widow spider]
Yes
Thelyphonidae, Thelyphonida, Arachnida, Arthropoda Typopeltis stimpsonii   [Photo]
  [Amami whipscorpion]
Established on Hachijojima Is. (Izu Islands). The population in Ushibuka, Amakusa, Ku ...
Eriophydae, Prostigmata, Aracnida, Arthropoda Aculops lycopersici   [Photo]
  [Tomato russet mite]
Okinawa, Aichi, Shizuoka, Saitama, Kanagawa, Tokyo, Tochigi, Gumma, Yamanashi, and Ni ...
Paradoxosomatidae, Diplopoda, Arthropoda Chamberlinius hualinensis   [Photo] Okinawajima, Amamioshima, Tokunoshima, Yakushima, and Hachijojima Is., Kagoshima, Tok ...
Atyidae, Decapoda, Malacostraca, Crustacea, Arthropoda Neocaridina sp. Yes Hokkaido, Miyagi, Chiba, Kanagawa and Shiga Pref.
Cambaridae, Decapoda, Malacostraca, Arthropoda Procambarus clarkii
  [red swamp crayfish]
Entire Japan
Inachoididae, Decapoda, Malacostraca, Arthropoda Pyromaia tuberculata
  [tuberculate pear crab]
Sendai Bay, Tokyo Bay, Sagami Bay, Lake Hamana Bay, Ise Bay, coast of Shima Peninsula ...
Astacidae, Decapoda, Malacostraca, Arthropoda Pacifastacus leniusculus
  [Signal crayfish]
Yes Hokkaido, Fukushima, Shiga, Nagano, Tochigi and Chiba Prefs.
Portunidae, Decapoda, Malacostraca, Arthropoda Carcinus aestuarii
  [Mediterranean green crab]
Tokyo Bay (Tokyo, Chiba, Kanagawa Prefs.), Osaka Bay (Osaka and Hyogo Prefs.), Ise Ba ...
Balanidae, Sessilia, Maxillopoda, Arthropoda Amphibalanus amphitrite
  [striped barnacle]
Tokyo Bay, coast of Mie Pref., Osaka Bay, western coast of Kyushu.
Balanidae, Sessilia, Maxillopoda, Arthropoda Megabalanus coccopoma
  [Titan Acorn barnacle]
Rock reaf, fishery net, or buoy along coast of Kanagawa, Chiba, Shizuoka, and Wakayam ...
Crangonyctidae, Gammaridea, Amphipoda, Malacostraca, Arthropoda Crangonyx floridanus
  [Florida crangonyctid]
Yes Akita, Yamagata, Miyagi, Fukushima, Shizuoka, Aichi, Gifu, Toyama, Ehime, Oita Prefs. ...
Triopsidae, Notostraca, Branchiopoda, Arthropoda Triops spp.
  [tadpole shrimp]
Triops longicaudatus and T. granarius are widely distributed in central to western Ja ...
Aphelenchidae, Aphelenchida, Secernentea, Nemata Bursaphelenchus xylophilus
  [pine wood nematode]
Entire Japan except Hokkaido and Aomori Pref.
, Aphelenchida, Secernentea, Nemata Globodera rostochiensis
  [Potato-cyst nematode]
Yes Hokkaido, Nagasaki Pref.
Styelidae, Pleurogona, Ascidiacea, Chordata Polyandrocarpa zorritensis Unknown Foulings on ports of Shizuoka, Toyama, Osaka, Hyogo, Tokushima, Kochi, Yamaguchi, and ...
Molgulidae, Pleurogona, Ascidiacea, Chordata Molgula manhattensis Tokyo, Shizuoka, Aichi, Osaka, Hyogo, Ehime, Fukuoka Prefs.
Mytilidae, Mytiloida, Bivalvia, Mollusca Limnoperna fortunei
  [Golden mussel]
Yes Tonegawa River System (Chiba and Ibaraki Prefs.), Lake Oshio (Gumma Pref.), Tenryu Ri ...
Mytilidae, Mytiloida, Bivalvia, Mollusca Mytilus galloprovincialis
  [Mediterranean mussel]
Coast of entire Japan. There are records in the following small islands: Teuri, Yagis ...
Mytilidae, Mytiloida, Bivalvia, Mollusca Perna viridis   [Photo]
  [Green mussel]
1960-1980s: Tokyo Bay, Izu Peninsula, Wakayama, Osaka, Hyogo, Kochi, Oita, Okinawajim ...
Mytilidae, Mytiloida, Bivalvia, Mollusca Xenostrobus securis
  [smll brown mussel]
Coast of Kanto, Chubu districts, and western Japan.
Dreissenidae, Veneroida, Bivalvia, Mollusca Mytilopsis sallei
  [Santo Domingo falsemussel]
Tokyo (lower to river mouse of Sumida River), Chiba Pref. (Lake Niihama, Ichikawa), F ...
Corbiculidae, Veneroida, Bivalvia, Mollusca Corbicula fluminea   [Photo]
  [Asian clam]
Almost entire Honshu, Shikoku, and Kyushu
Veneridae, Veneroida, Bivalvia, Mollusca Meretrix petechialis
  [Hard clam]
No known evidence for establishment in Japan. However, hard clam is constantly releas ...
Hydrobiidae, Neotaenioglossa, Gastropoda, Mollusca Potamopyrgus antipodarum   [Photo]
  [New Zealand mudsnail]
Hokkaido, Aomori, Iwate, Akita, Yamagata, Miyagi, Niigata, Tochigi, Gumma, Saitama, K ...
Nassariidae, Neogastropoda, Gastropoda, Mollusca Nassarius sinarus
  [Nassarius snail]
Seto Inland Sea, Ariake Inland Sea.
Achatinidae, Stylommatophora, Gastropoda, Mollusca Achatina fulica   [Photo]
  [Giant African snail]
Yes Ogasawara Islands, Amami Islands, Okinawajima Is., Miyakojima Is., Yaeyama Islands, a ...
Subulinidae, Stylommatophora, Gastropoda, Mollusca Rumina decollata   [Photo]
  [Decollate snail]
Yes Wakayama, Yamaguchi, Fukuoka, Saga, and Kumamoto Prefs.
Limacidae, Stylommatophora, Gastropoda, Mollusca Lehmannia valentiana   [Photo]
  [Threeband gardenslug]
Yes Honshu, Shikoku, and Kyushu Islands.
Spiraxidae, Stylommatophora, Gastropoda, Mollusca Euglandina rosea   [Photo]
  [Cannibal snail]
Yes Chichijima Island, Ogasawara
Calyptraeidae, Neotaenioglossa, Gastropoda, Mollusca Crepidula onyx
  [onyx slippersnail]
Coast of Hokkaido, Sendai Bay, Fukushima, Kanto, Tokai, Kii Peninsula, Seto Inland Se ...
Ampullariidae, Architaenioglossa, Gastropoda, Mollusca Pomacea canaliculata
  [Apple snail]
Yes Central to western Japan including Ryukyu Islands.
Higher Taxa Common name [Scientific Name] Legal control Distribution in Japan

Mammals | Birds | Reptiles | Amphibians | Fishes | Insects | Invertebrates (except insects) | Plants