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      Pedicelliops gen. nov., a new genus from West Africa with striking antennae (Ephemeroptera, Baetidae)

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      African Invertebrates

      Pensoft Publishers

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          Abstract

          A new genus of Baetidae, Pedicelliops gen. nov., and a new species, P. capillifer sp. nov., are described from Guinea (West Africa) based on larvae. The new genus is characterized by having strongly enlarged pedicelli and very short flagella, a brush of dense, short setae between prostheca and mola of both mandibles, a small rectangular labrum, an apicolaterally pointed maxillary palp, a labial palp with a small distolateral protuberance and long setae ventrally on glossae and paraglossae. The femora of all legs are covered with numerous long, fine setae. The patellotibial suture is absent on the fore tibia and present on middle and hind tibiae. The claw is pointed with two rows of denticles. No spines are present on the posterior margins of the abdominal tergites. The imago remains unknown and the relationships with other African genera of Baetidae remains tentative. Despite being easily identifiable and of a fairly large size (body length ca. 5 mm), only two larvae were found in two highly sampled localities in West Africa.

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          Most cited references 20

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          The Phylogenetic System of Ephemeroptera

           Nikita Kluge (2004)
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            Towards a new paradigm in mayfly phylogeny (Ephemeroptera): combined analysis of morphological and molecular data

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              Phylogeny of Ephemeroptera (mayflies) based on molecular evidence.

              This study represents the first molecular phylogeny for the Order Ephemeroptera. The analyses included 31 of the 37 families, representing approximately 24% of the genera. Fifteen families were supported as being monophyletic, five families were supported as nonmonophyletic, and 11 families were only represented by one species, and monophyly was not testable. The suborders Furcatergalia and Carapacea were supported as monophyletic while Setisura and Pisciforma were not supported as monophyletic. The superfamilies Ephemerelloidea and Caenoidea were supported as monophyletic while Baetoidea, Siphlonuroidea, Ephemeroidea, and Heptagenioidea were not. Baetidae was recovered as sister to the remaining clades. The mayfly gill to wing origin hypothesis was not supported nor refuted by these data. Mandibular tusks were supported as having at least one loss in Behningiidae and, together with the burrowing lifestyle, possibly two origins. The fishlike body form was supported as plesiomorphic for mayflies with multiple secondary losses. Topological sensitivity analysis was used as a tool to examine patterns concerning the stability of relationships across a parameter landscape, providing additional information that may not have been acquired otherwise.
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                Author and article information

                Contributors
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                Journal
                African Invertebrates
                AI
                Pensoft Publishers
                2305-2562
                1681-5556
                December 11 2020
                December 11 2020
                : 61
                : 2
                : 119-135
                Article
                10.3897/afrinvertebr.61.59354
                © 2020

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