Diochus cleidecostae, a new species from the Brazilian Amazon and a discussion of the sexual dimorphism on sternum VIII (Coleoptera: Staphylinidae: Staphylininae: Diochini)

Authors

  • Edilson Caron Universidade Federal do Paraná (UFPR), Departamento de Biodiversidade (DBD) - Palotina, PR, Brasil. http://orcid.org/0000-0001-7136-2218
  • Bruna V. Navarro Universidade Federal do Paraná (UFPR), Departamento de Biodiversidade (DBD) - Palotina, PR, Brasil.
  • Reinaldo L. Cajaiba Instituto Federal de Educação, Ciência e Tecnologia do Maranhão (IFMA) - Buriticupu, MA, Brasil. http://orcid.org/0000-0003-0176-9201

DOI:

https://doi.org/10.11606/1807-0205/2020.60.special-issue.31

Keywords:

Amazon, Morphology, Neotropical, Rove beetles, Taxonomy

Abstract

Diochus Erichson is a worldwide rove beetle genus with species found in forest floor litter. Three species of Diochus were recently collected in northern Brazil, one of them considered as new and herein described. Within Diochus nanus-group, D. cleidecostae sp. nov. differs from D. apicipennis Cameron, D. nanus Erichson and D. perplexus Cameron by the aedeagus with clearing trifurcate apex of parameres; and differs from D. parvulus Kraatz by the three apical long setae of parameres distributed on ventral and dorsal lobes. A previous key to the D. nanus-group is updated to include the new species. Here we also report for the first time D. santacatarinae Irmler and D. parvulus from Pará state, Brazil. Finally, a discussion about the sexual dimorphism on sternum VIII is also provided for the genus.

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Author Biographies

Edilson Caron, Universidade Federal do Paraná (UFPR), Departamento de Biodiversidade (DBD) - Palotina, PR, Brasil.

Avenida Pioneiro, 2.153, Jardim Dallas, CEP 85950-000, Palotina, PR, Brasil.

Bruna V. Navarro, Universidade Federal do Paraná (UFPR), Departamento de Biodiversidade (DBD) - Palotina, PR, Brasil.

Avenida Pioneiro, 2.153, Jardim Dallas, CEP 85950-000, Palotina, PR, Brasil.

Reinaldo L. Cajaiba, Instituto Federal de Educação, Ciência e Tecnologia do Maranhão (IFMA) - Buriticupu, MA, Brasil.

Rua Deputado Gastão Vieira, 1.000, Vila Mansueto, CEP 65393-000, Buriticupu, MA, Brasil.

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Published

2020-03-04

How to Cite

Caron, E., Navarro, B. V., & Cajaiba, R. L. (2020). Diochus cleidecostae, a new species from the Brazilian Amazon and a discussion of the sexual dimorphism on sternum VIII (Coleoptera: Staphylinidae: Staphylininae: Diochini). Papéis Avulsos De Zoologia, 60(special), e202060(s.i.).31. https://doi.org/10.11606/1807-0205/2020.60.special-issue.31

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