{"title":"Lost in the city: discovery of the rare ant genus Leptanilla (Hymenoptera: Formicidae) in Macau with description of Leptanilla macauensis sp. nov","authors":"Chi-Man Leong, S. Yamane, B. Guénard","doi":"10.20362/AM.010001","DOIUrl":"https://doi.org/10.20362/AM.010001","url":null,"abstract":"","PeriodicalId":51228,"journal":{"name":"Asian Myrmecology","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2018-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80881494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Macau is a small territory in South East China and one of the most densely populated regions in the world. Previous studies on insect groups have shown that a relatively diverse, yet specific, fauna could still survive in this region. However, to this point, studies on the myrmecofauna of Macau are scarce and to date no species checklist exists. Here, we present the first checklist of Macanese ant species by combining results from recent ant surveys using handcollections and Winkler extractors with published records. During the surveys, 82 species and morphospecies belonging to 37 genera and 8 subfamilies have been collected, with 37 species representing new records for Macau, including an interesting new record of an undescribed Leptanilla species, the second record of the Leptanillinae subfamily for South East China. To date, Macanese ants comprise 105 species/morphospecies and 8 subspecies, after the removal of dubious records present in the literature (though some misidentifications may remain). While still likely incomplete, these results represent the most comprehensive list of ants for Macau, and a baseline for future research on ant diversity in heavily urbanized environments and for understanding the potential consequences of urbanization on native and non-native diversity in Asia.
{"title":"Ants in the city, a preliminary checklist of Formicidae (Hymenoptera) in Macau, one of the most heavily urbanized regions of the world","authors":"Leong Chi‐Man, Shiao Shiuh‐Feng, B. Guénard","doi":"10.20362/AM.009014","DOIUrl":"https://doi.org/10.20362/AM.009014","url":null,"abstract":"Macau is a small territory in South East China and one of the most densely populated regions in the world. Previous studies on insect groups have shown that a relatively diverse, yet specific, fauna could still survive in this region. However, to this point, studies on the myrmecofauna of Macau are scarce and to date no species checklist exists. Here, we present the first checklist of Macanese ant species by combining results from recent ant surveys using handcollections and Winkler extractors with published records. During the surveys, 82 species and morphospecies belonging to 37 genera and 8 subfamilies have been collected, with 37 species representing new records for Macau, including an interesting new record of an undescribed Leptanilla species, the second record of the Leptanillinae subfamily for South East China. To date, Macanese ants comprise 105 species/morphospecies and 8 subspecies, after the removal of dubious records present in the literature (though some misidentifications may remain). While still likely incomplete, these results represent the most comprehensive list of ants for Macau, and a baseline for future research on ant diversity in heavily urbanized environments and for understanding the potential consequences of urbanization on native and non-native diversity in Asia.","PeriodicalId":51228,"journal":{"name":"Asian Myrmecology","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86900106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
W. Jaitrong, B. Guénard, E. Economo, N. Buddhakala, S. Yamane
Laos is one of the most undersampled areas for ant biodiversity. We begin to address this knowledge gap by presenting the first checklist of Laotian ants. The list is based on a literature review and on specimens collected from several localities in Laos. In total, 123 species with three additional subspecies in 47 genera belonging to nine subfamilies are listed, including 62 species recorded for the first time in the country. Comparisons with neighboring countries suggest that this list is still very incomplete. The provincial distribution of ants within Laos also show that most species recorded are from Vientiane Province, the central part of Laos while the majority of other provinces have received very little, if any, ant sampling. Many ant specimens collected from Laos are awaiting identification and future collections should provide many new species records. Keywords: Formicidae, ants, checklist, new records, Laos
{"title":"A Checklist of known ant species of Laos (Hymenoptera: Formicidae)","authors":"W. Jaitrong, B. Guénard, E. Economo, N. Buddhakala, S. Yamane","doi":"10.20362/AM.008019","DOIUrl":"https://doi.org/10.20362/AM.008019","url":null,"abstract":"Laos is one of the most undersampled areas for ant biodiversity. We begin to address this knowledge gap by presenting the first checklist of Laotian ants. The list is based on a literature review and on specimens collected from several localities in Laos. In total, 123 species with three additional subspecies in 47 genera belonging to nine subfamilies are listed, including 62 species recorded for the first time in the country. Comparisons with neighboring countries suggest that this list is still very incomplete. The provincial distribution of ants within Laos also show that most species recorded are from Vientiane Province, the central part of Laos while the majority of other provinces have received very little, if any, ant sampling. Many ant specimens collected from Laos are awaiting identification and future collections should provide many new species records. Keywords: Formicidae, ants, checklist, new records, Laos","PeriodicalId":51228,"journal":{"name":"Asian Myrmecology","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2016-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79773245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Despite its relatively large size among the Myrmicinae of the Indomalayan region, collection events of Paratopula Wheeler are rare. Here we discuss the discovery of Paratopula in Hong Kong and present Paratopula bauhinia sp. nov as a new species. This addition brings the number of globally described species for the genus to twelve species, four of which are known only from the reproductive caste. Paratopula bauhinia sp. nov . can be distinguished from previously described species by the combination of the following features: 10 teeth on the masticatory margin of mandibles, apically acute hairs, a rounded median portion of the anterior margin of the pronotum, postpetiole broader than long, and straight, blunt propodeal spines. A revised key for the eight species of Paratopula known from the worker caste is provided. Additionally, the female caste of Rotastruma stenoceps Bolton is described for the first time. The rarity of these two genera are also discussed on the basis of their potentially nocturnal and arboreal habits.
{"title":"Descriptions of a new species and the gyne in the rarely collected arboreal genera Paratopula and Rotastruma (Hymenoptera: Formicidae) from Hong Kong, with a discussion on their ecology","authors":"Yingxue Luo, B. Guénard","doi":"10.20362/AM.008016","DOIUrl":"https://doi.org/10.20362/AM.008016","url":null,"abstract":"Despite its relatively large size among the Myrmicinae of the Indomalayan region, collection events of Paratopula Wheeler are rare. Here we discuss the discovery of Paratopula in Hong Kong and present Paratopula bauhinia sp. nov as a new species. This addition brings the number of globally described species for the genus to twelve species, four of which are known only from the reproductive caste. Paratopula bauhinia sp. nov . can be distinguished from previously described species by the combination of the following features: 10 teeth on the masticatory margin of mandibles, apically acute hairs, a rounded median portion of the anterior margin of the pronotum, postpetiole broader than long, and straight, blunt propodeal spines. A revised key for the eight species of Paratopula known from the worker caste is provided. Additionally, the female caste of Rotastruma stenoceps Bolton is described for the first time. The rarity of these two genera are also discussed on the basis of their potentially nocturnal and arboreal habits.","PeriodicalId":51228,"journal":{"name":"Asian Myrmecology","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2016-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83832999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Wargui, J. Offenberg, A. Sinzogan, A. Adandonon, D. Kossou, J. Vayssières
Weaver ants (Oecophylla spp.) are widely used as effective biological control agents. In order to optimize their use, ant abundance needs to be tracked. As several methods have been used to estimate ant abundance on plantation trees, abundances are not comparable between studies and no guideline is available on which method to apply in a particular study. This study compared four existing methods: three methods based on the number of ant trails on the main branches of a tree (called the Peng 1, Peng 2 and Offenberg index) and one method based on the number of ant nests per tree. Branch indices did not produce equal scores and cannot be compared directly. The Peng 1 index was the fastest to assess, but showed only limited seasonal fluctuations when ant abundance was high, because it approached its upper limit. The Peng 2 and Offenberg indices were lower and not close to the upper limit and therefore showed fluctuations throughout the season. The numbers of nests showed high fluctuations unlikely to reflect ant abundance, but rather reflected nest building behaviour influenced by tree phenology. In conclusion, nest counting is not recommended, whereas the Peng 1 index can track dynamics at low ant abundance and the Peng 2 and Offenberg indices can be used in most situations. (Resume d'auteur)
{"title":"Comparing different methods to assess weaver ant abundance in plantation trees","authors":"R. Wargui, J. Offenberg, A. Sinzogan, A. Adandonon, D. Kossou, J. Vayssières","doi":"10.20362/AM.007017","DOIUrl":"https://doi.org/10.20362/AM.007017","url":null,"abstract":"Weaver ants (Oecophylla spp.) are widely used as effective biological control agents. In order to optimize their use, ant abundance needs to be tracked. As several methods have been used to estimate ant abundance on plantation trees, abundances are not comparable between studies and no guideline is available on which method to apply in a particular study. This study compared four existing methods: three methods based on the number of ant trails on the main branches of a tree (called the Peng 1, Peng 2 and Offenberg index) and one method based on the number of ant nests per tree. Branch indices did not produce equal scores and cannot be compared directly. The Peng 1 index was the fastest to assess, but showed only limited seasonal fluctuations when ant abundance was high, because it approached its upper limit. The Peng 2 and Offenberg indices were lower and not close to the upper limit and therefore showed fluctuations throughout the season. The numbers of nests showed high fluctuations unlikely to reflect ant abundance, but rather reflected nest building behaviour influenced by tree phenology. In conclusion, nest counting is not recommended, whereas the Peng 1 index can track dynamics at low ant abundance and the Peng 2 and Offenberg indices can be used in most situations. (Resume d'auteur)","PeriodicalId":51228,"journal":{"name":"Asian Myrmecology","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2015-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76160774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The genus Simopone in the subfamily Cerapachyinae is recorded in China for the first time with description of a new species, S. yunnanensis sp. nov.. The new species is closely related to S. oculata Radchenko 1993, but differs distinctly from the latter. An identification key based on worker caste is provided to the grandidieri-group species.
{"title":"Simopone yunnanensis sp. nov. – the first record of Simopone Forel, 1891 from China (Hymenoptera, Formicidae, Cerapachyinae)","authors":"Zhilin Chen, Shan-yi Zhou, Liwei Liang","doi":"10.5281/ZENODO.29220","DOIUrl":"https://doi.org/10.5281/ZENODO.29220","url":null,"abstract":"The genus Simopone in the subfamily Cerapachyinae is recorded in China for the first time with description of a new species, S. yunnanensis sp. nov.. The new species is closely related to S. oculata Radchenko 1993, but differs distinctly from the latter. An identification key based on worker caste is provided to the grandidieri-group species.","PeriodicalId":51228,"journal":{"name":"Asian Myrmecology","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2015-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73978135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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