Arumatia, a new genus of Diapheromerinae stick insects (Insecta, Phasmatodea) from Brazil, with description of five new species and reassessment of species misplaced in Australian genera

  • Two species of stick insect with a distinctive morphology, Candovia evoneobertii (Zompro & Adis, 2001) and Echetlus fulgens Zompro, 2004, were considered to be native to Australia and introduced into Brazil. However, Heteronemia dubia (Caudell, 1904) and Heteronemia fragilis (Brunner von Wattenwyl, 1907), both described more than a hundred years ago from South America, exhibit striking similarities with the two purportedly introduced species and are found to be conspecific with C. evoneobertii. Careful analysis of the literature and specimens revealed that these species belong to the Neotropical tribe Diapheromerini (Diapheromeridae) and represent a new genus, Arumatia Ghirotto gen. nov. We therefore propose Arumatia fulgens (Zompro, 2004) gen. et comb. nov. and Arumatia dubia (Caudell, 1904) gen. et comb. nov. We further redescribe A. dubia (Caudell, 1904) gen. et comb. nov. based on several specimens and synonymize Heteronemia fragilis syn. nov. and Candovia evoneobertii syn. nov. under it. Additionally, five new Brazilian species are described: Arumatia diamante Ghirotto gen. et sp. nov. from Abaíra, Bahia; Arumatia aramatia Ghirotto gen. et sp. nov. from Porto Nacional, Tocantins; Arumatia motenata Ghirotto gen. et sp. nov. from Serra do Cipó, Minas Gerais; Arumatia crassicercata Ghirotto, Crispino & Engelking gen. et sp. nov. from Alto Paraíso de Goiás, Goiás; and Arumatia anyami Ghirotto, Crispino & Neves gen. et sp. nov. from Costa Marques, Rondônia. Species of Arumatia gen. nov. occur mostly in the Cerrado domain, and represent the first Diapheromeridae recorded in this area. Most species are known exclusively from females with only A. aramatia gen. et sp. nov. and A. motenata gen. et sp. nov. known from both sexes. Adult and egg morphology are described and illustrated in detail for all species, as well as the nymph stages for A. dubia. Biological observations are presented, including parthenogeny in A. dubia and one of the few detailed accounts of sexual behaviour in Euphasmatodea (for A. motenata gen. et sp. nov.). Finally, a species of Diapheromerini described in error from Brazil, Diapheromera armata Piza, 1973, is synonymized under the North American Megaphasma denticrus (Stål, 1875) (syn. nov.).

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Author:Victor Morais GhirottoORCiD, Edgar Blois CrispinoORCiD, Phillip Watzke EngelkingORCiD, Pedro Alvaro Barbosa Aguiar NevesORCiD, Júlia de GóisORCiD, Pedro Ivo Chiquetto-MachadoORCiD
URN:urn:nbn:de:hebis:30:3-686260
DOI:https://doi.org/10.5852/ejt.2022.827.1849
ISSN:2118-9773
Parent Title (German):European journal of taxonomy
Series (Serial Number):European journal of taxonomy : EJT (827)
Publisher:Muséum National d'Histoire Naturelle
Place of publication:Paris
Document Type:Article
Language:English
Date of Publication (online):2022/07/04
Date of first Publication:2022/07/04
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2022/07/04
Tag:Candovia; Diapheromeridae; Echethus; Neotropical; Phasmida
Volume:2022
Issue:827
Page Number:85
First Page:1
Last Page:85
HeBIS-PPN:503969532
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 59 Tiere (Zoologie) / 590 Tiere (Zoologie)
Sammlungen:Sammlung Biologie / Sondersammelgebiets-Volltexte
Journal:urn:nbn:de:hebis:30:3-257882
Licence (German):License LogoCreative Commons - Namensnennung 4.0