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Issue: Vol. 4729 No. 1: 28 Jan. 2020
Type: Article
Published: 2020-01-28
DOI: 10.11646/zootaxa.4729.1.2
Page range: 25–46
Abstract views: 133
PDF downloaded: 2

A new highly dimorphic genus of Sminthuridae (Collembola: Symphypleona) from Brazil

Laboratório de Sistemática de Collembola e Conservação—Coleção de Referência de Fauna de Solo—CCBSA—Universidade Estadual da Paraíba, campus V. 58070-450 João Pessoa PB Brazil Programa de Pós-Graduação em Ciências Biológicas—Zoologia—CCEN—Universidade Federal da Paraíba. 58051-900 João Pessoa PB Brazil 3Programa de Pós-Graduação em Ciências Biológicas—Zoologia—Departamento de Entomologia—Museu Nacional Universidade Federal do Rio de Janeiro. 20940-040 Rio de Janeiro RJ Brazil
Laboratório de Sistemática de Collembola e Conservação—Coleção de Referência de Fauna de Solo—CCBSA—Universidade Estadual da Paraíba, campus V. 58070-450 João Pessoa PB Brazil Programa de Pós-Graduação em Ciências Biológicas—Zoologia—CCEN—Universidade Federal da Paraíba. 58051-900 João Pessoa PB Brazil
Gerência de Espeleologia, Vale S.A.
Laboratório de Sistemática de Collembola e Conservação—Coleção de Referência de Fauna de Solo—CCBSA—Universidade Estadual da Paraíba, campus V. 58070-450 João Pessoa PB Brazil Programa de Pós-Graduação em Ciências Biológicas—Zoologia—Departamento de Entomologia—Museu Nacional Universidade Federal do Rio de Janeiro. 20940-040 Rio de Janeiro RJ Brazil
Collembola Globular springtails Keratosminthurus gen. nov. new species Sminthurinae Temeritas

Abstract

A new genus and two new species of Sminthurinae are described. Keratosminthurus tapigu gen. nov. sp. nov. and K. calamitosus sp. nov. show a combination of features that redefines the subfamily Sminthurinae, such as a pair of sminthuroid chaetae, unguis without cavity, nine apical chaetae on tibiotarsus, 11 or more anterior dental chaetae, fourth antennal segment clearly subdivided into many (18 or more) subsegments, and asymmetric apex of mucro. The new genus also presents a striking sexual dimorphism, with modifications on male apical organ of antennal segment III, spines on the clypeus and special organs on the interocular area.

 

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