Portunidae

• Portunus

  Type genus of the family Portunidae.

• Ovalipes

  A genus of Portunidae.

• Callinectes

  New World blue crabs.

Amphipoda

• Caprella

  Skeleton shrimp.

• Cyamus

  Whale lice.

Limulidae

• Limulus

  Type genus of the family Limulidae.

• Tachypleus

  A genus of Limulidae.

Branchiopoda

• genus Daphnia

  Water fleas.

• Triops

  Type genus of the family Triopidae: small crustaceans with a small third median eye.

Brachyura

• Menippe

  Stone crabs.

• Uca

  Fiddler crabs.

Argiopidae

• Aranea

  A genus of orb-weaving spiders including common garden spiders and barn spiders.

• Argiope

  The type genus of Argiopidae; small genus of orb-weaving spiders.

Majidae

• Maja

  Type genus of the Majidae; nearly cosmopolitan in distribution.

• Macrocheira

  Giant crabs of Japan.

Ixodidae

• Ixodes

  Type genus of the family Ixodidae.

• Dermacentor

  Vectors of important diseases of man and animals.

Astacidae

• Astacus

  Type genus of the family Astacidae; Old World crayfish.

• Cambarus

  A genus of Astacidae.

Mysidae

• Mysis

  Type genus of the family Mysidae.

• Praunus

  A genus of Mysidae.

Also contains

• Cancer

  Type genus of the family Cancridae.

• Homarus

  Type genus of the family Homaridae: common edible lobsters.

• Artemia

  Fairy shrimp; brine shrimp.

• Pinnotheres

  Type genus of the family Pinnotheridae: pea crabs.

• Palaemon

  Type genus of the family Palaemonidae; widely distributed genus.

• Porcellio

  Old World genus of isopod crustaceans.

• Orchestia

  Type genus of the family Orchestiidae.

• genus Architeuthis

  Giant squid.

• genus Cyclops

  Copepod water fleas.

• Phalangium

  Type genus of the family Phalangiidae.

• Chelifer

  A genus of Chelonethida.

• Mastigoproctus

  Giant whip scorpions.

• Paralithodes

  A genus of Lithodidae.

• Latrodectus

  Venomous spiders.

• Lycosa

  Type genus of the family Lycosidae.

• Palinurus

  Type genus of the family Palinuridae.

• Pagurus

  Type genus of the family Paguridae.

• Trombicula

  Type genus of the family Trombiculidae.

• Sarcoptes

  Type genus of the family Sarcoptidae: itch mites.

• Peneus

  Type genus of the family Peneidae.

• Panonychus

  A genus of Tetranychidae.

• Scutigerella

  Garden centipedes.

• genus Squilla

  Type genus of the family Squillidae.

• Armadillidium

  Type genus of the Armadillidiidae.

• Scutigera

  A genus of Scutigeridae.

• Oniscus

  Type genus of the Oniscidae; woodlice that cannot roll into a ball.

• Geophilus

  Type genus of the Geophilidae: a cosmopolitan genus of centipedes sometimes called ea...

• Nephrops

  A genus of Nephropsidae.

• Crangon

  Type genus of the family Crangonidae.