Arquivo de Taxonomia e Sistemática -

A new species of Rhigus Schoenherr, 1823 (Curculionidae, Entiminae, Entimini) from Brazil

Mila Massuda — Mon, 05 Oct 2026 19:54:38 +0000

RESUMO: The genus Rhigus Schoenherr, 1823 comprises 13 species with distributions restricted to South America, especially in the Atlantic forest where nine of the species are found. Herein, we describe Rhigus yvaga Maffra, Ferreira and Mermudes sp. nov. occurring in Brazilian Amazonian and Cerrado biomes. This study provides a new species record for the amazonian biome which expands the distribution of Rhigus and reinforces that the group is more diverse than previously recognized.

doi: https://doi.org/10.11646/zootaxa.5884.3.11

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A new Cleidella species (Coleoptera: Phengodidae) endemic to the Brazilian Atlantic Rainforest

Mila Massuda — Mon, 05 Oct 2026 19:52:14 +0000

RESUMO: Cleidella Roza & Mermudes, 2020 is a small genus of Mastinocerinae currently known only from montane areas of the Atlantic Rainforest of Rio de Janeiro State, Brazil. The genus comprises two species, C. picea Roza & Mermudes, 2020 and C. silveirai Roza & Mermudes, 2020, recorded from Parque Nacional da Serra dos Órgãos and Parque Estadual da Ilha Grande. Here, we describe a third species, C. correcta sp. nov., from the Parque Estadual do Desengano, northern Rio de Janeiro State. The new species resembles C. picea in overall coloration but differs mainly by the size and shape of the eyes, and length of antennomeres. We provide a diagnosis, description, illustrations and an updated identification key to the species of Cleidella. The discovery of C. correcta reinforces the importance of Atlantic Rainforest montane areas as centers of endemism of soft-bodied beetles, like Phengodidae, and highlights the still poorly known diversity of Mastinocerinae in southeastern Brazil.

doi: https://doi.org/10.11646/zootaxa.5881.3.6

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Synopsis of the Genera of Eucanthini Nikolajev, 2002 (Coleoptera: Geotrupidae), With Two New Genera From Australia and South America

Mila Massuda — Mon, 05 Oct 2026 19:50:12 +0000

RESUMO: Here, we review the generic classification of Eucanthini, resulting in the redefinition of Eucanthus Westwood, 1848 and erection of two new genera. Under this new framework, Eucanthus is restricted to six North American species, while two monotypic genera are described from the Southern Hemisphere: Antoniocanthus gen. nov. from South America and Henrycanthus gen. nov. from Australia. We provide revised diagnoses for the tribe and its genera, along with an identification key to facilitate genus-level recognition. In addition, we update distributional data and provide images to facilitate identification of these groups

doi: https://doi.org/10.1111/aen.70103

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Catalogue of type specimens deposited in the Coleção Entomológica de Mato Grosso Eurides Furtado – CEMT (Cuiabá, Mato Grosso, Brazil)

Mila Massuda — Mon, 05 Oct 2026 19:46:39 +0000

RESUMO: The current Coleção Entomológica de Mato Grosso Eurides Furtado—CEMT, located in Cuiabá, Mato Grosso, Brazil, was officially established in 1987 as a regional entomological collection. Since 2008, it has undergone a transformation into a reference entomological collection (primarily focused on Coleoptera) and is now recognized both nationally and internationally. Today, the CEMT houses more than one million prepared and identified specimens. Thanks to high productivity in taxonomy and strategic collaborations, the collection has received extensive deposits of material, including type specimens from numerous historical and recent taxonomic revisions. The goal of this work was to compile a catalogue of all type specimens deposited at the CEMT up to 2024. To achieve this, a bibliographic survey was conducted of taxonomic publications describing new species based on material housed at the CEMT. The cited specimens were then located, along with type material from the FZVM collection (incorporated into the CEMT in 2008) and additional specimens donated but not cited in publications. Each specimen was labeled with a collection number and QR code, and its associated data were digitized into spreadsheets following the Darwin Core standard. The labels were described and the data transcribed verbatim. Holotypes were stored separately in acrylic boxes (when size permitted) and separated from the other specimens in the collection. The collection currently comprises 7, 250 type specimens with 233 holotypes, 6 paralectotypes, 4 neotypes and 7, 007 paratypes, representing eight orders, 39 families, 284 genera and 758 species; Coleoptera account for 99.47% of the type material and Diptera, Hemiptera, Hymenoptera, Lepidoptera, Mecoptera, Neuroptera, and Orthoptera together represent 0.53%. However, some Lepidoptera type specimens are missing, as the personal collection of researcher Eurides Furtado was only recently incorporated into the CEMT.

doi: https://doi.org/10.11646/zootaxa.5879.1.1

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Bye-bye Bicellonycha Motschulsky, 1853: a solution to an overlooked nomenclatural issue, with description of a new genus and comprehensive redescription of its type species (Coleoptera: Lampyridae: Photurinae)

Mila Massuda — Mon, 05 Oct 2026 19:30:34 +0000

RESUMO: The stability and universality of firefly taxonomy hinge on the lack of revisionary studies, such as those addressing the validity of taxon names, including widely used ones like Bicellonycha Motschulsky, 1853. This is one of five genera of predatory fireflies (Lampyridae, Photurinae), with 45 species distributed across the Americas. Motschulsky designated Lampyris albilatera Gyllenhal, 1817 as type species of Bicellonycha, but later suspicion by earlier taxonomists – including Laporte and Olivier – led McDermott to designate Bicellonycha deleta Motschulsky, 1854 as type, which remains undisputed. However, B. deleta was not available when Bicellonycha was described by Motschulsky a year earlier, and thus cannot be designated as the type species. In addition, the type material of B. deleta remains as a single elytron, and the original taxonomic description is insufficient to confidently identify it, raising instability further. Here, we address this pervasive nomenclatural issue of the typification of Bicellonycha. We confirm (i) the validity of Motschulsky’s typification of L. albilatera by original designation, and (ii) the longstanding suspicion that Motschulsky misidentified this genus’ type species, which lacks Photurinae diagnostic traits but fits Photinus (Lampyrinae: Lucidotini) seamlessly, instead. In accepting Motschulsky’s typification, we enforce an overlooked synonymy of Bicellonycha and Photinus (which takes priority) put forth by Lacordaire (1857), and describe Santiagonycha gen. nov. to encompass those 45 species previously placed in Bicellonycha. Santiagonycha lineola (Blanchard, 1845) comb. nov., designated as type species, is herein thoroughly redescribed from all life stages, to serve as reference for a future revision of this genus. Although we recognize this nomenclatural change brings about temporary instability, we are confident it sets the stage for a more solid lampyrid taxonomy.

doi: https://doi.org/10.1016/j.jcz.2026.08.012

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Two new Hypselotropis (Coleoptera Anthribidae, Anthribinae, Ptychoderini) species from the Amazon Biome and first report for the family of two setiferous sex patches on male abdominal ventrites

Mila Massuda — Mon, 05 Oct 2026 19:27:22 +0000

RESUMO: The genus Hypselotropis, belonging to the Anthribidae family (fungus weevils) and the Ptychoderini tribe, comprises 19 species predominantly distributed in the Neotropical region. The genus exhibits high diversity and structural modifications in males that suggest sexual selection. This study aimed to describe two new species of Hypselotropis collected in the Brazilian Amazon and to document a significant sexual character for the family. Hypselotropis yanomami sp. n. is described from Serra da Mocidade (Roraima State), a region in the northern Brazilian Amazon with limited accessibility and few previous scientific studies. Hypselotropis mura sp. n. is described from Careiro Castanho, a municipality also located in the Amazon biome (Amazonas State). An updated taxonomic key to all known Hypselotropis species is provided, along with new data on the distribution of the genus. Additionally, setiferous sex patches on abdominal ventrites I and II of males of Hypselotropis yanomami sp. n. is reported, a sexually dimorphic characteristic recorded for the first time in the family Anthribidae.

doi: https://doi.org/10.1007/s11756-026-02246-w

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Raphael Pires Ferreira

Silvia Altoé Falqueto — Thu, 01 Oct 2026 19:24:00 +0000

Universidade Federal de Mato Grosso (UFMT) – MT

Cientista da computação, com atuação extensiva na área de engenharia de dados, tanto acadêmica como financeira. Também, responsável pela implantação do Taxon Works no INCOL, buscando a sistematização dos registros de espécimes do Instituto.

Interesses: Ciência da computação, engenharia de dados, gestão da informação

Eixo: Taxonomia

Lattes

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Brazilian Cerambycinae and Lamiinae (Coleoptera, Cerambycidae): new species, synonymy, and notes

Mila Massuda — Tue, 15 Sep 2026 21:29:31 +0000

RESUMO: Two new species are described from Brazil: Achryson tanabeae sp. nov. (Cerambycinae, Achrysonini), from Piauí; and Polymitoleiopus baduyi sp. nov. (Lamiinae, Acanthocinini), from Minas Gerais. An updated key to species of Achryson Audinet-Serville, 1834 is provided. Achryson immaculipenne humeromaculatum Tippmann, 1960 is synonymized under Ochrus tippmanni (Lane, 1956) (Cerambycinae, Hesperophanini). The male holotype of Achryson bucki Fuchs, 1961 and a paratype of Jabaquara tippmanni Lane, 1956 are illustrated for the first time. The problematic publication date of Volume 7, Number 4, of the “Revista Brasileira de Zoologia” is discussed.

doi: https://doi.org/10.11646/zootaxa.5878.3.5

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Revision of the Neotropical Genus Brachysiderus Waterhouse, 1881 (Coleoptera: Scarabaeidae), Revealing a New Species Among Historical Specimens From the Andes

Mila Massuda — Tue, 15 Sep 2026 21:26:40 +0000

RESUMO: Species of the genus Brachysiderus Waterhouse, 1881 (Dynastinae), are revised, redescribed, and illustrated based on males and females, when available. A new species, Brachysiderus andinus sp. nov., previously treated in the collections and in the literature as Brachysiderus quadrimaculatus Waterhouse, 1881, is described from the Peruvian Andes. Brachysiderus tridentiger (Prell, 1934) stat. rev. and Brachysiderus breyeri (Martínez, 1963) stat. rev. are reinstated at the species level. Identification keys for males and females are provided, along with a new distribution map including new records from Bolivia and Brazil.

doi: https://doi.org/10.1111/aen.70102

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A Taxonomic Synopsis of Aclopus Erichson, 1835, With The Description of a New Genus and Four New Species (Coleoptera: Melolonthidae)

Mila Massuda — Tue, 15 Sep 2026 21:22:03 +0000

RESUMO: The South American genus Aclopus Erichson, 1835, is herein treated in a taxonomic synopsis. Aclopus wuenschei Ohaus, 1912 syn. nov. is proposed as a junior synonym of Aclopus vittatus Erichson, 1835, and three new species of Aclopus are described: Aclopus extrema sp. nov., Aclopus frieirocostai sp. nov. and Aclopus godinhorum sp. nov. Notes on the natural history of A. frieirocostai are also given. Furthermore, Allsoppaclopus gen. nov. is described to include Allsoppaclopus intermedius (Blanchard, 1850) comb. nov. and Allsoppaclopus dzupi sp. nov. Diagnoses, illustrations, distribution maps and identification keys for Aclopus and Allsoppaclopus species, as well as for the genera of Aclopinae, are also provided.

doi: https://doi.org/10.1111/aen.70091

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