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Systematics of the "giant" Ricinulei (Ricinoididae: Ricinoides) of West Africa : with descriptions of five new species and comparative morphology of the male copulatory apparatus. (Bulletin of the American Museum of Natural History, no. 448)

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dc.contributor.author Botero-Trujillo, Ricardo
dc.contributor.author Sain, Colby E.
dc.contributor.author Prendini, Lorenzo
dc.date.accessioned 2021-04-05T13:39:13Z
dc.date.available 2021-04-05T13:39:13Z
dc.date.issued 2021-04-05
dc.identifier.uri http://digitallibrary.amnh.org/handle/2246/7263
dc.description 68 pages : illustrations (2 color) ; 26 cm. en_US
dc.description.abstract The Ricinulei Thorell, 1876, or "hooded tick-spiders," are among the rarest and least studied arachnid orders. Ricinoides Ewing, 1929, the only Old World genus of extant ricinuleids, with 11 species described from tropical West Africa, is the most neglected of the three genera currently recognized. A lack of attention to the systematics of Ricinoides has created a disparity between its taxonomic diversity and that of the New World genera, Cryptocellus Westwood, 1874, and Pseudocellus Platnick, 1980, in which many new species have been described in recent decades. The present contribution provides a revised diagnosis of Ricinoides, which includes two new, putative synapomorphies for the genus and addresses the systematics and morphology of a group of West African species, which includes the world's largest ricinuleids and the type species of the genus. This group of nine species, referred to as the "giant" Ricinulei, shares a unique combination of characters, many of which appear to be unique to the group, and appears to be monophyletic. Four species of this group are redescribed, with revised diagnoses, based on reexamination of the type material: Ricinoi des afzelii (Thorell, 1892), from Sierra Leone; Ricinoides atewa Naskrecki, 2008, from Ghana; Ric inoides feae (Hansen, 1921), from Guinea-Bissau; and Ricinoides westermannii (Guérin-Méneville, 1838), from Togo. Five new species are described, raising the number of species in the genus to 16: Ricinoides eburneus, sp. nov., and Ricinoides taii, sp. nov., from Côte d'Ivoire; Ricinoides iita, sp. nov., from Nigeria; Ricinoides kakum, sp. nov., from Ghana; and Ricinoides nzerekorensis, sp. nov., from Guinea. Comparative illustrations of the adult morphology are presented for all nine species. The male copulatory apparatus is described and illustrated in detail, and new terminology and characters presented. The female spermathecae are described and illustrated for six species in which the females are known, representing the first illustrated comparison of these structures in African ricinuleids. Geographical distribution records are revised and updated for the different species, and their distributions mapped. en_US
dc.language.iso en_US en_US
dc.publisher New York, NY : American Museum of Natural History en_US
dc.relation
dc.relation.ispartofseries Bulletin of the American Museum of Natural History;no. 448.
dc.subject Ricinoides -- Classification. en_US
dc.subject Ricinulei -- Africa, West -- Classification. en_US
dc.subject Spiders -- West Africa -- Classification. en_US
dc.subject Arachnida -- West Africa -- Classification. en_US
dc.title Systematics of the "giant" Ricinulei (Ricinoididae: Ricinoides) of West Africa : with descriptions of five new species and comparative morphology of the male copulatory apparatus. (Bulletin of the American Museum of Natural History, no. 448) en_US
dc.title.alternative Systematics of West African "giant" Ricinulei en_US
dc.type Book en_US


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  • Bulletin of the American Museum of Natural History
    The Bulletin, published continuously since 1881, consists of longer monographic volumes in the field of natural sciences relating to zoology, paleontology, and geology. Current numbers are published at irregular intervals. The Bulletin was originally a place to publish short papers, while longer works appeared in the Memoirs. However, in the 1920s, the Memoirs ceased and the Bulletin series began publishing longer papers. A new series, the Novitates , published short papers describing new forms.

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