Smicridea McLachlan (Trichoptera: Hydropsychidae) from mountain ranges in Bahia state, Brazil: new species and male-female associations

ABSTRACT

Smicridea McLachlan comprises 253 species divided into two subgenera: Smicridea and Rhyacophylax Müller. Smicridea (Smicridea) comprises species with males possessing two pairs of internal glands in abdominal segments VI and VII and hind legs bearing two pairs of spurs. Among species of this subgenus, those assigned to the Smicridea (Smicridea) fasciatella species group are characterized by a simple tubular phallus, presenting an apex with eversible sclerites. The aim of this paper is to describe and illustrate two new species in the S. (Smicridea) fasciatella species group and the female of Smicridea (Smicridea) capao Vilarino, Dias & Calor, 2019. Fieldwork was carried out in mountain ranges located in Bahia State, northeastern Brazil, both in the Atlantic Forest biome (Serra Bonita Reserve) and in the Caatinga biome (Chapada Diamantina Complex, Parque Municipal de Mucugê). Smicridea (Smicridea) kamakan sp. nov. and Smicridea (Smicridea) serrati sp. nov. can be recognized mainly by the morphology of tergum X and the inferior appendages. In addition, two couples of S. (Smicridea) capao were collected and resulted in the direct association of males and females; the female has a very conspicuous, oval sclerite VIII, with the apex constricted in the anterior portion, in ventral view.

urn:lsid:zoobank.org:pub:CF8BAE97-7D6B-4460-8A9D-35BBBACF2BE0

KEYWORDS:

• Aquatic insects
• taxonomy
• Atlantic Forest
• Caatinga
• Smicrideinae
• Chapada Diamantina Complex

Acknowledgments

We thank the LEAq team for collaboration and help in the fieldwork and laboratory analyses. The authors are grateful to Instituto Uiraçu (Serra Bonita reserve), especially Dr Vitor Becker and Mrs Clemira Souza, and to Parque Municipal de Mucugê, especially Adenilton Alves Oliveira Souza for assistance in the fieldwork. We also thank the Chico Mendes Institute for Biodiversity Conservation (ICMBio) for issuing collecting permits. GRD is grateful to Dr Beatriz Ronchi Teles (INPA) and Dr Neusa Hamada (INPA) for allowing the use of their laboratory infrastructure. We also thank the Invertebrate Collection of INPA for allowing the use of photographic equipment. We thank Philip M. Fearnside for revising this manuscript. We are grateful to the editor, Dr Stefan Vidal, for the assistance and we appreciate the very useful suggestions of the anonymous reviewers to improvethe manuscript.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) provided a doctoral fellowship for GRD (Process n. 141875/2018-6) and a research fellowship for ARC (Process n. 307794/2015-6). This study was partially funded by the Fundação de Amparo à Pesquisa do Estado da Bahia (FAPESB), Programa de Apoio à Pós-graduação (PROAP), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) [Finance Code 001], and by the following projects: Research Program in Biodiversity of the Semiarid (PPBio Semiárido/MCTi), Aquariparia (FAPESB process 0022/2013) and CNPq (Process n. 425060/2018-7).