Alternate Title

Studies on the Crustacea of the Turks and Caicos Islands, British West Indies. II. Armadilloniscus steptus, N. Sp. (Isopoda: Oniscidea: Scyphacidae) from Pine Cay

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Armadilloniscus steptus, n. sp., the second species of this genus from the Caribbean Sea, is described and distinguished from the other five species from the New World. The new species, collected from the upper intertidal zone on Pine Cay, Turks and Caicos Islands, differs from A. coronacapitalis, A. ellipticus, A. holmesi, A. lindahli, and A. ninae by the greater degree of tuberculation of the integument, smaller size at maturity, and sexual dimorphism in the structure of the pleon.

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