Two new species of Glyphonyx Candeze, 1863 from Kyrdemkulai and Umiam, Meghalaya, India, Glyphonyx kyrdemkulaiensis Mandal and Chandran, new species and Glyphonyx ribhoiensis Mandal and Chandran, new species, are described. These new species can be distinguished from congeners by differences in the scutellar shield, pronotal pubescence, elytral length, structure of the bursa copulatrix sclerite, and by the sclerotized portion ofthe spermatheca. Additionally, a diagnostic key and checklist of all known species from India are provided.
Temnoscheila curupira Kippenhan, new species is described and illustrated from specimens collected in the Brazilian states of Mato Grosso, Par & aacute;, and S & atilde;o Paulo. While morphologically distinct within the genus, it is compared to species that share similarities.
We report 10 new country records of beetle species for Colombia: one belonging to the subfamily Anaidinae (Hybosoridae) and nine to the subfamily Scarabaeinae (Scarabaeidae). The new records come from the departments of Antioquia, Caqueta, Cauca, Cundinamarca, Meta, and Narino. For each species, we provide photographic documentation and summarize its current distribution range. Additionally, we present an updated checklist of the endemic species of these two subfamilies for Ecuador, contributing to a broader understanding of the regional diversity and biogeography of these groups.
This paper describes Lamellipalpus umiamensis Chandran, new species from Meghalaya in northeastern India. The species is easily distinguishable from other members of the genus Lamellipalpus Maulik, 1921 by each elytron having two black, slightly oblique, longitudinal stripes (a long lateral stripe and a short additional one along the anterior half of the suture). An updated checklist of Indian Lamellipalpus is provided. Discovery of this new species highlights the rich diversity of Lamellipalpus in northeastern India.
A new species of Cubanotyphlus Coiffait and Decu, 1972 (Coleoptera: Staphylinidae: Leptotyphlinae: Neotyphlini) is described from the southernmost reaches of the contiguous USA, in Brownsville, Texas. Cubanotyphlus inviclaustrum Eldredge and Gorring, new species is the second species of the genus known from North America. The new species is currently known from a single female and is easily distinguishable by the unique form of female genital sclerites and its intermediate size (1.3 mm) compared to previously described species. The new species was collected in Tamaulipan thornforest in the Lower Rio Grande Valley, in a section of valuable remnant habitat, including the last natural Mexican palmetto tract in the USA. These preserved areas are being threatened by political border infrastructure, and the vulnerability of the soil-dwelling fauna in this region is highlighted for the first time.
At the time it was recognized in 1997 as an endangered species, basic information about the Mount Hermon June beetle (MHJB), Polyphylla barbata Cazier, 1938 (Coleoptera: Scarabaeidae), essential for conservation ofthis beetle was lacking, including its geographic distribution, habitat associations, and population biology. During a 35-year period from 1990-2024, presence-absence surveys were conducted at over 400 properties to determine the MHJB's geographic distribution in the Zayante sandhills region of Santa Cruz County, CA, USA. Because MHJBs are nocturnal, blacklight traps were used to live-trap males but not the flightless females. Capture-recapture studies were performed at three study sites to estimate daily population numbers, survival rates, lifespans, and distances dispersed. These parameters were estimated for only the adult males as females spend the bulk of their adult lives burrowing in the sand. In addition, procedures are described for determining the effective area of detection of the blacklight traps, which can then be used to estimate adult generation sizes for annual population monitoring. Estimated annual generation sizes for a 10-year monitoring period are reported for amitigation site.
Java, Indonesia is one of the most biodiverse regions of the world. However, knowledge of its biodiversity is threatened by both continued habitat conversion and the lack of domestic research capacity. The aim of this multinational project was to document the species of bark and ambrosia beetles (Curculionidae: Platypodinae and Scolytinae) within the protected forested areas of Universitas Brawijaya, East Java. One new platypodine and three new scolytine species are described: Crossotarsus gunungapi Hulcr, Tarno, and Levia, new species, Cosmoderes arjuno Johnson, new species, Cosmoderes opacus Johnson, new species, and Amasa brawijaya Smith, new species. Six Platypodinae and 28 Scolytinae species are documented. The goal of this checklist is not to be exhaustive, but rather to provide a baseline in the recently re-established multinational collaboration between forest entomologists in Indonesia and the USA. The broader aim of the project is equitable benefit-sharing; therefore, this paper not only delivers new data about biodiversity in Indonesia but also provides training of the new generation of local forest entomologists.
A new species of Sternacutus Gilmour, 1961 (Lamiinae: Acanthocinini), Sternacutus crucolon Lanuza-Garay, TaboadaVerona, and Rivera, new species, is described from Panama. Five new country records are provided for various Cerambycidae mental or provincial records from Panama and Colombia are provided: Ambonus electus (Gahan, 1904) (Colombia); Alastos phasma, Caciomorpha palliata, and Holonotus nigroaeneus Bates, 1869 are provided.
Insects exhibit metabolic strategies for energy storage that influence their responses to environmental changes. Although the physiological effects of disturbances on Scarabaeinae have been studied, sex is often treated as a secondary factor. We used the dung beetle Dichotomius (Dichotomius) bos (Blanchard, 1845) to assess whether sex significantly affects individual traits and physiological condition. Specimens of both sexes were collected from a low-impact pastureland fragment during the rainy season using baited pitfall traps with cattle dung. Individuals were sexed based on cephalic horn morphology and abdominal characters, and dry biomass, fat content, and body size were measured. Fat reserves increased proportionally with dry biomass in both sexes, but females showed a steeper increase per unit of biomass. No significant relationship was detected between body size and fat content. These findings indicate that sexual dimorphism should be considered a central factor in understanding ecological dynamics, and that differences in energy storage strategies between males and females may shape their responses to environmental stress in altered landscapes.
Dichotomius nisus (Olivier, 1789) is a large tunneler dung beetle with potential relevance for ecological restoration and livestock management in Brazilian pastures through its capacity to reduce cattle dung accumulation. This study examined its reproductive biology in the laboratory under ambient temperature and light conditions to assess the feasibility of ex situ breeding for future population reinforcement programs. The study commenced in October 2023 and concluded in January 2025 and was conducted using four males and five females collected from pastures in southern Brazil. Ex situ reproduction was simple and consistent, with the production of five brood balls, which had an average diameter of 37.9 f 3.59 mm and an average weight of 25.9 f 3.28 g. The duration of the different developmental stages was four days from egg to larva, 56 days from larva to pupa, and 21 days from pupa to adult. Thus, the total developmental time from egg to adult was 82 f 0.6 days, with reproductive activity occurring from spring to summer (November to March). Maximum adult longevity reached 207 days in the parental generation and 284 days in the F1 individuals. These findings highlight the reproductive capacity of D. nisus, underscoring its suitability for population reinforcement in livestock landscapes in Brazil. Such an approach offers a sustainable strategy for manure recycling, improving soil function, and increasing environmental quality without relying on chemical inputs.
The bark-gnawing beetles (Trogossitidae), in the old sense, have recently been split into several families, three of which (Lophocateridae, Thymalidae, and Trogossitidae) are known to inhabit South Carolina. Lophocateridae are omnivores and include the stored product pest Lophocateres pusillus (Klug); three species are found in South Carolina, including Grynocharis quadrilineata (Melsheimer, 1844), new state record. Thymalidae are associated with polypore fungi, and one species, Thymalus marginicollis Chevrolat, 1842, is reported from South Carolina. Trogossitidae, in the strict sense, are mostly predators of insects associated with dead wood, especially economically important bark beetles (Curculionidae: Scolytinae), and include the cadelle [Tenebroides mauritanicus (Linnaeus)], a serious stored product pest. Eighteen species are reported for South Carolina, including Euschaefferia hicoriae (Schaeffer, 1918), new state record, Temnoscheila acuta LeConte, 1858, new state record, Tenebroides bimaculatus Melsheimer, 1844, new state record, Tenebroides nanus (Melsheimer, 1844), new state record, and Tenebroides rugosipennis (Horn, 1862), new state record. An illustrated key to Lophocateridae, Peltidae, Thymalidae, and Trogossitidae of eastern North America is provided.
Pedro Reyes-Castillo was one of the most influential experts on Passalidae during the last six decades, leaving a vast body of work on the family. Here, we present a list of the species described by Pedro Reyes-Castillo and provide information on page and figure numbers where the original description appears, repositories of type specimens, and type localities. Additionally, we designate the lectotype for Petrejoides chocoensis Reyes-Castillo and Pardo-Locamo, 1996. Furthermore, we address the lack of a repository institution designation for the holotype of Passalus (Pertinax) gonzalezae Jimenez-Ferbans, Reyes-Castillo, and Schuster, 2019, which invalidated the species description; we also include the original description of Passalus (Passalus) orientalis Reyes-Castillo, new species, which Pedro Reyes-Castillo had described as part of his (unpublished) doctoral dissertation.
Gynandromorphism is a rare phenomenon in which a chimeric individual simultaneously has genetically male and female tissues, typically exhibiting both male and female phenotypes at the same time. Here, we report and describe for the first time two cases of gynandromorphism in the cantharid beetles Discodon crassipes Wittmer, from Brazil, and Discodon metallicum (Bourgeois), from Ecuador. The female of D. crassipes and the male of D. metallicum are described for the first time, enabling the correct interpretation of male and female traits in gynandromorphic specimens. We compare the areas where male and female features are expressed in each gynandromorphic specimen and the differences ofthese features from fully male and female specimens. In addition, a lectotype is designated forD. metallicum.
A new genus and species, Sheoldytes ozarkensis Miller and Sites, new genus, new species, is described for an evidently subterranean specimen of diving beetle (Coleoptera: Dytiscidae) collected from the Jacks Fork River, Ozark Mountains, Missouri, USA. The genus and species are similar to other North American subterranean diving beetles in being blind, lightly pigmented, and flightless, and having a shortened prosternum and the pronotum cordate. The genus and species differ from others in: 1) the large size of the head, 2) the large pronotum, 3) the anterolateral angles of the pronotum extended anteriorly in slender processes along the sides of the head, 4) the broadly and deeply excavated prosternum medially, and 5) the broad prosternal process. The genus belongs to the subfamily Hydroporinae and tribe Hydroporini but is incertae sedis with respect to subtribe. Only a single female specimen is known. The specimen was collected in association with a karstic aquifer previously unknown to harbor subterranean diving beetles, the Ozark Plateaus Aquifer System.
