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Published: 2026-05-21
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Filling gaps of knowledge in the Atlantic Forest: The caddisflies from Parque Nacional do Caparaó and its surroundings, southeastern Brazil, including three new species of Marilia Müller, 1880 (Insecta: Trichoptera: Odontoceridae)

Laboratório de Entomologia; Departamento de Zoologia; Instituto de Biologia; Universidade Federal do Rio de Janeiro – UFRJ; Caixa Postal 68044; Cidade Universitária; 21941-971; Rio de Janeiro; RJ; Brazil.
Laboratório de Entomologia; Departamento de Zoologia; Instituto de Biologia; Universidade Federal do Rio de Janeiro – UFRJ; Caixa Postal 68044; Cidade Universitária; 21941-971; Rio de Janeiro; RJ; Brazil.
Laboratório de Entomologia; Departamento de Zoologia; Instituto de Biologia; Universidade Federal do Rio de Janeiro – UFRJ; Caixa Postal 68044; Cidade Universitária; 21941-971; Rio de Janeiro; RJ; Brazil.
Laboratório de Sistemática de Trichoptera; Departamento de Entomologia; Museu Nacional UFRJ; Campus de Pesquisa e Ensino do Museu Nacional; Avenida Bartolomeu de Gusmão; 875 - São Cristóvão; Rio de Janeiro; RJ; Brasil
Laboratório de Entomologia; Departamento de Zoologia; Instituto de Biologia; Universidade Federal do Rio de Janeiro – UFRJ; Caixa Postal 68044; Cidade Universitária; 21941-971; Rio de Janeiro; RJ; Brazil.
Departamento de Entomologia; Museu Nacional/UFRJ; Campus de Pesquisa e Ensino do Museu Nacional; Avenida Bartolomeu de Gusmão; 875 - São Cristóvão; Rio de Janeiro; RJ; Brasil
Laboratório de Insetos Aquáticos – LABIA; Departamento de Biologia Animal; Instituto de Ciências Biológicas e da Saúde; Universidade Federal Rural do Rio de Janeiro – UFRRJ; Rodovia BR 465; Km 7; Seropédica; RJ; Brazil.
Trichoptera Aquatic insects taxonomy, new taxa, Arctiinae, Syntomini, checklist, moth Biodiversity Hotspot Neotropics Integrative taxonomy

Abstract

The caddisflies (Trichoptera) of Parque Nacional do Caparaó (PNC), a federal conservation unit located on the border between the states of Espírito Santo and Minas Gerais in southeastern Brazil, are inventoried and cataloged here. The park, entirely situated within the Atlantic Forest biome, encompasses a wide elevational range, from around 800 m in the lower areas to 2,892 m at Pico da Bandeira, the third-highest peak in Brazil. Herein, we describe three new species of Marilia (Odontoceridae): Marilia bandeira sp. nov., Marilia bonita sp. nov., and Marilia farofa sp. nov. Additionally, we provide a comprehensive checklist of caddisflies from the PNC. A total of 123 species, 39 genera, and 14 families of caddisflies were identified, with 27 species and one genus representing new distributional records for the states of Espírito Santo and Minas Gerais. The families with the highest species richness are Hydroptilidae and Leptoceridae with 22 and 21 species respectively, followed by Philopotamidae (16 spp.), Hydropsychidae and Polycentropodidae (12 spp.). This work makes a significant contribution toward reducing knowledge gaps on caddisflies in the Atlantic Forest, caused by both Wallacean and Linnean shortfalls.

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