Y. M. Zhang, M. Gates, P. Hanson, Sergio Jansen-González
A new genus of a Neotropical gall inducing tetrastichine eulophid on Araceae is described and confirmed using Ultraconserved Elements (UCE) phylogenomic data. Arastichus Gates, Hanson, Jansen-González & Zhang, gen. nov., includes two new species and one species transferred from Aprostocetus Westwood: A. capipunctata Gates, Hanson, Jansen-González & Zhang, sp. nov., A. gallicola (Ferrière), comb. nov., and A. gibernau, Gates, Hanson, Jansen-González & Zhang, sp. nov.
{"title":"Description of a Neotropical gall inducer on Araceae: Arastichus, gen. nov. (Hymenoptera, Eulophidae) and two new species","authors":"Y. M. Zhang, M. Gates, P. Hanson, Sergio Jansen-González","doi":"10.3897/jhr.92.85967","DOIUrl":"https://doi.org/10.3897/jhr.92.85967","url":null,"abstract":"A new genus of a Neotropical gall inducing tetrastichine eulophid on Araceae is described and confirmed using Ultraconserved Elements (UCE) phylogenomic data. Arastichus Gates, Hanson, Jansen-González & Zhang, gen. nov., includes two new species and one species transferred from Aprostocetus Westwood: A. capipunctata Gates, Hanson, Jansen-González & Zhang, sp. nov., A. gallicola (Ferrière), comb. nov., and A. gibernau, Gates, Hanson, Jansen-González & Zhang, sp. nov.","PeriodicalId":50185,"journal":{"name":"Journal of Hymenoptera Research","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43754847","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}
A new species, namely Methocha transcarinatasp. nov. is described and illustrated from Guangdong and Hainan, China. Additionally, M. cariniventris Narita & Mita, 2018 and M. kandyensis Krombein, 1982 are newly recorded from China. A key to all the known species of the genus from China is updated.
{"title":"A new species of Methocha Latreille (Hymenoptera, Tiphiidae, Methochinae) from China, with a key to the Chinese species","authors":"Xianghua Liao, Yinxia Guo, Bin Chen, Tingjing Li","doi":"10.3897/jhr.92.87032","DOIUrl":"https://doi.org/10.3897/jhr.92.87032","url":null,"abstract":"A new species, namely Methocha transcarinatasp. nov. is described and illustrated from Guangdong and Hainan, China. Additionally, M. cariniventris Narita & Mita, 2018 and M. kandyensis Krombein, 1982 are newly recorded from China. A key to all the known species of the genus from China is updated.","PeriodicalId":50185,"journal":{"name":"Journal of Hymenoptera Research","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43477977","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}
M. Olmi, B. Eggs, L. Capradossi, T. W. van de Kamp, E. Perkovsky, A. Guglielmino, D. Vasilenko
A new fossil species of Dryinidae (Hymenoptera, Chrysidoidea) from upper Eocene Rovno amber (Ukraine) is described: Bocchus rexsp. nov. It is compared with two other species of Bocchus known from European amber: B. primaevus Martins & Melo from Baltic amber and B. schmalhauseni Perkovsky, Olmi, Vasilenko, Capradossi & Guglielmino from Rovno amber. A new key to the Cretaceous and Paleogene species of Bocchus is presented. The Dryininae are the most common representatives in all the amber dryinid faunas since the mid-Cretaceous. The Rovno amber fauna is an exception; possible explanations for the abundance of Bocchus species within this amber are presented.
{"title":"A new species of Bocchus from upper Eocene Rovno amber (Hymenoptera, Dryinidae)","authors":"M. Olmi, B. Eggs, L. Capradossi, T. W. van de Kamp, E. Perkovsky, A. Guglielmino, D. Vasilenko","doi":"10.3897/jhr.92.87084","DOIUrl":"https://doi.org/10.3897/jhr.92.87084","url":null,"abstract":"A new fossil species of Dryinidae (Hymenoptera, Chrysidoidea) from upper Eocene Rovno amber (Ukraine) is described: Bocchus rexsp. nov. It is compared with two other species of Bocchus known from European amber: B. primaevus Martins & Melo from Baltic amber and B. schmalhauseni Perkovsky, Olmi, Vasilenko, Capradossi & Guglielmino from Rovno amber. A new key to the Cretaceous and Paleogene species of Bocchus is presented. The Dryininae are the most common representatives in all the amber dryinid faunas since the mid-Cretaceous. The Rovno amber fauna is an exception; possible explanations for the abundance of Bocchus species within this amber are presented.","PeriodicalId":50185,"journal":{"name":"Journal of Hymenoptera Research","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42851439","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}
The six species of the Epeolus cruciger species group from Asia are reviewed. Two new species, Epeolus asiaticus Astafurova & Proshchalykin, sp. nov. (Mongolia, Russia) and E. gorodkovi Astafurova, sp. nov. (Tajikistan, Afghanistan) are described and illustrated. Epeolus alpinus Friese, 1893 is newly recorded from Kazakhstan; E. cruciger (Panzer, 1799) is newly recorded from Turkmenistan, Uzbekistan, and Kyrgyzstan; and E. mongolicus Astafurova & Proshchalykin, 2021 is newly recorded from Kyrgyzstan and Russia. An identification key for both sexes of all Asian members of this species group is presented.
{"title":"Review of the Epeolus cruciger species group (Hymenoptera, Apidae, Epeolus Latreille, 1802) of Asia, with the description of two new species","authors":"Yulia V. Astafurova, M. Proshchalykin","doi":"10.3897/jhr.92.90098","DOIUrl":"https://doi.org/10.3897/jhr.92.90098","url":null,"abstract":"The six species of the Epeolus cruciger species group from Asia are reviewed. Two new species, Epeolus asiaticus Astafurova & Proshchalykin, sp. nov. (Mongolia, Russia) and E. gorodkovi Astafurova, sp. nov. (Tajikistan, Afghanistan) are described and illustrated. Epeolus alpinus Friese, 1893 is newly recorded from Kazakhstan; E. cruciger (Panzer, 1799) is newly recorded from Turkmenistan, Uzbekistan, and Kyrgyzstan; and E. mongolicus Astafurova & Proshchalykin, 2021 is newly recorded from Kyrgyzstan and Russia. An identification key for both sexes of all Asian members of this species group is presented.","PeriodicalId":50185,"journal":{"name":"Journal of Hymenoptera Research","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44003606","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}
P. Bogusch, Petra Houfková Marešová, Alena Astapenková, P. Heneberg
The bee genus Pseudoanthidium is represented by nine species in Europe. Of these nine species, Pseudoanthidium nanum is the most widespread, occurs mainly in xerothermic open habitats and creates nests in various cavity types. In this study, we provide information on the nest structure of this species in reed stalks and oak galls and about its parasitic species. We provide the first report of P. nanum as a host of Xylophrurus augustus (Ichneumonidae). The biology of the much rarer related species Pseudoanthidium tenellum is described here for the first time. This species occurs in terrestrial reed beds and wet meadows with the presence of reed galls and flowering plants in the family Asteraceae and is rare throughout its entire distribution area. This species nests inside reed galls induced by Lipara frit flies, and the nest structure is very similar to that of P. nanum. We report new parasitic species of this bee, namely, the cuckoo bee Stelis punctulatissima, the predator-inquiline Gasteruption nigrescens and two parasitoids, Leucospis biguetina and Miltogramma punctata. This bee collects pollen mainly from wetland plants in Bidens and Pulicaria. We also describe mature larvae of both species. The larvae do not differ greatly from one another; only the shape of mandibles and sclerotisation of mouthparts are slightly different. Further research should address the ecological requirements of P. tenellum, a poorly understood reed gall inquiline.
{"title":"Nest structure, associated parasites and morphology of mature larvae of two European species of Pseudoanthidium Friese, 1898 (Hymenoptera, Megachilidae)","authors":"P. Bogusch, Petra Houfková Marešová, Alena Astapenková, P. Heneberg","doi":"10.3897/jhr.92.87215","DOIUrl":"https://doi.org/10.3897/jhr.92.87215","url":null,"abstract":"The bee genus Pseudoanthidium is represented by nine species in Europe. Of these nine species, Pseudoanthidium nanum is the most widespread, occurs mainly in xerothermic open habitats and creates nests in various cavity types. In this study, we provide information on the nest structure of this species in reed stalks and oak galls and about its parasitic species. We provide the first report of P. nanum as a host of Xylophrurus augustus (Ichneumonidae). The biology of the much rarer related species Pseudoanthidium tenellum is described here for the first time. This species occurs in terrestrial reed beds and wet meadows with the presence of reed galls and flowering plants in the family Asteraceae and is rare throughout its entire distribution area. This species nests inside reed galls induced by Lipara frit flies, and the nest structure is very similar to that of P. nanum. We report new parasitic species of this bee, namely, the cuckoo bee Stelis punctulatissima, the predator-inquiline Gasteruption nigrescens and two parasitoids, Leucospis biguetina and Miltogramma punctata. This bee collects pollen mainly from wetland plants in Bidens and Pulicaria. We also describe mature larvae of both species. The larvae do not differ greatly from one another; only the shape of mandibles and sclerotisation of mouthparts are slightly different. Further research should address the ecological requirements of P. tenellum, a poorly understood reed gall inquiline.","PeriodicalId":50185,"journal":{"name":"Journal of Hymenoptera Research","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45795921","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}
The Palearctic species of the genus Fidiobia are revised, seventeen new species are described (F. bohemicasp. nov.; F. brevialissp. nov.; F. communissp. nov.; F. gallicasp. nov.; F. hirtasp. nov.; F. insoonaesp. nov.; F. lisenchiaesp. nov.; F. longiclavasp. nov.; F. nipponicasp. nov.; F. platystasioidessp. nov.; F. politoidessp. nov.; F. pronotatoidessp. nov.; F. roataisp. nov.; F. rugosifronsoidessp. nov.; F. sashaisp. nov.; F. tripotinisp. nov.; F. vladlubomirisp. nov.), and eleven species (F. brevinotaula Veenakumari et al., 2018; F. filicornis Buhl, 2014; F. flaviabdominalis Veenakumari et al., 2018; F. hispanica Popovici & Buhl, 2010; F. hofferi Kozlov, 1978; F. polita Buhl, 1998; F. pronotata Szabó, 1958; F. rugosifrons Crawford, 1916; F. striatitergitis (Szabó, 1962); F. synergorum (Kieffer, 1921); F. vanharteni Buhl, 2010) are redescribed. A key for identification of females and distributional data for each species are provided. Brachypterous specimens are reported for F. rugosifrons and F. hofferi. Fidiobia gordoni Popovici & Buhl, 2010 is treated as a junior synonym of Fidiobia striatitergitis (Szabó, 1962).
{"title":"Revision of the Palearctic species of Fidiobia Ashmead (Hymenoptera, Platygastroidea)","authors":"O. Popovici, L. Masner, Z. Lahey, E. Talamas","doi":"10.3897/jhr.92.85040","DOIUrl":"https://doi.org/10.3897/jhr.92.85040","url":null,"abstract":"The Palearctic species of the genus Fidiobia are revised, seventeen new species are described (F. bohemicasp. nov.; F. brevialissp. nov.; F. communissp. nov.; F. gallicasp. nov.; F. hirtasp. nov.; F. insoonaesp. nov.; F. lisenchiaesp. nov.; F. longiclavasp. nov.; F. nipponicasp. nov.; F. platystasioidessp. nov.; F. politoidessp. nov.; F. pronotatoidessp. nov.; F. roataisp. nov.; F. rugosifronsoidessp. nov.; F. sashaisp. nov.; F. tripotinisp. nov.; F. vladlubomirisp. nov.), and eleven species (F. brevinotaula Veenakumari et al., 2018; F. filicornis Buhl, 2014; F. flaviabdominalis Veenakumari et al., 2018; F. hispanica Popovici & Buhl, 2010; F. hofferi Kozlov, 1978; F. polita Buhl, 1998; F. pronotata Szabó, 1958; F. rugosifrons Crawford, 1916; F. striatitergitis (Szabó, 1962); F. synergorum (Kieffer, 1921); F. vanharteni Buhl, 2010) are redescribed. A key for identification of females and distributional data for each species are provided. Brachypterous specimens are reported for F. rugosifrons and F. hofferi. Fidiobia gordoni Popovici & Buhl, 2010 is treated as a junior synonym of Fidiobia striatitergitis (Szabó, 1962).","PeriodicalId":50185,"journal":{"name":"Journal of Hymenoptera Research","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48364156","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}
The first discovery of the genus Megischus Brullé, 1846 (Hymenoptera: Stephanidae) from Ryukyu Islands is reported and Megischus baogong Ge & Tan, sp. nov., is described and illustrated.
本文报道了1846年在琉球群岛首次发现的小金龟子属（膜翅目：金龟子科），并对其进行了描述和说明。
{"title":"First discovery of Megischus Brullé (Hymenoptera, Stephanidae) in Ryukyu Islands, with description of a new species","authors":"Si-Xun Ge, Li-Li Ren, J. Tan","doi":"10.3897/jhr.91.85373","DOIUrl":"https://doi.org/10.3897/jhr.91.85373","url":null,"abstract":"The first discovery of the genus Megischus Brullé, 1846 (Hymenoptera: Stephanidae) from Ryukyu Islands is reported and Megischus baogong Ge & Tan, sp. nov., is described and illustrated.","PeriodicalId":50185,"journal":{"name":"Journal of Hymenoptera Research","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42660361","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}
C. Praz, D. Genoud, Killian Vaucher, Dimitri Bénon, J. Monks, T. Wood
Using a combination of DNA barcodes and morphology, we examine species boundaries in bees of the genus Andrena subgenus Taeniandrena in Europe. First, we solve the long controversy surrounding the status of Andrena ovatula (Kirby, 1802) and A. albofasciata Thomson, 1870, proposed to represent distinct species nearly 100 years ago, but mostly treated as conspecific in recent studies. Our results unambiguously support the presence of two taxa that are often found in sympatry: the first taxon, referred to as A. ovatula, is present in Northern Europe but also in Southern Europe along the Mediterranean coast; the second taxon is referred to as A. afzeliella (Kirby, 1802), stat. rev., with A. albofasciata considered to be a junior synonym (syn. nov.), and is widely distributed in Europe. Second, we show that another widely distributed species has hitherto been overlooked in Europe: A. ovata Schenck, 1853, stat. rev. Third, we demonstrate that two taxa currently treated as subspecies should be given specific rank due to significant morphological and genetic differences: A. croceiventris Morawitz, 1871, stat. rev., so far treated as a subspecies of A. similis Smith, 1849, and A. vocifera Warncke, 1975, stat. nov., so far treated as a subspecies of A. gelriae van der Vecht, 1927. Both A. croceiventris and A. vocifera have particularly restricted ranges in Europe, being known only from central to southern Italy and Sicily, and continental France, respectively. Fourth, we describe a new species from Sardinia and Corsica, A. antonellaesp. nov. Lastly, the following new synonymies are proposed: A. similis, A. ocreata cyprisina Warncke, 1975 and A. similis caraimica Osytshnjuk, 1994 are placed in synonymy with A. russula Lepeletier, 1841 (syn. nov.); A. fuscata (Kirby, 1802), A. canescens Schenck, 1853 and A. pseudovatula Alfken, 1926 are placed in synonymy with A. afzeliella (syn. nov.). Lectotypes are designated for A. afzeliella, A. fuscata (Kirby, 1802), A. ovata and A. wilkella (Kirby, 1802). Our results suggest a particularly fast diversification in this group of bees, leading to the presence of numerous species exhibiting particularly restricted geographic ranges. We discuss the implications for conservation of this astonishing cryptic diversity in European bees.
使用DNA条形码和形态学的组合，我们检查了欧洲带尾蜂亚属Andrena蜜蜂的物种边界。首先，我们解决了围绕Andrena ovatula（Kirby，1802）和A.albofasciata Thomson（1870）的地位的长期争议，它们在近100年前被提出代表不同的物种，但在最近的研究中大多被视为同种。我们的研究结果明确支持了两个常见于同科的分类群的存在：第一个分类群被称为A.ovatula，存在于北欧，但也存在于地中海沿岸的南欧；第二个分类单元被称为A.afzeliella（Kirby，1802），stat.rev.，其中A.albofasciata被认为是初级同义词（syn.nov.），在欧洲广泛分布。第二，我们证明了另一个迄今为止在欧洲被忽视的广泛分布的物种：A.ovata Schenck，1853，stat.rev。第三，我们证明，由于显著的形态和遗传差异，目前被视为亚种的两个分类群应该被赋予特定的等级：A.croceivetris Morawitz，1871，stat.ev.，到目前为止被视为A.similis Smith的亚种，1849，和A.vocifera-Warncke，1975年，stat.nov.，到目前为止被视为A.gelriae van der Vecht的亚种，1927年。A.croceiventris和A.vocifera在欧洲的范围都特别有限，分别只在意大利中部和南部、西西里岛以及法国大陆。第四，我们描述了来自撒丁岛和科西嘉岛的一个新种，a.antonellaesp。最后，提出了以下新的同义词：A.similis，A.ocreata cypisina Warncke，1975和A.similis-caraimica Osytshnjuk，1994与A.russula Lepeletier，1841（syn.nov.）同义；A.fuscata（Kirby，1802）、A.canescens Schenck，1853和A.pseudovatula Alfken，1926与A.afzeliella（syn.nov.）同义。Lectypes被指定为A.afzeriella、A.fuscatta（Kirby（1802））、A.ovata和A.wilkella（Kirby），1802。我们的研究结果表明，这群蜜蜂的多样化速度特别快，导致许多物种的地理范围特别有限。我们讨论了欧洲蜜蜂这种惊人的神秘多样性对保护的影响。
{"title":"Unexpected levels of cryptic diversity in European bees of the genus Andrena subgenus Taeniandrena (Hymenoptera, Andrenidae): implications for conservation","authors":"C. Praz, D. Genoud, Killian Vaucher, Dimitri Bénon, J. Monks, T. Wood","doi":"10.3897/jhr.91.82761","DOIUrl":"https://doi.org/10.3897/jhr.91.82761","url":null,"abstract":"Using a combination of DNA barcodes and morphology, we examine species boundaries in bees of the genus Andrena subgenus Taeniandrena in Europe. First, we solve the long controversy surrounding the status of Andrena ovatula (Kirby, 1802) and A. albofasciata Thomson, 1870, proposed to represent distinct species nearly 100 years ago, but mostly treated as conspecific in recent studies. Our results unambiguously support the presence of two taxa that are often found in sympatry: the first taxon, referred to as A. ovatula, is present in Northern Europe but also in Southern Europe along the Mediterranean coast; the second taxon is referred to as A. afzeliella (Kirby, 1802), stat. rev., with A. albofasciata considered to be a junior synonym (syn. nov.), and is widely distributed in Europe. Second, we show that another widely distributed species has hitherto been overlooked in Europe: A. ovata Schenck, 1853, stat. rev. Third, we demonstrate that two taxa currently treated as subspecies should be given specific rank due to significant morphological and genetic differences: A. croceiventris Morawitz, 1871, stat. rev., so far treated as a subspecies of A. similis Smith, 1849, and A. vocifera Warncke, 1975, stat. nov., so far treated as a subspecies of A. gelriae van der Vecht, 1927. Both A. croceiventris and A. vocifera have particularly restricted ranges in Europe, being known only from central to southern Italy and Sicily, and continental France, respectively. Fourth, we describe a new species from Sardinia and Corsica, A. antonellaesp. nov. Lastly, the following new synonymies are proposed: A. similis, A. ocreata cyprisina Warncke, 1975 and A. similis caraimica Osytshnjuk, 1994 are placed in synonymy with A. russula Lepeletier, 1841 (syn. nov.); A. fuscata (Kirby, 1802), A. canescens Schenck, 1853 and A. pseudovatula Alfken, 1926 are placed in synonymy with A. afzeliella (syn. nov.). Lectotypes are designated for A. afzeliella, A. fuscata (Kirby, 1802), A. ovata and A. wilkella (Kirby, 1802). Our results suggest a particularly fast diversification in this group of bees, leading to the presence of numerous species exhibiting particularly restricted geographic ranges. We discuss the implications for conservation of this astonishing cryptic diversity in European bees.","PeriodicalId":50185,"journal":{"name":"Journal of Hymenoptera Research","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45674119","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}
Several phragmotic species in the ant genus Carebara Westwood, 1840 with a cephalic shield are known from the Old World, but species with an anteriorly truncated head seem to be unknown until now. A new species, resembling the phragmotic workers of the ant genus Colobopsis, is here described as Carebara colobopsis Hosoishi & Yamane, sp. nov., based on major and minor worker found in Cambodia. This new species is similar to Carebara acutispina (Xu) and C. obtusidenta (Xu) in some important characters, but distinguished from the latter two by distinct metanotum and deep groove in front of metanotal disc in the major worker, and longer head and deep metanotal groove in the minor worker. This is the first confirmed record of a truncated phragmotic head in the major worker of the genus Carebara. We propose the Carebara acutispina species group to include all the three species, present a diagnosis of this group, and provide a key to species based on the major and minor worker castes.
{"title":"Discovery of a new phragmotic species of the ant genus Carebara Westwood, 1840 (Hymenoptera, Formicidae) from Cambodia","authors":"S. Hosoishi, S. Yamane, H. Sokh","doi":"10.3897/jhr.91.82490","DOIUrl":"https://doi.org/10.3897/jhr.91.82490","url":null,"abstract":"Several phragmotic species in the ant genus Carebara Westwood, 1840 with a cephalic shield are known from the Old World, but species with an anteriorly truncated head seem to be unknown until now. A new species, resembling the phragmotic workers of the ant genus Colobopsis, is here described as Carebara colobopsis Hosoishi & Yamane, sp. nov., based on major and minor worker found in Cambodia. This new species is similar to Carebara acutispina (Xu) and C. obtusidenta (Xu) in some important characters, but distinguished from the latter two by distinct metanotum and deep groove in front of metanotal disc in the major worker, and longer head and deep metanotal groove in the minor worker. This is the first confirmed record of a truncated phragmotic head in the major worker of the genus Carebara. We propose the Carebara acutispina species group to include all the three species, present a diagnosis of this group, and provide a key to species based on the major and minor worker castes.","PeriodicalId":50185,"journal":{"name":"Journal of Hymenoptera Research","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45713000","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}
N. Bulakhova, Z. A. Zhigulskaya, Lyudmila P. Gashkova, D. Berman
Among the factors contributing to the initiation of outbreaks of the Siberian moth, a dangerous pest of the coniferous forests of Northern Eurasia, it is considered important to reduce the regulatory impact of entomophages. One of the most effective regulators of the pest abundance is the egg parasitoid wasp Telenomus tetratomus (Thomson, 1861). There is an established opinion that T. tetratomus is less cold-resistant than caterpillars of the Siberian moth, and outbreaks of the pest are provoked by cold winters, during which conditions (low temperatures and low snow cover depth) are tolerated by the moth caterpillars but lead to death of the parasitoid. However, the lethal temperature for T. tetratomus was determined in an insufficiently controlled experiment more than 60 years ago. We evaluated one of the cold hardiness characteristics of T. tetratomus, the supercooling point (SCP), which had not been measured previously. Both the host and the parasitoid overwinter in a supercooled state, and freezing is lethal to both. The mean SCP of T. tetratomus (-21.2±0.2 °C) was found to be 6.3 °C lower than the SCP of Siberian moth caterpillars. Comparison of SCP distributions and mortality rates at several temperatures allows us to tentatively estimate 50% mortality temperature of the wasp – about -16 °C. The obtained result, analysis of temperatures in the litter of various types of coniferous forests, and published data indicate that the asynchronous mortality of the host and its main parasitoid during wintering, due to differences in cold hardiness, can be considered as the cause of outbreaks of the Siberian moth mass reproduction only with caution.
{"title":"On cold hardiness of the egg parasitoid wasp Telenomus tetratomus (Thomson, 1861) (Hymenoptera, Scelionidae) – a population regulator of the Siberian moth","authors":"N. Bulakhova, Z. A. Zhigulskaya, Lyudmila P. Gashkova, D. Berman","doi":"10.3897/jhr.91.83765","DOIUrl":"https://doi.org/10.3897/jhr.91.83765","url":null,"abstract":"Among the factors contributing to the initiation of outbreaks of the Siberian moth, a dangerous pest of the coniferous forests of Northern Eurasia, it is considered important to reduce the regulatory impact of entomophages. One of the most effective regulators of the pest abundance is the egg parasitoid wasp Telenomus tetratomus (Thomson, 1861). There is an established opinion that T. tetratomus is less cold-resistant than caterpillars of the Siberian moth, and outbreaks of the pest are provoked by cold winters, during which conditions (low temperatures and low snow cover depth) are tolerated by the moth caterpillars but lead to death of the parasitoid. However, the lethal temperature for T. tetratomus was determined in an insufficiently controlled experiment more than 60 years ago. We evaluated one of the cold hardiness characteristics of T. tetratomus, the supercooling point (SCP), which had not been measured previously. Both the host and the parasitoid overwinter in a supercooled state, and freezing is lethal to both. The mean SCP of T. tetratomus (-21.2±0.2 °C) was found to be 6.3 °C lower than the SCP of Siberian moth caterpillars. Comparison of SCP distributions and mortality rates at several temperatures allows us to tentatively estimate 50% mortality temperature of the wasp – about -16 °C. The obtained result, analysis of temperatures in the litter of various types of coniferous forests, and published data indicate that the asynchronous mortality of the host and its main parasitoid during wintering, due to differences in cold hardiness, can be considered as the cause of outbreaks of the Siberian moth mass reproduction only with caution.","PeriodicalId":50185,"journal":{"name":"Journal of Hymenoptera Research","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41948568","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}
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