Revision Of The Genus Parapagurus (anomura, Paguroidea, Parapaguridae), With Redescriptions Of The Western Atlantic Species And Their Morphological Variations (hermit Crabs, Crustacea)

Date of Award




Degree Name

Doctor of Philosophy (Ph.D.)


Marine Biology and Fisheries


As a result of a revision of the genus Parapagurus Smith, three genera are proposed: Parapagurus, restricted, New Genus A, and Sympagurus Smith, reinstated. Diagnoses of the three genera are given, and a number of structures are described. A key to aid in the identification of the genera of the family is presented. All taxa heretofore assigned to Parapagurus are reassigned. Four species of Parapagurus sensu stricto, and six of Sympagurus occur in the western Atlantic. Of these, two are new and are described, Parapagurus n. sp. A and Sympagurus n. sp. A. Parapagurus abyssorum (Filhol) is a senior homonym of the eastern Pacific Parapagurus abyssorum Henderson, and a new name, Parapagurus holthuisi, is given to Henderson's taxon. The subspecies of Parapagurus pilosimanus Smith, and Sympagurus bicristatus (A. Milne Edwards), are elevated to specific rank. Sympagurus arcuatus A. Milne Edwards and Bouvier, is a junior synonym of Sympagurus gracilis (Henderson). The treatment of each species includes a synonymy, illustrations, comments on symbiotic associations, and a distributional map. Keys to aid in the identification of the western Atlantic species are presented. The morphological variations of the western Atlantic species are described. SEM micrographs of the scales of the propodal rasp of the fourth pereopod are included. The horizontal and vertical patterns of distribution of the western Atlantic species are discussed.


Biology, Zoology

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