butterfly crab

noun1

1. •
   A species of shallow-water king crab (Cryptolithodes typicus) native to coastal regions of the northeastern Pacific Ocean

   • Hart, Josephine F. L. (4 May 1965), “Life History and Larval Development of Cryptolithodes typicus Brandt (Decapoda, Anomura) from British Columbia”, in Crustaceana, volume 8, number 3, →DOI, →JSTOR, pages 255–276: “The turtle or butterfly crab, Cryptolithodes typicus Brandt, 1849, is a crustacean of [...] the family Lithodidae.”
   • Fretwell, Kelly; Starzomski, Brian (2015), “Butterfly crab • Cryptolithodes typicus”, in Biodiversity of the Central Coast, archived from the original on 06 Apr 2018: “The butterfly crab's range extends from northern Alaska to southern California.”