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Issue: Vol. 5406 No. 1: 2 Feb. 2024
Type: Article
Published: 2024-02-02
DOI: 10.11646/zootaxa.5406.1.6
Page range: 123-140
Abstract views: 72
PDF downloaded: 4

Updates on the taxonomy of Ilyobius nubilus (Navás, 1933) (Megaloptera: Sialidae: Sialinae) and Ilyobius brasiliensis (Navás, 1936) from southeastern Brazil

Coordenação de Biodiversidade-CoBio; Programa de Pós-Graduação em Entomologia (PPGEnt); Instituto Nacional de Pesquisas da Amazônia; Manaus; AM; Brazil
Universidade Federal do Pará; Programa de Pós-Graduação em Zoologia; Belém; PA; Brazil
Departamento de Hidrobiologia; Universidade Federal de São Carlos (UFSCar); São Carlos; SP; Brazil
Coordenação de Biodiversidade-CoBio; Programa de Pós-Graduação em Entomologia (PPGEnt); Instituto Nacional de Pesquisas da Amazônia; Manaus; AM; Brazil
Megaloptera Aquatic insects alderflies larva Neotropical region

Abstract

Species of the Neotropical genus Ilyobius Enderlein, 1910 (Megaloptera: Sialidae) are rare and poorly known because adults are infrequently collected in the field and the larvae have restricted habitat in the stream, facts that make obtaining specimens difficult to access for study. Herein we redescribe the female, describe the male and the larva of Ilyobius nubilus (Navás, 1933) based on specimens collected on the coast of São Paulo State. Adults were obtained mainly by rearing larvae in laboratory condition until adult emergence. The holotype for Ilyobius brasiliensis (Navás, 1936) was examined, and we contand that it is a valid species. Therefore, we do not corroborate its synonymy with I. nubilus. Ilyobius nubilus is a member of the I. chilensis group, and the male genitalia structure, described in this work, also supports its inclusion in this species group.

 

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