Beetles - Science topic

The toxicity of two microbial insecticides, abamectin (AB) and emamectin benzoate (EM) at 0.25 and 0.5 mg/kg, and three monoterpenes, carvone (CA), p-cymene (CY), and menthone (ME) at 0.625, 1.25, and 2.5 g/kg and their combined treatments was assessed against Callosobruchus maculatus (F.) on cowpea seeds. Adult mortality (after 3 and 7 days), prog...

Two Henosepilachna beetles are notorious defoliators mainly attacking potatoes. In China, H. vigintioctopunctata is predominantly distributed in the southern region of the Yangtze River, while H. vigintioctomaculata is found in northern area. In the current paper, we uncovered H. vigintioctopunctata displayed a higher thermotolerance than H. vigint...

We present a genome assembly from an individual male specimen of Chrysolina americana (Rosemary Beetle; Arthropoda; Insecta; Coleoptera; Chrysomelidae). The genome sequence has a total length of 980.60 megabases. Most of the assembly (99.51%) is scaffolded into 12 chromosomal pseudomolecules, including the X sex chromosome. The mitochondrial genome...

We present a genome assembly from an individual male specimen of Crioceris asparagi (Asparagus Beetle; Arthropoda; Insecta; Coleoptera; Chrysomelidae). The genome sequence has a total length of 639.30 megabases. Most of the assembly (93.04%) is scaffolded into 9 chromosomal pseudomolecules, including the X and Y sex chromosomes. The mitochondrial g...

We present a genome assembly from an individual male specimen of Rhagonycha lutea (soldier beetle; Arthropoda; Insecta; Coleoptera; Cantharidae). The genome sequence has a total length of 479.80 megabases. Most of the assembly (90.1%) is scaffolded into 7 chromosomal pseudomolecules, including the X sex chromosome. The mitochondrial genome has also...

We present a genome assembly from an individual female specimen of Brachypterus glaber (beetle; Arthropoda; Insecta; Coleoptera; Kateretidae). The genome sequence has a total length of 648.30 megabases. Most of the assembly (95.55%) is scaffolded into 11 chromosomal pseudomolecules, including the X sex chromosome. The mitochondrial genome has also...

We present a genome assembly from an individual male specimen of Myrrha octodecimguttata (18-spot Ladybird; Arthropoda; Insecta; Coleoptera; Coccinellidae). The genome sequence has a total length of 769.90 megabases. Most of the assembly (84.54%) is scaffolded into 10 chromosomal pseudomolecules, including the X sex chromosome. The mitochondrial ge...

Enochrus umbratus (Sharp, 1884) stat. rev. has been restored in the species status and the lectotype and paralectotypes of Philydrus umbratus Sharp, 1884 has been designated. Enochrus umbratus is still known only from type specimens, all other published records of this species are belongs to Enochrus simulans (Sharp, 1873). Due to the absence of a...

The paper presents data on the occurrence of 15 beetle species new to the Polish part of the Białowieża Forest. The beetles were caught during the inventory of the Białowieża Forest carried out from May to September 2023. The beetles were caught using purple multiple-funnel (Lindgren) traps, which were set up in selected locations within the study...

During the period 2021-2022, a study was carried out with the aim of determining the population dynamics spread of the bioagents Coccinella septempunctata L. and Harmonia axyridis Pallas from family Coccinellidae in the agrocenosis of oriental tobacco ecotype Dupnitsa (variety Dupnitsa 733). Predatory ladybirds were identified in different numbers...

Software‐Defined Wireless Sensor Networking (SDWSN) is termed a rising network structure that has become more important to the Internet of Things (IoT). In this network structure, the control planes effectively manage the sensor plane. Due to these kinds of separation, the management of networks became easier and also their efficacies are enhanced...

We study image segmentation in the biological domain, particularly trait and part segmentation from specimen images (e.g., butterfly wing stripes or beetle body parts). This is a crucial, fine-grained task that aids in understanding the biology of organisms. The conventional approach involves hand-labeling masks, often for hundreds of images per sp...

The biological characteristics of Ips hauseri in the coniferous mountain forests of Kazakhstan were studied during the period of depression of the bark beetle population in the windfall zone of 2011 in the high-mountain Medeu tract. It gives information on the spread of I. hauseri in the world. According to our observations, during the stages of de...

Copris are part of the Scarabaeidae family of Coleoptera. Copris are dung beetles or coprophagous beetles. These insects are called tunnelers because they excavate channels in the substrate. They use dead organisms and non-living organic compounds as a nutrient source. By breaking down dead matter, they provide nutrients that are important to the e...

Resource availability should have consequences for life‐history functions and trade‐offs among them because it influences the amounts of resources allocated to different functions. Nutritional status during a key developmental window (sexual maturation) may also have an important impact on life‐history functions and such trade‐offs. However, less i...

The lesser grain borer, Rhyzopertha dominica (F.) (Coleoptera: Bostrichidae) and khapra beetle, Trogoderma granarium E. (Coleoptera: Dermestidae) are primary stored-grain insect pests. Differences in certain biological and physical parameters of both pest species and wheat genotypes were investigated under laboratory conditions. Zinc (Zn)-biofortif...

This book represents the first monograph dedicated to water beetles (Adephaga and Hydrophiloidea) of Taiwan. It features 113 common or noteworthy species, accompanied by high-quality photographs and illustrations of male genitalia. The book also reports ten new records for Taiwan: Canthydrus flammulatus Sharp, 1882, Haliplus angustifrons Regimbart,...

A new synonymy in the genus Scolytus Geoffroy, 1762 is established: S. jacobsoni (Spessivtsev, 1919) (= nunbergi Michalski, 1964 syn.n.). We restore species status of Scolytus emarginatus (Wichmann, 1915), stat.resurr. (= seulensis Murayama, 1930 syn.n) and Ernoporus eggersi Kurentsov, 1941 stat.resurr. previously treated as synonyms of Scolytus sc...

Thermal polymorphism, usually represented by thermal melanism (darker coloration in cooler habitats), is a well-known phenomenon in animals. In Cetoniinae, several species in captivity tend to become darker after several generations of breeding, which is probably caused by a lower temperature than is typical for their native habitats. Pachnoda isku...

The status of Nematodes pavidus Horn (Coleoptera: Eucnemidae), in relation with Nematodes punctatus LeConte and Nematodes teres Horn is being questioned after Muona (2000) revised the family in the Nearctic region. Investigations into the status of N. pavidus included explorations of the histories among these three species and examining images of t...

BACKGROUND The lesser grain borer, Rhyzopertha dominica, is a serious stored‐products pest mainly controlled by insecticides. Spinosad, an environmentally friendly biological insecticide with low mammalian toxicity, is considered a suitable candidate for R. dominica management. Given the structural similarity of spinosad and maltose, both containin...

The extensive use of antimicrobials in broiler production is changing the bird microbiota, fostering drug-resistant bacteria, and complicating therapeutic interventions, making the problem of multidrug resistance global. The monitoring of antimicrobial virulence and resistance genes are tools that have come to assist the breeding of these animals,...

ABSTRUCT The mandibles of coleopteran insects are typical examples of external morphological asymmetry in animals. The developmental molecular mechanisms underlying the external morphological asymmetry remain to be elucidated compared to those of the internal asymmetric organ. In the tenebrionid beetle, Zophobas atratus , the inner teeth of adult m...

The stag beetle genus Odontolabis Hope, 1842 (Lucanidae: Odontolabini) contains approximately 60 species, predominantly restricted to the Oriental Region, with 6 named species from Vietnam. Here, we describe a new subspecies of Odontolabis pareoxa Bomans, Lacroix & Ratti, 1973 from Yên Bái Province in northern Vietnam: Odontolabis pareoxa vietnamen...

Subcortical beetle communities interact with a wide range of semiochemicals released from different sources, including trees, fungi, and bark beetle pheromones. While the attraction of bark beetles, their insect predators, and competitors to bark beetle pheromones is commonly studied, the attraction of these beetle communities to other sources of s...

Windthrow disturbance is an important driver of arthropod diversity in forests. In the past, studies have mainly focused on the first years after disturbance, and there are hardly any data on arthropod trajectories in windthrows and on salvage logging effects over decades. We sampled arthropods of different functional groups on 16 permanent plots f...

Toxicity of essential oil vapours obtained from Pistacia spp. to the granary weevil, Sitophilus granarius (L.) (Coleoptera: Cur-culionidae) Toxizität der Dämpfe ätherischer Öle von Pistacia spp. gegen den Kornkäfer, Sito-philus granarius (L.) (Coleoptera: Curculionidae)

Saw-toothed grain beetle ( Oryzaephilus surinamensis ) negatively impacts food products, which are considered as common insect pests in several countries. This study reports 159 Mb high quality long reads de novo genome assembly of O. surinamensis using PacBio-Sequel sequencing technology. The genome was assembled into 3043 contigs with the largest...

Over the years, the study of adult sex ratio is a topic that has gained attention for its impact on reproductive outcomes and aging across various insect species. However, there is still limited research focused on insects reared for food and feed production. To address this gap, this study aimed to evaluate the impact of different adult sex ratios...

Global forestry faces significant challenges, including the degradation of forest resources and the growing threat of invasive species, which disrupt ecosystems and affect human health. Effective management of invasive species is essential for maintaining biodiversity, forest resilience, and global ecological stability. This study examines the appl...

Arthropods play key roles in ecosystems as pollinators or as food resources for many birds. The decline in arthropods in farmland due to agricultural intensification is related to negative population trends in farmland birds. Semi‐natural areas such as fallow land are valuable habitats for arthropod communities in farmland, but the potential of the...

Climate change-associated disturbances such as storms, wildfires, and pest outbreaks increasingly destabilize forest systems, threatening their ecological, economic, and social functions. These disruptions impact the forest value chain (FVC) by causing fluctuations in timber supply, from a quantity and quality perspective. This study employed the o...

The click beetles (Elateridae) represent the major and well-known group of the polyphagan superfamily Elateroidea. Despite a relatively rich fossil record of Mesozoic Elateridae, only a few species are described from the Upper Cretaceous Burmese amber. Although Elateridae spend most of their lives as larvae, our knowledge on immature stages of this...

A new species of the genus Trichodromeus Luze, 1903 from Afghanistan is described and illustrated: T. ottoi sp. n. A new combination is proposed: T. salangensis (Tronquet, 1981) comb. n. (from Geodromicus).

A new lucanid species within the Neolucanus laticollis group, Neolucanus kontumensis sp. nov., is described and illustrated from Kon Tum Province, Central Vietnam. This new species can be differentiated from the other species in the group in having a compact head and pronotum, only apically dentate protibiae, and a peculiar color pattern on the ely...

The riffle beetle genus Sinonychus Jäch & Boukal, 1995 (Elminae, Macronychini) includes only three species from East Asia. In this paper, two new species, S. lipinaesp. nov. and S. luodianensissp. nov., are described from Guizhou Province, China. Illustrations of the new species and a key to all five Sinonychus species are also provided.

A key issue in landscape management, whether public or private, is the mitigation of disturbance events that impact vegetation, ecosystem health, and thus ecosystem services (ESs). Although many studies have found significant tree mortality due to insect infestations, there is still insufficient understanding of how these infestations alter ESs and...

Background The recent FDA-approved Ycanth (cantharidin) for treating Molluscum contagiosum , a viral skin infection, was first reported from blister beetles. Medicinal insects are reservoirs for exploring bioactive molecules, which have various benefits. Their use in traditional medicinal practices explains why uncovering new chemical substances is...

Drought and heat events in Europe are becoming increasingly frequent due to human-induced climate change, impacting both human well-being and ecosystem functioning. The intensity and effects of these events vary across the continent, making it crucial for decision-makers to understand spatial variability in drought impacts. Data on drought-related...

A comprehensive revision is presented of the Oriental and Australasian diving beetle genus Sandracottus Sharp, 1882 (Coleoptera: Dytiscidae: Dytiscinae: Aciliini) and seven junior subjective synonyms are proposed. Sandracottus guerini Balfour-Browne, 1939, syn. nov. is a junior subjective synonym of S. femoralis Heller, 1934; S. manipurensis Vazira...

The description and test results of a quite simple and yet universal integrated method for quantifying the state of ecosystems and the degree of negative impact on them by industrial facilities based on biodiversity parameters are presented. The approach is based on the normalisation of diversity parameters of indicator groups of animals and plants...

A new genus for the tribe Pseudotarsonemoidini of the family Tarsonemidae is established in order to accommodate undescribed mites associated with bark beetles in Mexico. The new, monotypic genus Ochyronemus, with the type species O. jaliscoe being diagnostically and phylogenetically closest to the derived Pseudotarsonemoides-Tarsobisulcus cluster...

The Dung Beetle Optimization Algorithm (DBO) is characterized by its great convergence accuracy and quick convergence speed. However, like other swarm intelligent optimization algorithms, it also has the disadvantages of having an unbalanced ability to explore the world and to use local resources, as well as being prone to settling into local optim...

This study investigates the attachment ability of harlequin ladybird, Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae), focusing on the synergic action of opposite legs, the anisotropy of adhesive organs and sexual dimorphism. Contrary to expectations, experiments showed that beetles with fewer legs sometimes exhibited higher attachment force...

Social insects often share their colony with individuals of different relatedness levels and life stages. When no reproductive depression is in place, a female must choose whether to stay with her natal group and possibly limit her reproductive potential or leave to establish a new colony. The factors governing and following this decision are still...

Seven new species of the genus Anacaena Thomson, 1859 are described from region of Alto Apure, Venezuela: A. crenituloides sp. n., A. hospesa sp. n., A. llanera, sp. n., A. mantecala sp. n., A. pallida sp. n., A. paulincarmenae sp. n. and A. samana sp. n., closely related morphologically, representing a new group of species within the Neotropica...

Aim Globally, arthropod biodiversity is under threat, with increased risk of species‐level extinctions, and this threat is particularly acute on oceanic islands. A fundamental first step towards understanding extinction risk is to understand genetic connectivity among the constituent populations of a species. Our aim is to develop and implement a p...

The use of fungicides in agriculture can reduce animal biodiversity. Such non‐target effects could be mitigated through fungus‐resistant cultivars that reduce the need for fungicide applications. Hence, we conducted a study in 32 commercial vineyards in southwest Germany. We investigated the effect of fungicide spraying intensities (susceptible vs...

Cet ouvrage, fruit de 13 années de travail et coordonné par Henri-Pierre Aberlenc, est l'œuvre de 50 scientifiques de renommée mondiale. Ce manuel est à la fois une synthèse des connaissances, un guide pratique et un outil pédagogique, que les auteurs ont souhaité compréhensible et accessible au plus large public possible : bien entendu à tous nos...

The granulate ambrosia beetle, Xylosandrus crassiusculus (Motschulsky), and the black stem borer, Xylosandrus germanus (Blandford), are important pests in ornamental nurseries. The effects of monitoring trap color in capturing adult X. crassiusculus and X. germanus are mixed in the literature. Because the colorless bottle trap is commonly used to m...

Diabetes management requires evidence-based recommendations that enable people to manage their health. A rising diabetes rate can lead to significant health risks and financial hardships. An early diagnosis and efficient treatment are essential to reduce the effects of diabetes. With dietary recommendations and other essential components of diabete...

Species richness and relative abundance of ladybird beetles (Coleoptera: Coccinellidae) were surveyed in Suwałki Landscape Park (NE Poland) in 2020 and 2021. Altogether, 40 species were recorded, including some relatively rare in Poland, such as Calvia quindecimguttata (FABRICIUS), Ceratomegilla notata (LAICHARTING), Coccinella hieroglyphica L., Ne...

Globally, forest decline and tree mortality are rising due to climate change. As one of the important afforestation trees in northeast China, Pinus sylvestris var. mongolica is suffering from forest decline and the accompanying pests. Certain fungi from the ophiostomatalean contribute to forest pest outbreaks and can be pathogenic to pine trees. Ho...

Zusammenfassung Limnephilus elegans wurde im Frühjahr 2024 im Jahnsgrüner Hochmoor im Westerzgebirge mittels Lichtfangs wiedergefunden. Der aktuelle Fund ist der einzig aktuelle von drei isolierten Fundorten in Sachsen. Die Fundumstände lassen auf eine Entwicklung im Gebiet schließen. Insgesamt wurden 20 Arten nachgewiesen. Der hohe Anteil moorasso...

Monolepta hieroglyphica, in view of its wide-ranging host and highly polyphagous characteristics, has become an important agricultural pest in East and Southeast Asian countries. To better understand its biology and develop control strategies, we present a high-quality chromosome-level genome assembly of M. hieroglyphica, with contig N50 of 18.62 M...

حشرات المخازن خنفساء اللوبيا الجنوبية

All specimens labelled Anthrenus pimpinellae were borrowed from the Natural History Museum, London. Many of the specimens were incorrectly identified with only a minority A. pimpinellae. Included in the sample were three specimens collected from Algeria. The specimens are compared with potential confusion species; the Algerian specimens differed fr...

In order to solve the problem of poor adaptability and robustness of the rule-based energy management strategy (EMS) in hybrid commercial vehicles, leading to suboptimal vehicle economy, this paper proposes an improved dung beetle algorithm (DBO) optimized multi-fuzzy control EMS. First, the rule-based EMS is established by dividing the efficient w...

The field study assessed the occurrence of natural enemies in the western undulating zone of Odisha, conducted at the Regional Research and Technology Transfer Station in Bhawanipatna, during the Kharif seasons of 2016 and 2017. The study examined the population dynamics of key natural enemies in Bt and non-Bt cotton, including six species of ladyb...

Laboratory bioassays were conducted to assess the efficacy of each entomopathogenic fungus, Beauveria bassiana (Bb), and diatomaceous earth (DE) and their combinations against the red flour beetle, Tribolium castaneum (Herbst) (Tenebrionidae: Coleoptera) on stored wheat (Triticum aestivum L.). The results indicated that the highest concentrations o...

The species Anthrenus (s. str.) serseng sp. nov. from Iraq is described, illustrated and compared with similar species. The new species differs in the structure of the antennae and male genitalia.

The present study was aimed at localizing the cellulolytic system in the larval gut of Zophobas morio. Quantitative analysis revealed maximum cellulolytic activity in the midgut followed by foregut and hindgut. Additionally, examination of physicochemical characterization showed the highest endogenous cellulase activity of 2250.32 U/mg at 40°C and...

Two new species, Eulagius brendelli sp. nov. and Eulagius nepalensis sp. nov. both from Nepal are described, illustrated and compared with the similar species within the group.