Bulletin of Entomological Research最新文献

{"title":"Potential distribution prediction of two destructive rice weevils in China based on an ensemble model.","authors":"Xueping Shi, Mingli Yu, Yongli Fu, Jinyang Wang, Faliang Qin, Xingya Wang","doi":"10.1017/S0007485325100515","DOIUrl":"https://doi.org/10.1017/S0007485325100515","url":null,"abstract":"<p><p>Rice water weevils (RWWs) (<i>Lissorhoptrus oryzophilus</i>) and rice weevils (RW) (<i>Echinocnemus squameus</i>) (both Coleoptera: Curculionidae) are major rice pests that cause significant economic losses in China. Understanding their potential distribution areas is crucial for effective management. This study used the Biomod2 package in R to simulate and predict the current and future potential distributions, changes in suitable areas, shifts in distribution centres, and overlaps under climate change for both pests under three greenhouse gas emission scenarios. By 2023, the suitable areas for RWWs and RWs were 538.52 × 104 km² and 376.05 × 104 km², respectively. The suitable area for the former pest expanded southwestward and northeastward across China, whereas the latter spread mainly into Northeast China. The suitable area for RWWs is projected to remain stable, whereas that for RWs is expected to decline. The distribution centroid of RWWs is anticipated to shift toward southeastern or southwestern Shaanxi, whereas RWs are likely to migrate toward central-eastern or northeastern Shaanxi. The niche overlap between the two pests is high (Schoener's <i>D</i> = 0.658, I = 0.816), with overlap concentrated in central, eastern, and southern China. The key factors influencing their distributions include precipitation of the wettest month (Bio13), mean temperature of the warmest quarter (Bio10), and precipitation of the driest month (Bio14). This study provides a theoretical basis for the prediction of the potential distribution of both pests, which offers valuable insights for the development of effective pest control strategies in China.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"1-12"},"PeriodicalIF":1.6,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145237990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shades of red: several lines of evidence reveal a pest of sugarcane as new species of <i>Mahanarva</i> (Hemiptera: Auchenorrhyncha: Cercopidae).","authors":"Andressa Paladini, Gervásio Silva Carvalho, Diogo Cavalcanti Cabral-de-Mello, Tatiane Casagrande Mariguela, Alexandre Cruz Domahovski, Kim Ribeiro Barão","doi":"10.1017/S0007485325100503","DOIUrl":"https://doi.org/10.1017/S0007485325100503","url":null,"abstract":"<p><p>Many species of spittlebugs (Auchenorrhyncha: Cercopidae) use sugarcane and other grasses as host plants, and when damage is extensive they are considered pests leading tom economic losses. <i>Mahanarva fimbriolata</i> and <i>Mahanarva spectabilis</i> are the most common in sugarcane and can be distinguished mainly by genital morphology. Recently, another morphotype of <i>Mahanarva</i> occurring in sugarcane fields that did not match the morphologies of either of these <i>Mahanarva</i> species mentioned above has been widely collected in Brazil, raising doubts on the identification of <i>Mahanarva</i> species using sugarcane. Accurate specimen identification is critical for sugarcane pest management, because misidentifications can lead to economic losses and inefficient control strategies. Thus, we combined morphology, geometric morphometrics, and molecular techniques to investigate the hypothesis that this morphotype could be considered a new species of <i>Mahanarva.</i> Morphological analyses included examination of male genitalia and tegminal colouration patterns. We also quantified hindwing shapes using geometric morphometrics; and performed a phylogenetic analysis using the mitochondrial COI gene. Morphological evidence distinguished the new morphotype through unique traits in male genitalia. Geometric morphometrics reliably separated species, with over 89% classification accuracy. Molecular analyses confirmed the morphotype as a distinct lineage closely related to <i>M. fimbriolata</i> and <i>M. spectabilis</i>. Thus, we describe <i>M. diakantha</i> sp. n., demonstrating the effectiveness of an integrative approach in resolving taxonomic challenges. Additionally, we provide formal diagnoses for <i>M. fimbriolata</i> and <i>M. spectabilis</i>. This work underscores the importance of precise taxonomy in agroecosystems, supporting sustainable pest management practices.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"1-17"},"PeriodicalIF":1.6,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145231546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance of four major egg parasitoids as biocontrol agents against <i>Spodoptera frugiperda</i> (J. E. Smith) (Lepidoptera: Noctuidae) eggs.","authors":"Veena K, Arunkumar Hosamani, Prabhuraj A, Shivanand Hanchinal, Sharanabasappa S Deshmukh, Adeney de Freitas Bueno, Deeksha M G","doi":"10.1017/S0007485325100485","DOIUrl":"https://doi.org/10.1017/S0007485325100485","url":null,"abstract":"<p><p>Parasitoids are effective biocontrol agents against <i>Spodoptera frugiperda</i>. Here, we studied four egg parasitoids (<i>Trichogramma chilonis, Trichogramma pretiosum, Trichogrammatoidea bactrae</i>, and <i>Telenomus remus</i>) on <i>S. frugiperda</i> eggs under laboratory conditions [25 ± 1 °C, 70 ± 5% RH, 14/10-h (L:D) photoperiod]. Then, <i>Tr. chilonis</i> (the best trichogrammatid species in the laboratory) was studied inside cages (1 m × 1 m) under maize-field conditions. Egg-to-adult periods (days) were recorded among different species, with <i>Te. remus</i> having the longest (10.00 ± 0.89 days) and <i>Tr. bactrae</i> the shortest (7.80 ± 0.66 days) periods. Furthermore, <i>Te. remus</i> exhibited the greatest adult longevity (days) for both males and females, with and without food. Lifespan parasitism under laboratory conditions was the highest for <i>Te. remus</i> (73.60 ± 7.23 eggs), followed by <i>Tr. chilonis</i> (45.40 ± 2.56 eggs) and <i>Tr. pretiosum</i> (42.00 ± 3.70 eggs). Adult emergence (%) was always higher than 90% and the sex ratio was higher than 0.60 for the studied egg parasitoid species. In the cage experiments set up in uncontrolled field conditions, different release densities of <i>Tr. chilonis</i> (50,000, 100,000, and 150,000 parasitoids/ha) were studied. Release densities of 100,000 and 150,0000 parasitoids per hectare were the most effective rates for managing <i>S. frugiperda</i>, with recorded egg parasitism of 71.36% and 72.88%, respectively. These findings provide crucial insights into the biological attributes and parasitism potential of these parasitoids, indicating the optimal release density of 100,000 <i>Tr. chilonis</i>/ha as an integrated pest management strategy against <i>S. frugiperda</i> in maize ecosystems.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"1-7"},"PeriodicalIF":1.6,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145231597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Temperature-dependent life history and demographic traits of the invasive fall armyworm, <i>Spodoptera frugiperda</i> (J.E. Smith) on maize.","authors":"Oshin Bhargav, Naveen Aggarwal, Jawala Jindal","doi":"10.1017/S0007485325100497","DOIUrl":"https://doi.org/10.1017/S0007485325100497","url":null,"abstract":"<p><p>The fall armyworm, <i>Spodoptera frugiperda</i> (J.E. Smith), is a major invasive pest threatening maize production in India. Temperature strongly influences its development, reproduction and population dynamics. This study evaluated the biological performance of <i>S. frugiperda</i> on maize across seven constant temperature regimes (14 ± 1°C to 38 ± 1°C) under controlled laboratory conditions, using the age-stage, two-sex life table approach. Developmental time decreased significantly with rising temperatures, while survival and fecundity peaked at 26 ± 1°C and 30 ± 1°C. The highest values of net reproductive rate (<i>R</i>₀ = 499.91 females/female), intrinsic rate of increase (<i>r</i>_m = 0.25 females/female/day), and finite rate of increase (<i>λ</i> = 1.28 females/day) were recorded at 30 ± 1°C, followed by 26 ± 1°C (<i>R</i>₀ = 467.32, <i>r</i>_m = 0.24, and <i>λ</i> = 1.26, respectively). In contrast, thermal extremes delayed development and adversely affected both survival and reproduction. No development occurred at 38 ± 1°C. Population projections indicated rapid generational turnover at optimal temperatures, with up to nine generations annually at 26 ± 1°C. The temperature range of 26-30 ± 1°C was found to be optimal for both survival and reproduction of <i>S. frugiperda</i>, aligning with <i>kharif</i> season temperatures in North India, particularly Punjab. These conditions promote multiple generations annually, whereas extreme summer or winter temperatures may limit population development. The findings advocate for temperature-informed, location-specific pest control strategies. Intervening during critical developmental windows, especially at the egg and larval stages, can limit population buildup. Insights into the pest's thermal adaptability contribute to the advancement of climate-resilient, sustainable pest management frameworks for maize systems in North India and similar agroclimatic regions.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"1-14"},"PeriodicalIF":1.6,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145231613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Functional characterization of fatty acid synthase gene (<i>FAS</i>) in the reproduction of mirid predator, <i>Cyrtorhinus lividipennis</i> (Hemiptera: Miridae).","authors":"Kui Hu, Ying Wang, Yuanyuan Peng, Yuancui Zhong, Yijie Xu, Ruidong Zhang, Lin Qiu, Fang Liu","doi":"10.1017/S0007485325100473","DOIUrl":"https://doi.org/10.1017/S0007485325100473","url":null,"abstract":"<p><p>Natural enemies serve a crucial role in crop protection through the regulation of pest population dynamics. <i>Cyrtorhinus lividipennis</i> is an important natural enemy of rice planthoppers. Fatty acid synthase (FAS), a multifunctional enzyme crucial for fatty acid biosynthesis, serves as a vital energy source for insect reproduction. However, the function of FAS in the reproductive processes of <i>C. lividipennis</i> remains incompletely understood. In this study, the <i>ClFAS</i> gene was successfully cloned from <i>C. lividipennis</i>. The open reading frame of <i>ClFAS</i> was 7224 bp, encoding a putative protein of 2407 amino acids. The expression levels of <i>ClFAS</i> were notably elevated in the fifth-instar nymphs, adults, as well as in the fat body and ovaries of female individuals. Silencing of <i>ClFAS</i> resulted in a reduction of 58.4%, 34.6%, and 49.0% in the expression levels of <i>ClVg</i> at 1-, 2-, and 3-days post-dsRNA injection, respectively. Furthermore, RNA interference (RNAi)-mediated depletion of <i>ClFAS</i> not only suppressed the Vg protein expression but also significantly impaired oocyte maturation and ovarian development. The fecundity of dsFAS-treated <i>C. lividipennis</i> females was markedly reduced by 49.5%, accompanied by significant decreases of 32.7% in oviposition duration and 26.3% in female adult lifespan. Our findings showed that ClFAS positively regulates the reproduction of <i>C. lividipennis</i> by promoting vitellogenesis and ovarian development, which provides valuable insights into how lipid metabolism governs fecundity in predatory insects.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"1-8"},"PeriodicalIF":1.6,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145184540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Survival and reproductive performance of <i>Rhopalosiphum padi</i> (Hemiptera: Aphididae) on maize husk: evidence for a secondary host facilitating seasonal carryover.","authors":"Wenhua Hou, Linhai Xia, Xiaoxiao Yuan, Xiong Peng, Jaime C Piñero, Maohua Chen","doi":"10.1017/S0007485325100424","DOIUrl":"https://doi.org/10.1017/S0007485325100424","url":null,"abstract":"<p><p>The host plant associations of the bird cherry-oat aphid, <i>Rhopalosiphum padi</i> (L.), a major pest of wheat, before and after wheat harvest remain poorly understood. Overlapping growth of maize and wheat may promote <i>R. padi</i> survival and movement between crops. We examined population dynamics and constructed life tables for <i>R. padi</i> reared on wheat seedlings, maize husks, and maize leaves. Field-collected <i>R. padi</i> survived on both maize tissues, but aphid abundance declined sharply on aging maize leaves, while aphids on maize husks developed successfully. Aphids reared on wheat exhibited the fastest development, longest lifespan (27.89 ± 1.20 days), highest fecundity (98.59 ± 5.61 nymphs), and lowest mortality (2.56%). In contrast, aphids transferred to maize leaves showed reduced longevity (19.62 ± 1.16 days), lower fecundity (33.55 ± 2.47 nymphs), and higher mortality (23.73%). No significant differences in some reproductive parameters were observed between wheat- and maize husk-reared aphids, indicating relatively good performance on maize husks. Aphids transferred from wheat to maize experienced fitness costs, while aphids moved from maize husks back to wheat exhibited improved performance. These findings suggest that maize husks offer a comparatively favourable resource microhabitat for <i>R. padi</i>, potentially serving as a secondary host that supports population persistence after wheat harvest.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"1-11"},"PeriodicalIF":1.6,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145184556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sterility of <i>Cydia pomonella</i> by X ray irradiation as an alternative to gamma radiation for the sterile insect technique - Corrigendum.","authors":"Jing-Han Zhang, Na Li, Hui-Yuan Zhao, Ya-Qi Wang, Xue-Qing Yang, Kong-Ming Wu","doi":"10.1017/S0007485325100461","DOIUrl":"https://doi.org/10.1017/S0007485325100461","url":null,"abstract":"","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"1"},"PeriodicalIF":1.6,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145063561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transcriptional identification of differentially expressed genes during the prepupal-pupal transition in the oriental armyworm, mythimna separata (Walker) (Lepidoptera: Noctuidae) - Erratum.","authors":"Peirong Li, Xinru Li, Wei Wang, Xiaoling Tan, Xiaoqi Wang, Xueqing Yang","doi":"10.1017/S000748532510045X","DOIUrl":"https://doi.org/10.1017/S000748532510045X","url":null,"abstract":"","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"1"},"PeriodicalIF":1.6,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145063475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The relationship between adult preference and offspring performance in the invasive tephritid species, <i>Dacus frontalis</i>, of wild and cultivated cucurbitaceous hosts at different stages of fruit maturity.","authors":"Abir Hafsi, Khaled Abbes, Pierre-François Duyck, Hana Helel, Brahim Chermiti","doi":"10.1017/S0007485325100126","DOIUrl":"https://doi.org/10.1017/S0007485325100126","url":null,"abstract":"<p><p><i>Dacus frontalis</i> (Diptera:Tephritidae), is an emerging pest that causes damage to fruit in Africa and now represent a threat to Cucurbitaceae production in Europe. Understanding interactions between <i>D. frontalis</i> and host plants is important to improve pest management and prevent their invasions in areas where this pest is not yet established. In this study, female preference and larval performance of <i>D. frontalis</i> with regard to wild and cultivated Cucurbitaceae species at different stages of fruit maturity (green, intermediate, and ripe) were examined. Host plant quality, species, and fruit maturity play a major role in oviposition preference under both choice and no-choice conditions. They also influence larval performance (larval survival, development time, and pupal weight). Larval survival rates differed significantly between fruit species and different stage of fruit maturity, ranging from 0.2% to 0.7% in the case of ripe melon and green Bitter apple, respectively. Larval performance was higher in fruit with low soluble sugar, such as green bitter apple. Results revealed that <i>D. frontalis</i> has distinct ovipositional preferences for the cucurbitaceous host plants tested, with a clear preference for cultivated fruit compared with wild fruit. In cultivated cucurbitaceous fruit, the highest number of eggs was laid on the oviposition device containing green cucumber (48 eggs/female) and the lowest on that containing green melon fruit, where there was no oviposition. Females of <i>D. frontalis</i> were able to choose fruit for oviposition that promoted high larval performance, such as cucumber, pumpkin, zucchini, and watermelon particularly at the green stage. This behaviour reveals a positive preference-performance relationship. Predicting the interactions between exotic insects and their potential host plants is important for preventing invasions using Pest Risk Analyses and associated quarantine procedures.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"1-10"},"PeriodicalIF":1.6,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145039150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling host plant associations and cryptic genetic diversity of <i>Miyalachnus sorini</i> (Aphididae: Lachninae) on cherry trees in South Korea.","authors":"Minho Lee, Mariusz Kanturski, Seunghwan Lee","doi":"10.1017/S0007485325100400","DOIUrl":"https://doi.org/10.1017/S0007485325100400","url":null,"abstract":"<p><p>This study presents the first record of <i>Miyalachnus sorini</i> Kanturski & Lee, 2024 (Aphididae: Lachninae) in South Korea, thereby extending its known distribution beyond Japan and identifying a new host plant, <i>Prunus sargentii</i> (Rosaceae). We describe diagnostic morphological traits across multiple life stages and compare them with those of Japanese populations. Comparative analyses with Japanese populations demonstrated consistent morphological differentiation, notably elevated ratios of the ultimate rostral segment to antennal segments across multiple morphs in the Korean population, indicating potential ecological adaptation. DNA barcoding using the mitochondrial cytochrome c oxidase I gene revealed low intraspecific divergence (average 0.2%) and interspecific divergence (average 10.5%) between <i>Miyalachnus</i> sp. and <i>M. sorini</i>. Haplotype analysis was performed to investigate the relationship between host plants and cryptic genetic diversity. These findings enhance our understanding of the morphological and genetic diversity of <i>M. sorini</i> and underscore the importance of monitoring its spread for informed pest management strategies.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"1-10"},"PeriodicalIF":1.6,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}