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Issue: Vol. 4402 No. 3: 29 Mar. 2018
Type: Article
Published: 2018-03-29
DOI: 10.11646/zootaxa.4402.3.5
Page range: 508–524
Abstract views: 50
PDF downloaded: 4

Five new species of Ytu Reichardt (Coleoptera: Myxophaga: Torridincolidae) and new records from Brazil

Laboratório de Entomologia, Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro. Caixa Postal 68044, Rio de Janeiro, RJ, 21941-971, Brasil.
Laboratório de Entomologia, Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro. Caixa Postal 68044, Rio de Janeiro, RJ, 21941-971, Brasil.
Coleoptera aquatic beetles Atlantic Rainforest Neotropical Region torrent beetles

Abstract

The genus Ytu Reichardt is the most diverse within Torridincolidae, currently with 19 species. Five new species are described herein, four of them from various localities in the southeast of Brazil (type localities in parentheses): Ytu hermes sp. nov. (Brazil, Espírito Santo, Dores do Rio Preto, Pedra Menina, Parque Nacional do Caparaó, Cachoeira Sete Pilões); Ytu hypnos sp. nov. (Brazil, Rio de Janeiro, São Fidelis, Serra Bela Joana); Ytu nyx sp. nov. (Brazil, Espírito Santo, Dores do Rio Preto, Pedra Menina, Parque Nacional do Caparaó, Rio São Domingos, Cachoeira do Aurélio); Ytu thanatos sp. nov. (Brazil, Espírito Santo, Castelo, Parque Estadual do Forno Grande). The other new species, Ytu coeus sp. nov. (Brazil, Espírito Santo, Dores do Rio Preto, Pedra Menina, Parque Nacional do Caparaó, nascente do Rio São Domingos) is described from Brazilian States of Espírito Santo and Ceará, the latter being the first record of this genus in northeastern Brazil. Illustrations of habitus and important diagnostic characters are provided. The new species are compared to other similar species of the genus. New records of some other species of Ytu are presented.

 

References

  1. Braule-Pinto, V.A., Fonseca, C.R.V. & Hamada, N. (2011) Iapir quadridentatus sp. nov., a new torridincolid beetle from Brazil (Coleoptera: Myxophaga: Torridincolidae). Zootaxa, 3031, 47–53.

    Hájek, J. & Fikáček, M. (2008) A review of the genus Satonius (Coleoptera: Myxophaga: Torridincolidae): taxonomic revision, larval morphology, notes on wing polymorphism, and phylogenetic implications. Acta Entomologica Musei nationalis Pragae, 48 (2), 665–676.

    Reichardt, H. (1973) A critical study of the suborder Myxophaga, with a taxonomic revision of the Brazilian Torridincolidae and Hydroscaphidae (Coleoptera). Arquivos de Zoologia, 24, 73–162.
    https://doi.org/10.11606/issn.2176-7793.v24i2p73-162

    Reichardt, H. & Vanin, S.A. (1977) The torridincolid genus Ytu (Coleoptera, Myxophaga). Papéis Avulsos de Zoologia, 31, 119–140.

    Shepard, W.D., Barr, C.B. & Julio, C.A.A. (2013) The occurrence of Torridincolidae (Coleoptera Myxophaga) in Paraguay and a world checklist of species. Boletín del Museo Nacional de Historia Natural del Paraguay, 17, 76–82.

    Vanin, S.A. (1991) Ytu cleideae, a new species of torridincolid from Mato Grosso, Brazil (Coleoptera, Torridincolidae). Revista Brasileira de entomologia, 35 (3), 573–576.