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Issue: Vol. 4496 No. 1: 5 Oct. 2018
Type: Article
Published: 2018-10-04
DOI: 10.11646/zootaxa.4496.1.35
Page range: 459–471
Abstract views: 78
PDF downloaded: 1

Three new species of Holoscolex (Clitellata, Glossoscolecidae) from the Gurupi Biological Reserve, last forest remnant of the Belém Endemism Area, Eastern Amazon

Postgraduate Program in Agroecology, Maranhão State University (UEMA), Avenida Lourenço Vieira da Silva 1000, Campus Universitário Paulo VI, Jardim São Cristovão, 65.055-310 São Luís, MA, Brazil
Postgraduate Program in Agroecology, Maranhão State University (UEMA), Avenida Lourenço Vieira da Silva 1000, Campus Universitário Paulo VI, Jardim São Cristovão, 65.055-310 São Luís, MA, Brazil
Museu Paraense Emílio Goeldi, Av. Perimetral, 1901, 66077–830 Belém-PA, Brazil
Postgraduate Program in Agroecology, Maranhão State University (UEMA), Avenida Lourenço Vieira da Silva 1000, Campus Universitário Paulo VI, Jardim São Cristovão, 65.055-310 São Luís, MA, Brazil
Sustainable Living Department, Maharishi University of Management, Fairfield IA, United States
Annelida Earthworm Brazil Maranhão Annelids Glossoscolecidae Oligochaeta

Abstract

We describe three new species of the earthworm genus Holoscolex from the Gurupi Biological Reserve in Maranhão state, Brazil. The Reserve, with the Indigenous Territories Awá, Caru, Alto Turiaçu and Alto Rio Guamá represent the last continuous forest remnants of the Belém Endemism Area, the most deforested and threatened area of Brazilian Amazonia. Holoscolex dossantosi sp. nov. has tubercula pubertatis looking like double bands, Holoscolex alatus sp. nov. presents alate tubercula pubertatis, and Holoscolex fernandoi sp. nov. has testis sacs and several intraclitellar atrial glands associated with genital markings between XIX and XXII. The presence of these unusual characters in Holoscolex fernandoi sp. nov. suggests that this species could be an evolutionary transitional stage linking Eudrilidae and more recent Glossoscolecidae genera.

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