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Type: Article
Published: 2021-08-20
Page range: 451-485
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“Flying” or digging? The trapdoor spider genus Neocteniza Pocock, 1895: Redescription of three species, new records from Brazil, notes on natural history and first record of ballooning for Idiopidae (Araneae, Mygalomorphae)

Programa de Pós-graduação em Ciências Biológicas (Zoologia), Departamento de Biodiversidade, Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, São Paulo, Brazil;
Departamento de Biodiversidade, Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, São Paulo, Brazil;
Programa de Pós-graduação em Ciências Biológicas (Zoologia), Departamento de Biodiversidade, Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, São Paulo, Brazil;
Departamento de Biodiversidade, Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, São Paulo, Brazil; Laboratório de Coleções Zoológicas, Instituto Butantan, São Paulo, São Paulo, Brazil.
Departamento de Biodiversidade, Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, São Paulo, Brazil;
Araneae Genysinae stridulatory apparatus sexual dimorphism haematodocha Cerrado Atlantic Forest behavior


The Neotropical trapdoor spider genus Neocteniza Pocock, 1895 is distributed throughout Central and South America. The genus currently comprises 18 species and little is known about the biology of these spiders. We provide an amended diagnosis for the genus Neocteniza and the species: N. minima Goloboff, 1987, N. australis Goloboff, 1987 and N. toba Goloboff, 1987, and also redescribe them. We include new records of these species from Brazil and notes on natural history of N. toba, providing data on burrow structure, diet, development and the first record of ballooning behavior for Idiopidae. We propose a terminology for the genitalia and consider homology among genital structures and among possibly stridulatory structures. We also discuss relationships of Neocteniza with other Idiopidae, stressing the uniqueness of the genus and its differences from all other Idiopidae including other Genysinae.



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