Papéis Avulsos de Zoologia – ISSN (online) 1807-0205 and ISSN (print) 0031-1049 – is a peer-reviewed open-access scientific journal that primarily covers the areas of Zoology, publishing original contributions in systematics, paleontology, evolutionary biology, ecology, taxonomy, anatomy, behavior, functional morphology, molecular biology, ontogeny, faunistic studies, and biogeography.
Universidade de São Paulo (USP), Museu de Zoologia (MZUSP).
Responsibility: The scientific content and the opinions expressed in the manuscript are the sole responsibility of the author(s). Copyrights: The Authors. The journal is licensed under a Creative Commons attribution-type CC-BY.
ISSN Identifier Correction for Volumes 64 to 66 following the discontinuation of the print version
Copyright (c) 2026 Editorial Board https://creativecommons.org/licenses/by/4.0
A passion for longhorn beetles: the life and work of our teacher Miguel A. Monné (1938-2024)
Copyright (c) 2026 Mario Cupello, Juan Pablo Botero, Marianna Vieira dos Passos Simões https://creativecommons.org/licenses/by/4.0
Cecidomyiidae (Diptera): richness and distribution in the Amazonian forest
The present study aimed to survey the richness and distribution of gall midge species (Cecidomyiidae) in the Amazon forest. Additionally, we compilated data on the characterization of insect galls and host plant species identification, and developed a taxonomic key of gall midge genera registered in the Amazon forest. For this, data were obtained from the literature, but also from papers containing the original description of each gall midge species. A total of 31 gall midge species have been recorded in the Amazonian forest, with the majority reported in the Brazilian Amazon (29) and two species found in the Peruvian Amazon. The genera Lopesia was the best represented among gall midges. Calophyllaceae were the plant family with the greatest number of gall midge species. Leaves were the most attacked plant organ (74%). Most morphotypes are globoid (75%), green (42%), glabrous (58%), and one-chambered (55%). The state of Amazonas (Brazil) and the department of Loreto (Peru) recorded the highest number of gall-inducing species. Furthermore, 17 gall midges species were described from the Brazilian Amazon, while only two species were described from the Peruvian Amazon. The remaining species (12) were described from other biomes and latter recorded in the Amazon forest. In the 20th and 21st centuries, 13 and six gall midges species were described, respectively, being Rübsaamen and Maia the authors who described the highest number of species. After 1921, there was an 85 years interval without new taxonomic contributions until 2006, when two new species were described from the Amazon forest. The taxonomic key for gall midge genera stands out as one of the few available for distinguishing genera in the Neotropical region, facilitating the work of taxonomists. It is also the first taxonomic key specifically designed for this phytogeographic domain. In order to fill these gaps in the taxonomic information on gall-inducing insect species in the Amazon forest, more efforts are needed in the identification and description of gall-inducing species, particularly within the family Cecidomyiidae.
Copyright (c) 2026 Julio Miguel Grandez-Rios, Walter Santos de Araújo, Valéria Cid Maia https://creativecommons.org/licenses/by/4.0
Specimens lost, biodiversity data preserved: Part I. A revised and illustrated catalog of the name-bearing types of grasshoppers (Orthoptera: Romaleidae) from the Entomological Collection of the Museu Nacional/UFRJ, Brazil
The Entomological Collection of the Museu Nacional/UFRJ, Brazil (MNRJ), served as the primary repository for Brazilian Orthoptera (Insecta), housing the country’s largest assemblage of this order and one of the most prominent in South America. This paper presents a revised and illustrated catalog of the name-bearing specimens (types) of grasshoppers (Orthoptera: Romaleidae) from the MNRJ. These types and their respective primary biodiversity data were digitized during on-site inspections by the Brazilian national biodiversity platform, Sistema de Informação sobre a Biodiversidade Brasileira (SiBBr). A historical overview of the Orthoptera Collection from the MNRJ is provided. A total of 61 species nomina were recorded, comprising 59 holotypes and 2 neotypes, belonging to 24 genera, 4 subtribes, 9 tribes, and 2 subfamilies. The complete type series of the species nomina related to the types were also surveyed, detailing their catalog numbers, type status, figures, type localities, main references, primary data, total number of the type series along with the collections where they were originally destined, and essential links. All types were originally destined for MNRJ, except the holotype of Pseudonautia nigrithorax Descamps, 1978 (FHCE, Uruguay). The neotype of Acridium olfersii Burmeister, 1838 from the MNRJ may become invalid in view of the apparent rediscovery of syntypes in the MLUH, Germany. We also discuss the use of terms not recognized by the International Code of Zoological Nomenclature (ICZN) – ‘neoholotype’ and ‘neoparatype’ – while clarifying the status of “true” versus “fake” types. All types digitized by the SiBBr were lost in the Palácio de São Cristóvão fire on September 2, 2018. However, no name-bearing specimens belonging to 47 species nomina, destined for external collections, likely remain preserved. Conceived for a special volume honoring Prof. Dr. Miguel A. Monné, this paper updates his previous type catalogs by resolving numerical/typographical discrepancies of the MNRJ Orthoptera Collection, as well as discussing concerning post-disaster nomenclatural trends and best practices for types. Equally important, it publishes for the first time the rescued primary biodiversity data alongside unprecedented high-resolution images of these types. This integration establishes a permanent, living dataset that provides a robust taxonomic foundation for Neotropical Romaleidae. Ultimately, this work demonstrates that digitizing specimens and their primary biodiversity data is a critical strategy to preserve information for future research and to safeguard the heritage of Natural History Collections against catastrophic events.
Choeridium tridenticeps Arrow, 1913: a Canthidium Erichson, 1847, not an Ateuchus Weber, 1801 (Coleoptera, Scarabaeidae, Scarabaeinae)
The study of the original description and the holotype – and only known specimen – in the Natural History Museum, London, allows us to transfer the Brazilian Amazon species Choeridium tridenticeps Arrow, 1913, currently treated in Ateuchus Weber, 1801 (= Choeridium Le Peletier de Saint-Fargeau & Audinet-Serville, 1828), to the genus Canthidium Erichson, 1847. Features such as a trituberculate head, protibiae serrated along the outer edge, and a row of deep punctures covering the posterior edge of the pronotum are alien to Ateuchus, but commonly found in Canthidium. At the same time, the specimen matches all known diagnostic features of Canthidium, with the posterior pronotal punctation placing it in the subgenus Neocanthidium Martínez et al., 1964. The new combination Canthidium (Neocanthidium) tridenticeps (Arrow, 1913) is thus established. Canthidium now includes 176 species. The C. tridenticeps holotype was collected during the Amazon leg of the 1911 Stanford Expedition to Brazil, along the Madeira-Mamoré Railroad, then under construction. We provide coordinates for each of the construction camps visited by the collectors W.M. Mann and F. Baker, including Camp 28 (09°38′57″S, 64°58′05″W), in modern Mutum-Paraná (Porto Velho, Rondônia), the type locality of C. tridenticeps. This is a preliminary contribution from our ongoing Ateuchus and Canthidium revisionary projects.
Copyright (c) 2026 Mario Cupello, Cibele Stramare Ribeiro-Costa, François Génier, Fernando Zagury Vaz-de-Mello https://creativecommons.org/licenses/by/4.0
A new species of Conognatha Eschscholtz, 1829 from northwest Colombia (Coleoptera: Buprestidae)
Conognatha (Pithiscus) rhombofasciata sp. nov. (Coleoptera: Buprestidae: Stigmoderini), from northwest Colombia, is described and illustrated. The type specimen of Conognatha (Pithiscus) rochereaui Théry, 1932 was examined and is here recognized as the holotype by monotypy. The known distribution of C. (P.) rochereaui Théry, 1932 is extended to the department of Antioquia, and new collection records are provided for C. (P.) brevicollis (Kirsch, 1866), and C. (P.) lebasii (Mannerheim, 1837). Additionally, a simplified key to the Colombian species of Conognatha is proposed.
Copyright (c) 2026 Cristian Pineda; Carlos Taboada-Verona, Julián David Alzate-Cano, Luis Carlos Pardo-Locarno https://creativecommons.org/licenses/by/4.0
The presence of Diphaglossa gayi Spinola in Argentina (Hymenoptera: Colletidae)
We report the presence of Diphaglossa gayi Spinola, a solitary bee species of the family Colletidae, in Argentina. Until now, this species was considered endemic to Chile, where it is a common element of the Valdivian temperate rainforest fauna. The new records are based on both historical museum specimens and validated photographic observations from the citizen science platform iNaturalist, expanding the known distribution of the species into the Andean forests of Neuquén, Río Negro, and Chubut provinces. Data on distribution and floral associations are presented and discussed.
Copyright (c) 2026 Mariano Lucia, José Montalva, Leopoldo Jesús Alvarez https://creativecommons.org/licenses/by/4.0
Phytoseiidae (Acari: Mesostigmata) on native Cerrado plants in a fragment in Eastern Mato Grosso do Sul, Brazil
Phytoseiidae mites are key natural enemies in agricultural and natural ecosystems. However, their diversity in some areas of the Cerrado biome, particularly in the state of Mato Grosso do Sul (MS), Brazil, remains poorly documented. This study aimed to survey the Phytoseiidae species associated with native plants in a Cerrado fragment in the municipality of Aparecida do Taboado, MS. Sampling was conducted quarterly over one year (2023-2024) on ten selected native plant species. A total of 268 adult mites were collected, belonging to 12 species in two subfamilies (Amblyseiinae and Phytoseiinae). The most abundant species were Euseius citrifolius Denmark & Muma (106 specimens), Phytoseius nahuatlensis De Leon (82), and Iphiseiodes zuluagai Denmark & Muma (36). Xylopia aromatica (Lam.) Mart. (Annonaceae) and Mabea fistulifera Mart. (Euphorbiaceae) were the plant species harboring the highest mite abundance. This study provides the first records of Amblydromalus zannoui Sourassou, Sarmento & Moraes and Phytoseius kaapre Demite, Lofego & Feres for the state of Mato Grosso do Sul. Furthermore, the findings suggest that plant – mite associations are influenced by leaf traits and food resources: P. nahuatlensis was dominant on the trichome-rich leaves of X. aromatica, I. zuluagai utilized leaf domatia on Matayba guianensis Aubl., and the abundant E. citrifolius was linked to M. fistulifera, likely utilizing its pollen. These data help fill a faunistic gap and highlight the role of native Cerrado vegetation as a reservoir of functional biodiversity, maintaining stable populations of natural enemies.
Copyright (c) 2026 Victoria Maria Rosa Cazão, Nayelli Midiã de Almeida Corrêa, Dhiógenes Vinícius Franco Alves Costa, Alici Hikari Machado Shiozuka, Miguel Filipe da Silva Xavier, Lucas Araújo do Nascimento, Antônio Carlos Lofego, Peterson Rodrigo Demite https://creativecommons.org/licenses/by/4.0
Sympycnus monnei: a new remarkable species of long‑legged flies (Diptera: Dolichopodidae) from Brazilian Cerrado
A new species of the challenging genus Sympycnus Loew is described from the Cerrado biome in Brasília municipality, Federal District, Brazil: Sympycnus monnei sp. nov. An illustrated dichotomous key is provided for a subset of Neotropical species characterized by yellow antennae and males with modified tarsomeres of mid leg. Male specimens of the new species were collected and are fully described. High-quality photographs from external morphology and genitalic structures are also provided.
Copyright (c) 2026 Lucas Quevedo, Renato Soares Capellari, Carlos José Einicker Lamas https://creativecommons.org/licenses/by/4.0
Surveys of terrestrial gastropods in three nature reserves in southeast Brazil
Though only a small fraction of its original natural cover remains, the Atlantic Forest is considered a land snail diversity hotspot. While this biome has been widely explored by malacologists in the past, modern surveys of important conservation areas are lacking. Here we report the results of surveys conducted in two nature reserves and one national park in Espírito Santo state: Parque Nacional Caparaó (a fraction of which is located in Minas Gerais state), Reserva Biológica Córrego do Veado, and Reserva Biológica Sooretama. In total, 15 families of terrestrial gastropods were represented, with 35 species identified, plus another five additional morphospecies that could not be fully determined; 16 species-level taxa in Caparaó, 23 in Córrego do Veado, and 22 in Sooretama. The following are new records for Espírito Santo state (or Minas Gerais state in the case of Caparaó): Rectartemon piquetensis, Anthinus multicolor, Burringtonia labrosa, Rhinus velutinohispidus. Only two non-native species were found, Subulina octona in Sooretama and the marsh slug Deroceras laeve in Caparaó. Anecdotal natural history records are also provided, including depigmented individuals of Leiostracus perlucidus. The importance of local faunal surveys, particularly in preservation areas, cannot be overstated as we endeavour to understand our molluscan fauna.
Copyright (c) 2026 Rodrigo Brincalepe Salvador, Rafael Felipe Sousa Antunes, Henrique Campião Herculano, Roulian Inácio Marconcini, Rômulo de Araújo Primo, Rafael Masson Rosa, Fernanda Santos Silva, Barbara Mizumo Tomotani, Franklin Noel dos Santos https://creativecommons.org/licenses/by/4.0
Pagodocerus, a new beetle genus of Mastigocoleidae from mid-Cretaceous Kachin amber (Coleoptera: Dryopoidea)
Mastigocoleidae are an extinct beetle family known from only a few Cretaceous deposits. Here, we describe Pagodocerus volkovitshi gen. et sp. nov., a new mastigocoleid species preserved in mid-Cretaceous Kachin amber. Pagodocerus is primarily distinguished from all other beetles by its asymmetrically perfoliate antennae, with flagellomeres pronouncedly tapering apically. This discovery expands the known diversity of Mastigocoleidae and enhances our understanding of this rare beetle lineage.
Copyright (c) 2026 Yan-Da Li, Di-Ying Huang, Chen-Yang Cai https://creativecommons.org/licenses/by/4.0
Three new species of Acanthocinini (Coleoptera, Cerambycidae, Lamiinae) from Colombia
Three new species of Acanthocinini from Colombia are described: Nealcidion birai sp. nov. from Antioquia, Nealcidion santossilvai sp. nov. from Boyacá and Periestola monnei sp. nov. from Cundinamarca and Boyacá.
Copyright (c) 2026 Ángelo Julián Ávila-Jiménez, Juan Pablo Botero https://creativecommons.org/licenses/by/4.0
Hidden among the spores: adult and larval morphology of Phanerota vecta (Pace, 1990) (Coleoptera: Staphylinidae), a mycophilous beetle newly record from Brazil
The rove beetle subtribe Gyrophaenina comprises obligatory inhabitants of mushroom fruiting bodies, with 1,126 described species. However, their diversity and life histories in Neotropics remain poorly understood. Here, we report the first record of Phanerota vecta (Pace, 1990) from Brazil, significantly expanding its known distribution in South America. A detailed redescription of the adult is provided, elucidating unique diagnostic features of the aedeagus and morphological details in tergite VIII that were not documented in the original description. We also present the first complete larval description for the species, contributing to the limited knowledge of Gyrophaenina immature stages. Furthermore, the association of P. vecta with the poroid fungus Favolus sp. is reported, broadening the known host range for the genus. These findings provide crucial data for taxonomy, ecology and evolutionary understanding of specialized mycophagous Aleocharinae.
Copyright (c) 2026 Ruan Felipe da Silva, Sônia A. Casari, Carlos Moreno https://creativecommons.org/licenses/by/4.0
A new species of Haplocochlias (Gastropoda, Skeneidae) from the Abrolhos Archipelago, Brazil
A new species of Haplocochlias Carpenter, 1864 (Gastropoda: Skeneidae), Haplocochlias pitico sp. nov., is described from the Abrolhos Archipelago, off the coast of Bahia State, Brazil. The species is characterized by its minute, turbiniform shell (1.3-1.4 mm in diameter), markedly rounded whorls, very short spire, smooth protoconch, and body whorl bearing 17 smooth spiral cords separated by interspaces with sinuous prosocline axial striae. The aperture is prosocline and rounded, with a thick, smooth peristome and a narrow but deep umbilicus encircled by two prominent cords. Haplocochlias pitico sp. nov. differs from all its congeners by the distinctive undulations on the upper part of the last whorl, particularly near the aperture. Comparisons with morphologically similar Atlantic species are provided. The present discovery, based on material collected more than four decades ago, demonstrates both the persistence of significant taxonomic gaps in reef-associated gastropod faunas and the enduring scientific value of museum collections for refining biogeographic patterns in the Southwestern Atlantic.
Copyright (c) 2026 Daniel Caracanhas Cavallari https://creativecommons.org/licenses/by/4.0
A new species and new records of Eupogonius LeConte (Cerambycidae: Lamiinae) from Mexico and Guatemala
A new species of Eupogonius LeConte, 1852 (Desmiphorini) is described from Mexico: E. monnei sp. nov., from Nayarit, Jalisco and Michoacán. Three new state records of Eupogonius species are reported from Mexico, and one new country record from Guatemala.
Copyright (c) 2026 Oscar Pérez-Flores https://creativecommons.org/licenses/by/4.0
The correct holotype of Aegla rosanae Campos Jr., 1998 (Crustacea: Anomura: Aeglidae)
Persistent uncertainty about the holotype of A. rosanae threatens both the correct use of the species name and the nomenclatural stability of its junior synonyms. Here, the holotype is definitively identified as the male MZUSP 11162, ensuring proper usage of the name. The holotype is redescribed and illustrated, its COX2 gene sequenced, and the geographic coordinates, altitude, and photographs of the type locality are provided. The female specimen, previously mistaken for the holotype, is reassigned to the new register number MZUSP 47998.
Copyright (c) 2026 Marcos Tavares, Jessica Colavite https://creativecommons.org/licenses/by/4.0
Baseline fish inventory of the Trombetas River rapids, a drainage of Southeastern of the Guiana Shield, Brazil
The Trombetas River basin, a clearwater tributary of the left bank of the Amazon River, originates in the southern portion of the Guiana Shield and flows into the state of Pará, Brazil. Upstream of Cachoeira Porteira, the river flows through a rocky channel with steep gradients and sandy-rocky substrates, forming numerous rapids and waterfalls. Despite the recognized biological importance of Guiana Shield rivers, comprehensive fish surveys remain scarce. Here, we conducted a rapid assessment of the fish community inhabiting rapids, primarily using diving-based collection methods, to document species diversity and community structure in a poorly explored environment. We collected 302 specimens, representing 53 species, 43 genera, 14 families, and seven orders. Siluriformes was the most species-rich order, followed by Characiformes, Cichliformes and Gymnotiformes. At family level, Loricariidae showed the highest species richness, followed by Cichlidae, Anostomidae and Apteronotidae. We also report the first occurrence of Asterophysus batrachus (Siluriformes, Auchenipteridae) in the Trombetas River and range extensions of the strictly rheophilic genera Hypancistrus (Siluriformes, Loricariidae) and Teleocichla (Cichliformes, Cichlidae). The rapids remain preserved mainly due to their location within protected areas, such as the Trombetas State Forest and traditional community territories. However, the proposed Cachoeira Porteira Hydroelectric Dam poses a significant threat to these habitats and their associated fauna, as this stretch of the Trombetas River encompasses one of the last remaining natural rapid systems in the Amazon Basin.
Copyright (c) 2026 Felipe Arian de Andrade Araújo, Manuela Dopazo, Marlon Felipe Chumber Ferreira, Zoneibe Luz, Aline Nascimento da Silva, Maicky Lourant Porto Braga, Jamile Louise de Carvalho Malcher, Any Beatriz da Silva Damasceno, Marina Barreira Mendonça, Heriberto Gimênes Júnior, Wolmar Benjamin Wosiacki, Alberto Akama https://creativecommons.org/licenses/by/4.0
Two new striking species of Brachys from Brazil (Coleoptera: Buprestidae: Agrilinae, Tracheini)
Two new striking species of Brachys (Coleoptera: Buprestidae: Tracheini) are described from Brazil. Brachys corniger sp. nov. described for Mato Grosso represents the second species of the genus known to exhibit vertex apophyses forming horn-like structures. Brachys monnei sp. nov., described from Amazonas, differs from its congeners primarily in body shape and pubescence patterns.
Copyright (c) 2026 Letizia Janaína Migliore https://creativecommons.org/licenses/by/4.0
Dead bodies still tell tales: An alternative noninvasive and nondestructive protocol to extract cuticular hydrocarbons from museum specimens
Natural history museums represent valuable spaces for science outreach and as repositories of biodiversity data. The collections maintained in these institutions are often used as data sources for studies across various disciplines, such as ecology, phylogenetics, and population genetics. Another field that can also benefit from these resources is chemical ecology. Using insects stored in museums offers an alternative avenue for addressing new questions about the dynamics of their cuticular hydrocarbons (CHCs) with respect to different factors such as their interspecific variability, temporal stability and in chemotaxonomy. CHCs play a dual role in insects, serving as mechanical protection against desiccation and pathogens and mediators of communication processes. However, conventional extraction procedures can compromise the specimens given their invasive nature (e.g., hexane immersion approach). Here (1) we propose an alternative, noninvasive and non-destructive method to study CHCs in pinned insects from museum collections and (2) we examine the efficacy of this alternative compared to a more conventional approach for determining CHC profiles. We used two model organisms to address our goals, the Apis mellifera Linnaeus, 1758 and the Tetragonisca angustula (Klug, 1807). We were able to detect CHCs in pinned specimens from both species though there was a qualitative reduction in pinned specimens when compared to fresh ones. The observed variability may reflect confounding differences associated with sampling locality. Our results suggest that this alternative protocol can be applied to assess the CHC composition of museum specimens without causing destruction and represent an effective method to be used in studies integrating taxonomy and chemical ecology.
Copyright (c) 2026 Diego Santana Assis, Sidnei Mateus, Amanda Prato, Rafael Carvalho da Silva, Fabio Santos do Nascimento https://creativecommons.org/licenses/by/4.0
A new Calycomyza Hendel from Brazil (Diptera, Agromyzidae)
Calycomyza Hendel is an important genus of Agromyzidae that includes several agricultural pests. Here, we describe a new species, Calycomyza monnei sp. nov., from Minas Gerais, Brazil, and provide images of the adult and male terminalia.
Copyright (c) 2026 Viviane Rodrigues de Sousa, Marina Morin Gomes, Márcia Souto Couri https://creativecommons.org/licenses/by/4.0
Cassidinae (Coleoptera: Chrysomelidae) from Pernambuco, Brazil: new records, nomenclatural changes, and identification key of tribes
The paper summarizes known information on Cassidinae fauna of Pernambuco. It is based on excerption of literature data, study of museum material, and implements also records from iNaturalist to create as complete picture of the cassidine fauna of Pernambuco as possible at the moment. Yet the region has high potential for future research as the state of Pernambuco hosts a significant portion of the Atlantic Forest’s northeast sector and thus occurrence of further species is to be expected. As a result, a total of 120 species are reported from the state, 67 of them representing the first distributional records. Furthermore, following taxonomic and nomenclatural acts are proposed based on the study of relevant type material: Heptachispa lineaticollis (Pic, 1928) comb. nov. is transferred from the genus Heptispa Weise, 1906 and Uroplata rectangula Uhmann, 1953 stat. nov. is raised to a species rank, previously it was considered a form of Uroplata girardi Pic, 1934. To facilitate future research on Cassidine fauna of Pernambuco a key to Cassidine tribes occurring there is proposed.
Copyright (c) 2026 Adriana Andrade Mota, Lukáš Sekerka, Jakob Jilg, Emna Arous, Renato José Pires Machado, Marianna Vieira dos Passos Simões https://creativecommons.org/licenses/by/4.0
Two new species of Cyclocephala Dejean, 1821 (Melolonthidae: Dynastinae: Cyclocephalini) from the castanea species group
The Cyclocephala castanea species group is formally delimited to include six South American species, including two here newly described: C. monnei sp. nov. from Corumbá municipality, Mato Grosso do Sul state, in the Pantanal domain, and C. figueroai sp. nov. from Iquitos province, Loreto department, Peru, in western Amazon. The other species are C. castanea (Olivier, 1789), C. hardyi Endrödi, 1975, and C. kuijteni Hielkema, 2023, from the Amazon, and C. pygidialis Joly, 2000, from Sabana province. The diagnosis for the species group is provided, along with a taxonomic key for adult males and an updated.
Copyright (c) 2026 Fernando Paz-Ordoñez, Rubem Cláudio Simões-Vieira, Paschoal Coelho Grossi https://creativecommons.org/licenses/by/4.0
A new Arnaudius Grossi & Bartolozzi, 2011 (Coleoptera: Lucanidae) species from Machu Picchu, in the Peruvian Andes
Arnaudius Grossi & Bartolozzi, 2011 is a stag beetle genus endemic to Peru, currently comprising three described species. In this study, we describe a fourth species for the genus, Arnaudius monnei Soares & Grossi sp. nov., based on two specimens collected in Machu Picchu, Peru. This new species shares all the diagnostic features of the genus, particularly those related to the male genitalia, the most unambiguous. The description of this new species calls attention to the unknown diversity of Lucanidae in the Tropical Andes, a region with high endemism, but which still remains largely undersampled. The new species is described, illustrated, and compared with the other species of the genus. Additionally, we provide an updated identification key for the males of the species of Arnaudius and a known distribution map.
Copyright (c) 2026 Antonio Wesley Araujo Soares, Paschoal Coelho Grossi https://creativecommons.org/licenses/by/4.0
A new species and notes on Cendiuna Galileo & Martins (Cerambycidae, Lamiinae, Hemilophini)
Cendiuna Galileo & Martins, 1991 is a genus of the tribe Hemilophini known from the Brazilian Atlantic Forest, and currently comprising five species. The genus is mainly diagnosed by having the pronotum depressed at the mid-posterior region, and elytra slightly widened toward apical region, with light dense pubescence laterally. Besides that, its species present patterns of firefly-like coloration. Herein, we describe Cendiuna migueli sp. nov. from the state of Paraná (Brazil). Additionally, we provide a new record of Cendiuna puranga Galileo & Martins, 1991 from Paraná and point out new variations in the species.
Copyright (c) 2026 José Osvaldo Silva Júnior, Diego de Santana Souza, Renato José Pires Machado https://creativecommons.org/licenses/by/4.0
Marilia Müller, 1880 (Trichoptera: Odontoceridae) from Atlantic Forest: two new species from Rio de Janeiro, southeastern Brazil, and a new distributional record
The genus Marilia, with 83 extant species distributed across the Oriental, Australasian, and Neotropical regions, is the most diverse within the caddisfly family Odontoceridae. In Brazil, 28 species are currently known, 15 of which occur in the Atlantic Forest – one of the world’s 36 major biodiversity hotspots. In this study, we describe and illustrate two new species of Marilia from Atlantic Forest in the state of Rio de Janeiro, southeastern Brazil: Marilia monnei sp. nov. and Marilia catiae sp. nov. Additionally, we expand the known geographical distribution of Marilia maxakali Bonfá-Neto, Salles & Vilarino, 2023 to include the states of Rio de Janeiro and Santa Catarina. This study significantly contributes to bridging the knowledge gaps on caddisflies in the Atlantic Forest, resulting from both Wallacean and Linnean shortfalls.
Copyright (c) 2026 Ana Lucia Henriques-Oliveira, Gabriel Santos Coelho David, Jorge Luiz Nessimian, Leandro Lourenço Dumas https://creativecommons.org/licenses/by/4.0
New genus, new combination and new tribal placement for the enigmatic species Stenocrates nasutus Dechambre, 1979 (Coleoptera, Scarabaeidae, Dynastinae)
Monneocrates gen. nov. is proposed herein to accommodate the enigmatic species Stenocrates nasutus Dechambre, 1979 (Coleoptera: Scarabaeidae: Dynastinae), resulting in a new combination. Additionally, Monneocrates parabolicus sp. nov. is also described. The new genus is placed within the tribe Phileurini based on the characters of the mentum: laterally expanded and nearly entirely covering the first labial palpomere in ventral view. Illustrations, diagnoses, and a geographical distribution map are provided for Monneocrates species, including a first record of S. nasutus from Brazil. Finally, a discussion on the diagnostic characters used to define the new genus and the differences of its species from Stenocrates Burmeister, 1847, as well as the justification for placing the new genus within Phileurini, are presented.
Copyright (c) 2026 Paulo Roberto Marinho Duarte, Paschoal Coelho Grossi, Fernando Zagury Vaz-de-Mello https://creativecommons.org/licenses/by/4.0
A new species of Nyctocrepis Motschulsky, 1853 fireflies from one of the world’s largest urban parks, in the Atlantic Rainforest of Rio de Janeiro, Brazil (Coleoptera: Lampyridae: Cladodinae)
Nyctocrepis is a lineage of moderate-sized (1-2 cm) fireflies endemic to the Atlantic Rainforest, in Brazil. All three Nyctocrepis species are brightly-colored, presumably diurnal, and feature narrow distribution ranges. Herein we describe and illustrate Nyctocrepis monnei sp. nov., recorded from an urban natural park, the Floresta da Tijuca, in Rio de Janeiro State, Brazil. This new species is unique among its congenerics by the following combination of features: smaller length (~0.8-1.1 cm); frontoclypeo-labral suture membranous; elytron subparallel-sided, pronotum and pronotal disc totally black – except for pair of anterolateral vitreous spots –, and elytron with basal half orangish-yellow and apical half dark-brown; antennal lamellae about 2-3.3× longer than core antennomere; phallus with dorsal plate ridges feebly developed, paramere inner margin slightly concave at apical half, basally smooth, and with an apical concavity at the outer margin. Our study highlights the underestimation of firefly diversity even within large metropolises, and the value of urban parks in protecting endemic species and biodiversity at large in the Atlantic Rainforest.
Copyright (c) 2026 Matheus de Souza Leite Alexandre, Daniela Maeda Takiya, Luiz Felipe Lima da Silveira https://creativecommons.org/licenses/by/4.0
New species and records of the South American genera Raysymmela Saylor, 1947 and Symmela Erichson, 1835 (Coleoptera: Scarabaeidae: Sericinae)
Here we describe two new species of Raysymmela Saylor, 1947 from Peru, R. hajeki Pacheco & Ahrens, sp. nov. and R. tarapoto Pacheco & Ahrens, sp. nov., as well as three new species of Symmela Erichson, 1835 from Brazil, S. drumonti Pacheco & Ahrens, sp. nov., S. monnei Pacheco & Ahrens, sp. nov., and S. seideli Pacheco & Ahrens, sp. nov. We updated identification keys to species for both genera, and for the new species, we provided distributions maps and illustrated the external morphological features, as well as the aedeagus. Furthermore, we analyzed additional material for the known species from both genera, thus generating new distribution records.
Copyright (c) 2026 Thaynara Lara Pacheco, Dirk Ahrens https://creativecommons.org/licenses/by/4.0
Filling knowledge gaps: Cerambycidae (Coleoptera) from southwestern Paraná, with new geographical records for Paraná and Brazil
We provide a checklist of Cerambycidae species deposited in the Coleção Entomológica UFFS-RE, sampled with Malaise traps in forest remnants of southwestern region of the Brazilian state of Paraná. The subfamilies Cerambycinae, Lamiinae, Lepturinae, and Prioninae were recorded totaling 168 morphotypes, with 128 species identified. This study provides 14 new records of Cerambycidae species for the state of Paraná and one new record for Brazil (Callia paraguaya Galileo & Martins, 2002). This checklist is the first focused on cerambycids from the southwestern Paraná, contributing to fill in the knowledge of species distribution in the state and in Brazil, helping to reduce the Wallacean shortfall in cerambycid biodiversity.
Copyright (c) 2026 Junior Juliani, Juan Pablo Botero, Marcela Laura Monné, Adelita Maria Linzmeier https://creativecommons.org/licenses/by/4.0
A new species of Hypotelus Erichson from the Atlantic Forest of Brazil (Coleoptera, Staphylinidae, Piestinae)
Hypotelus monnei Paiva & Caron sp. nov., is a new species of minute rove beetles (Coleoptera: Staphylinidae, Piestinae) described from Brazil. We have also added the new species to the dichotomous key of Hypotelus Erichson, 1839 and verified the monophyly of the genus, now including the new species. Hypotelus monnei sp. nov. is similar to H. corniculatus Bortoluzzi & Caron, 2017, but differs by having the head distinctly darker than the pronotum, frontal processes one-fourth to one-third the length of the antennal scape, antenna shorter than that of H. corniculatus with antennomere IV subquadrate, and sternite VIII with sinuous posterior margin. The new species shares morphological characters with four species that comprise a clade previously referred to as Clade C. Until now, the species of this clade were distributed from Costa Rica to Brazil and concentrated in tropical rainforests. The new species represents the southernmost and easternmost distribution of Clade C, and is the first species of this clade to occur in Brazil. With this addition, Brazil now records three species of Hypotelus.
Copyright (c) 2026 Cássia Lino Paiva, Edilson Caron https://creativecommons.org/licenses/by/4.0