ABSTRACT Figuladra is a poorly understood genus of camaenid land snail endemic to subtropical eastern Australia, comprising species that inhabit either dry rainforests in the coastal hinterland or dry sclerophyll forests further inland. Given that the genus occurs in areas that have seen extensive land clearing, such as the inland brigalow scrub (savannah) and coastal vine thickets (dry rainforest), resolution of this genus is required to inform conservation efforts within these critical landscapes. Here we use an integrative approach based on comparative analyses of mitochondrial DNA sequences and key morphological features to review the systematic relationships within the group. Specifically, we performed Maximum Likelihood and Bayesian analyses of concatenated DNA sequences of two partial mitochondrial genes (16S and COI) to reconstruct the phylogenetic relationships of Figuladra. We subsequently examined features of the reproductive system that are considered to be useful in diagnosing genera (whole genitalia) and species (penial architecture) within the Camaenidae. Based on patterns of molecular differentiation and an assessment of the anatomy, we propose a more restrictive definition of Figuladra and describe two new monotypic genera for species that were previously assigned to Figuladra; Euryladra gen. nov. for Varohadra incei mattea Iredale, 1933 and Brigaladra gen. nov. for Varohadra volgiola Iredale, 1933. These two new genera differ from Figuladra sensu stricto in exhibiting distinctive epiphallic coiling patterns and anatomical differences of the penis–epiphallus configuration. The study shows that these three genera, and allied taxa, reveal contrasting patterns of diversity and distribution in two neighbouring habitat types: high levels of diversity and endemism in fire-sensitive seasonal subtropical forests juxtaposed against low diversity in large intervening areas of regularly burnt savannah and open woodlands.
{"title":"Two new genera of land snail from dry subtropical forests of eastern Australia: Brigaladra gen. nov. and Euryladra gen. nov. (Eupulmonata: Camaenidae)","authors":"Lorelle Stanisic, F. Köhler, C. McDougall","doi":"10.1071/IS21075","DOIUrl":"https://doi.org/10.1071/IS21075","url":null,"abstract":"ABSTRACT Figuladra is a poorly understood genus of camaenid land snail endemic to subtropical eastern Australia, comprising species that inhabit either dry rainforests in the coastal hinterland or dry sclerophyll forests further inland. Given that the genus occurs in areas that have seen extensive land clearing, such as the inland brigalow scrub (savannah) and coastal vine thickets (dry rainforest), resolution of this genus is required to inform conservation efforts within these critical landscapes. Here we use an integrative approach based on comparative analyses of mitochondrial DNA sequences and key morphological features to review the systematic relationships within the group. Specifically, we performed Maximum Likelihood and Bayesian analyses of concatenated DNA sequences of two partial mitochondrial genes (16S and COI) to reconstruct the phylogenetic relationships of Figuladra. We subsequently examined features of the reproductive system that are considered to be useful in diagnosing genera (whole genitalia) and species (penial architecture) within the Camaenidae. Based on patterns of molecular differentiation and an assessment of the anatomy, we propose a more restrictive definition of Figuladra and describe two new monotypic genera for species that were previously assigned to Figuladra; Euryladra gen. nov. for Varohadra incei mattea Iredale, 1933 and Brigaladra gen. nov. for Varohadra volgiola Iredale, 1933. These two new genera differ from Figuladra sensu stricto in exhibiting distinctive epiphallic coiling patterns and anatomical differences of the penis–epiphallus configuration. The study shows that these three genera, and allied taxa, reveal contrasting patterns of diversity and distribution in two neighbouring habitat types: high levels of diversity and endemism in fire-sensitive seasonal subtropical forests juxtaposed against low diversity in large intervening areas of regularly burnt savannah and open woodlands.","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"36 1","pages":"506 - 532"},"PeriodicalIF":2.2,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47679381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lauren G. Ashman, D. Hartley, M. Jin, David M. Rowell, L. Teasdale, A. Ślipiński, A. Zwick
ABSTRACT Rhytiphora Audinet-Serville, 1835 is the most speciose longhorn beetle (Cerambycidae Latreille, 1802) genus in Australia, with ~200 species (from nearly 40 former genera, now synonymised into one) distributed across the entire continent. We used mitochondrial genome data from whole genome shotgun sequencing and COI barcoding of museum specimens to reconstruct the phylogeny of 68 Rhytiphora species, and analysed the morphological diversity and biogeographic history. We recovered a monophyletic Rhytiphora containing two distinct clades, within which all of the former genera (except Achriotypa Pascoe, 1875) are paraphyletic. Nine morphological traits (including body size and the male setose ‘sex patches’) show strong phylogenetic signal and can be used to differentiate between the two clades. One clade is mainly restricted to Australia’s tropical north, whereas the other, larger clade has many species along the mesic east coast. Both clades have experienced multiple biome shifts, displaying a remarkable flexibility in habitat occupancy.
{"title":"Rhytiphora: a phylogenetic and morphological study of Australia’s largest longhorn beetle genus (Coleoptera: Cerambycidae)","authors":"Lauren G. Ashman, D. Hartley, M. Jin, David M. Rowell, L. Teasdale, A. Ślipiński, A. Zwick","doi":"10.1071/IS21071","DOIUrl":"https://doi.org/10.1071/IS21071","url":null,"abstract":"ABSTRACT Rhytiphora Audinet-Serville, 1835 is the most speciose longhorn beetle (Cerambycidae Latreille, 1802) genus in Australia, with ~200 species (from nearly 40 former genera, now synonymised into one) distributed across the entire continent. We used mitochondrial genome data from whole genome shotgun sequencing and COI barcoding of museum specimens to reconstruct the phylogeny of 68 Rhytiphora species, and analysed the morphological diversity and biogeographic history. We recovered a monophyletic Rhytiphora containing two distinct clades, within which all of the former genera (except Achriotypa Pascoe, 1875) are paraphyletic. Nine morphological traits (including body size and the male setose ‘sex patches’) show strong phylogenetic signal and can be used to differentiate between the two clades. One clade is mainly restricted to Australia’s tropical north, whereas the other, larger clade has many species along the mesic east coast. Both clades have experienced multiple biome shifts, displaying a remarkable flexibility in habitat occupancy.","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"36 1","pages":"493 - 505"},"PeriodicalIF":2.2,"publicationDate":"2022-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42582964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract. The genus Haloa includes dull-coloured species of haminoeid snails inhabiting tidal and shallow waters of the tropical and sub-tropical Indo-West Pacific. This paper reports on the diversity and systematics of Haloa based on the phylogenetic hypothesis generated by Oskars and Malaquias (2019) and on the morphological study of specimens. Shells, external features and anatomical characters from the jaws, radula, gizzard plates and male reproductive system were studied by optical and scanning electron microscopy. The molecular species delimitation method Automatic Barcode Gap Discovery, using DNA sequences of the cytochrome c oxidase subunit I gene, was implemented to aid delimiting candidate species. Thirteen species were recognised as valid, including two new to science, namely Haloa cobbi, sp. nov. and Haloa eora, sp. nov., and one unnamed species herein referred to as Haloa sp. 1. Species depict intraspecific variability in their colouration and little character displacement in their anatomy. Shells are of limited taxonomic use; only details of the male reproductive system (e.g. fundus) and the DNA were truly diagnostic. Three species have an Indo-West Pacific distribution and three are restricted to the Indian Ocean. The remaining seven species occur in the Western and Central Pacific Ocean, three of them having geographical ranges restricted to offshore islands.
{"title":"Systematic revision of the Indo-West Pacific bubble-snails of the genus Haloa (Pilsbry, 1921) (Cephalaspidea : Haminoeidae)","authors":"Trond R. Oskars, M. A. Malaquias","doi":"10.1071/IS21011","DOIUrl":"https://doi.org/10.1071/IS21011","url":null,"abstract":"Abstract. The genus Haloa includes dull-coloured species of haminoeid snails inhabiting tidal and shallow waters of the tropical and sub-tropical Indo-West Pacific. This paper reports on the diversity and systematics of Haloa based on the phylogenetic hypothesis generated by Oskars and Malaquias (2019) and on the morphological study of specimens. Shells, external features and anatomical characters from the jaws, radula, gizzard plates and male reproductive system were studied by optical and scanning electron microscopy. The molecular species delimitation method Automatic Barcode Gap Discovery, using DNA sequences of the cytochrome c oxidase subunit I gene, was implemented to aid delimiting candidate species. Thirteen species were recognised as valid, including two new to science, namely Haloa cobbi, sp. nov. and Haloa eora, sp. nov., and one unnamed species herein referred to as Haloa sp. 1. Species depict intraspecific variability in their colouration and little character displacement in their anatomy. Shells are of limited taxonomic use; only details of the male reproductive system (e.g. fundus) and the DNA were truly diagnostic. Three species have an Indo-West Pacific distribution and three are restricted to the Indian Ocean. The remaining seven species occur in the Western and Central Pacific Ocean, three of them having geographical ranges restricted to offshore islands.","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"36 1","pages":"436 - 492"},"PeriodicalIF":2.2,"publicationDate":"2022-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46418658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract. Extensive sampling around Martinique during the Muséum National d’Histoire Naturelle ‘Madibenthos’ expedition in 2016 resulted in a collection of hundreds of alpheid shrimps, of which 21 distinct species of Synalpheus Spence Bate, 1888 are studied herein. Combining results of a morphological analysis, a phylogenetic tree (combined 16S and COI) and species delimitation analyses (ABGD and PTP) indicates three species as new to science. These species are S. chaki sp. nov., S. corbariae sp. nov., and S. macdonaldi sp. nov. The first two new species belong to the S. rathbunae Coutière, 1909 species group, whereas the third new species broadly groups with the S. gambarelloides group. Additionally, 13 new country records of Synalpheus are reported for Martinique.
摘要2016年，在国家自然历史博物馆（Muséum National d'Historyire Naturelle‘Madibenthos）的探险中，在马提尼克岛周围进行了广泛的采样，收集了数百只阿尔卑斯海虾，其中研究了1888年Synalpheus Spence Bate的21个不同物种。结合形态学分析、系统发育树（结合16S和COI）和物种划界分析（ABGD和PTP）的结果，表明三个物种是新的科学物种。这些物种是S.chaki sp.nov.、S.corbariae sp.nov..和S.macdonaldi sp.nov。前两个新物种属于S.rathbunae Coutière，1909物种群，而第三个新物种与S.gambarelloides群体广泛分组。此外，马提尼克岛还报告了13项新的Synalpheus国家记录。
{"title":"Integrative methods resolve taxonomy and relationships of snapping shrimps in the genus Synalpheus (Decapoda: Alpheidae) collected during the MNHN ‘Madibenthos’ expedition","authors":"H. Ashrafi, K. Hultgren","doi":"10.1071/is21057","DOIUrl":"https://doi.org/10.1071/is21057","url":null,"abstract":"Abstract. Extensive sampling around Martinique during the Muséum National d’Histoire Naturelle ‘Madibenthos’ expedition in 2016 resulted in a collection of hundreds of alpheid shrimps, of which 21 distinct species of Synalpheus Spence Bate, 1888 are studied herein. Combining results of a morphological analysis, a phylogenetic tree (combined 16S and COI) and species delimitation analyses (ABGD and PTP) indicates three species as new to science. These species are S. chaki sp. nov., S. corbariae sp. nov., and S. macdonaldi sp. nov. The first two new species belong to the S. rathbunae Coutière, 1909 species group, whereas the third new species broadly groups with the S. gambarelloides group. Additionally, 13 new country records of Synalpheus are reported for Martinique.","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"36 1","pages":"389 - 418"},"PeriodicalIF":2.2,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45227969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Paige J. Maroni, B. Baker, A. Moran, H. Woods, C. Ávila, G. Johnstone, J. Stark, K. Kocot, S. Lockhart, T. Saucède, G. Rouse, N. Wilson
Abstract. The Antarctic marine environment, although rich in life, is predicted to experience rapid and significant effects from climate change. Despite a revolution in the approaches used to document biodiversity, less than one percent of Antarctic marine invertebrates are represented by DNA barcodes and we are at risk of losing biodiversity before discovery. The ease of sequencing mitochondrial DNA barcodes has promoted this relatively ‘universal’ species identification system across most metazoan phyla and barcode datasets are currently readily used for exploring questions of species-level taxonomy. Here we present the most well-sampled phylogeny of the direct-developing, Southern Ocean nudibranch mollusc, Doris kerguelenensis to date. This study sampled over 1000 new Doris kerguelenensis specimens spanning the Southern Ocean and sequenced the mitochondrial COI gene. Results of a maximum likelihood phylogeny and multiple subsequent species delimitation analyses identified 27 new species in this complex (now 59 in total). Using rarefaction techniques, we infer more species are yet to be discovered. Some species were only collected from southern South America or the sub-Antarctic islands, while at least four species were found spanning the Polar Front. This is contrary to dispersal predictions for species without a larval stage such as Doris kerguelenensis. Our work demonstrates the value of increasing geographic scope in sampling and highlights what could be lost given the current global biodiversity crisis.
{"title":"One Antarctic slug to confuse them all: the underestimated diversity of Doris kerguelenensis","authors":"Paige J. Maroni, B. Baker, A. Moran, H. Woods, C. Ávila, G. Johnstone, J. Stark, K. Kocot, S. Lockhart, T. Saucède, G. Rouse, N. Wilson","doi":"10.1071/IS21073","DOIUrl":"https://doi.org/10.1071/IS21073","url":null,"abstract":"Abstract. The Antarctic marine environment, although rich in life, is predicted to experience rapid and significant effects from climate change. Despite a revolution in the approaches used to document biodiversity, less than one percent of Antarctic marine invertebrates are represented by DNA barcodes and we are at risk of losing biodiversity before discovery. The ease of sequencing mitochondrial DNA barcodes has promoted this relatively ‘universal’ species identification system across most metazoan phyla and barcode datasets are currently readily used for exploring questions of species-level taxonomy. Here we present the most well-sampled phylogeny of the direct-developing, Southern Ocean nudibranch mollusc, Doris kerguelenensis to date. This study sampled over 1000 new Doris kerguelenensis specimens spanning the Southern Ocean and sequenced the mitochondrial COI gene. Results of a maximum likelihood phylogeny and multiple subsequent species delimitation analyses identified 27 new species in this complex (now 59 in total). Using rarefaction techniques, we infer more species are yet to be discovered. Some species were only collected from southern South America or the sub-Antarctic islands, while at least four species were found spanning the Polar Front. This is contrary to dispersal predictions for species without a larval stage such as Doris kerguelenensis. Our work demonstrates the value of increasing geographic scope in sampling and highlights what could be lost given the current global biodiversity crisis.","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"36 1","pages":"419 - 435"},"PeriodicalIF":2.2,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49458483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Boyer, Shannon R. Dohr, Madison S. Tuffield, Yoonjin Shu, Ciara D. Moore, Katherine M. Hahn, Rainah S. Ward, P. Nguyen, R. Morisawa
Abstract. New Zealand is home to 30 recognised endemic mite harvestman species and subspecies, 26 of which were described by Ray Forster in 1948 and 1952. These species comprise three genera: Rakaia Hirst, 1926, Neopurcellia Forster, 1948, and Aoraki Boyer & Giribet, 2007. Here, we focus on the diversity and distribution of Aoraki: we describe A. grandis Boyer, Tuffield & Dohr, sp. nov. and A. meridialis Boyer, Hahn & Ward, sp. nov. and we synonymise A. granulosa (Forster, 1952) with A. tumidata (Forster, 1948), bringing the total of named species and subspecies to twelve, and extending the southern range of the genus by over 100 km. Our phylogenetic analysis revealed three major lineages within the genus characterised by differing levels of granulation of the male fourth tarsus. We report striking variation in the range size and level of genetic structuring present within currently recognised species and subspecies of Aoraki, and propose future studies to address evolutionary, biogeographic and taxonomic questions in the group. urn:lsid:zoobank.org:pub:BDD4D61C-B099–44D5–949C-34AD217A016F.
{"title":"Diversity and distribution of the New Zealand endemic mite harvestman genus Aoraki (Arachnida, Opiliones, Cyphophthalmi, Pettalidae), with the description of two new species","authors":"S. Boyer, Shannon R. Dohr, Madison S. Tuffield, Yoonjin Shu, Ciara D. Moore, Katherine M. Hahn, Rainah S. Ward, P. Nguyen, R. Morisawa","doi":"10.1071/IS21044","DOIUrl":"https://doi.org/10.1071/IS21044","url":null,"abstract":"Abstract. New Zealand is home to 30 recognised endemic mite harvestman species and subspecies, 26 of which were described by Ray Forster in 1948 and 1952. These species comprise three genera: Rakaia Hirst, 1926, Neopurcellia Forster, 1948, and Aoraki Boyer & Giribet, 2007. Here, we focus on the diversity and distribution of Aoraki: we describe A. grandis Boyer, Tuffield & Dohr, sp. nov. and A. meridialis Boyer, Hahn & Ward, sp. nov. and we synonymise A. granulosa (Forster, 1952) with A. tumidata (Forster, 1948), bringing the total of named species and subspecies to twelve, and extending the southern range of the genus by over 100 km. Our phylogenetic analysis revealed three major lineages within the genus characterised by differing levels of granulation of the male fourth tarsus. We report striking variation in the range size and level of genetic structuring present within currently recognised species and subspecies of Aoraki, and propose future studies to address evolutionary, biogeographic and taxonomic questions in the group. urn:lsid:zoobank.org:pub:BDD4D61C-B099–44D5–949C-34AD217A016F.","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"36 1","pages":"372 - 387"},"PeriodicalIF":2.2,"publicationDate":"2022-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44262460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract. The integration of multiple lines of evidence in the delimitation of taxa is becoming the gold standard in modern taxonomy and systematics. However, multi-layered taxonomy is still incipient when it comes to species description within a mega-diverse group of organisms (e.g. arthropods), especially those inhabiting secluded environments such as caves. This may represent a significant shortcoming, because species in subterranean habitats generally show deep convergence in their somatic traits, perplexing our ability to delimit species by traditional approaches. The genus Troglohyphantes Joseph, 1882 (Araneae: Linyphiidae) is presently known to include 129 species and 5 subspecies, all of which are primarily distributed in subterranean habitats of the European mountain ranges. Recent studies on Italian alpine species covered taxonomy and faunistic, biogeography and ecology. However, our knowledge about the actual species diversity of Troglohyphantes spiders is far from complete, and it is expected that significant levels of overlooked diversity might exist within the genus. In this work, we combined morphological data with target gene molecular data, functional trait analysis and thermal physiology to explore overlooked diversity in Troglohyphantes vignai auct., a species of subterranean spider in the Western Italian Alps with an apparently broader distribution than its congeners. Our approach proved effective in uncovering overlooked diversity and further supporting the split of T. vignai auct. into three distinct species whose distribution ranges how striking resemblances with that of other subterranean spiders. We here describe the new species and discuss their origins in light of their geographical vicariance, niche convergence, thermal ecology and divergence time.
{"title":"A multi-layered approach uncovers overlooked taxonomic and physiological diversity in Alpine subterranean spiders (Araneae: Linyphiidae: Troglohyphantes)","authors":"M. Isaia, M. Arnedo, S. Mammola","doi":"10.1071/IS21054","DOIUrl":"https://doi.org/10.1071/IS21054","url":null,"abstract":"Abstract. The integration of multiple lines of evidence in the delimitation of taxa is becoming the gold standard in modern taxonomy and systematics. However, multi-layered taxonomy is still incipient when it comes to species description within a mega-diverse group of organisms (e.g. arthropods), especially those inhabiting secluded environments such as caves. This may represent a significant shortcoming, because species in subterranean habitats generally show deep convergence in their somatic traits, perplexing our ability to delimit species by traditional approaches. The genus Troglohyphantes Joseph, 1882 (Araneae: Linyphiidae) is presently known to include 129 species and 5 subspecies, all of which are primarily distributed in subterranean habitats of the European mountain ranges. Recent studies on Italian alpine species covered taxonomy and faunistic, biogeography and ecology. However, our knowledge about the actual species diversity of Troglohyphantes spiders is far from complete, and it is expected that significant levels of overlooked diversity might exist within the genus. In this work, we combined morphological data with target gene molecular data, functional trait analysis and thermal physiology to explore overlooked diversity in Troglohyphantes vignai auct., a species of subterranean spider in the Western Italian Alps with an apparently broader distribution than its congeners. Our approach proved effective in uncovering overlooked diversity and further supporting the split of T. vignai auct. into three distinct species whose distribution ranges how striking resemblances with that of other subterranean spiders. We here describe the new species and discuss their origins in light of their geographical vicariance, niche convergence, thermal ecology and divergence time.","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"36 1","pages":"354 - 371"},"PeriodicalIF":2.2,"publicationDate":"2022-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47419842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Bradford, R. Ruta, S. Cooper, M. L. Libonatti, C. Watts
Abstract. The Scirtidae Fleming, 1821 has been identified as one of the earliest diverging groups of Polyphagan beetles and is particularly speciose in Australia. However, very little is known about the origin of the Australian scirtids and there is a need for a robust, well-supported phylogeny to guide the genus and species descriptions and understand the relationships among taxa. In this study we carried out a phylogenetic analysis of the Australian Scirtinae Fleming, 1821, using DNA sequence data from ultraconserved elements (UCEs) and included representative taxa from New Zealand, New Caledonia, South America, South Africa and Eurasia in the analysis. Bayesian analyses of a concatenated dataset from 79 taxa recovered four major Southern Hemisphere groupings and two Australian–Eurasian groupings. The Veronatus group mainly consisted of genera from New Zealand, with the three Australian representatives only distantly related to each other. Relaxed molecular clock analyses, using the estimated age of the crown node of the Polyphaga for calibration, support a Gondwanan history for four of the groups of Australian Scirtinae and a northern origin for two groups. Our results highlight the value of commercially available UCEs for resolving the phylogenetic history of ancient groups of Coleoptera.
{"title":"Evolutionary history of the Australasian Scirtinae (Scirtidae; Coleoptera) inferred from ultraconserved elements","authors":"T. Bradford, R. Ruta, S. Cooper, M. L. Libonatti, C. Watts","doi":"10.1071/IS21053","DOIUrl":"https://doi.org/10.1071/IS21053","url":null,"abstract":"Abstract. The Scirtidae Fleming, 1821 has been identified as one of the earliest diverging groups of Polyphagan beetles and is particularly speciose in Australia. However, very little is known about the origin of the Australian scirtids and there is a need for a robust, well-supported phylogeny to guide the genus and species descriptions and understand the relationships among taxa. In this study we carried out a phylogenetic analysis of the Australian Scirtinae Fleming, 1821, using DNA sequence data from ultraconserved elements (UCEs) and included representative taxa from New Zealand, New Caledonia, South America, South Africa and Eurasia in the analysis. Bayesian analyses of a concatenated dataset from 79 taxa recovered four major Southern Hemisphere groupings and two Australian–Eurasian groupings. The Veronatus group mainly consisted of genera from New Zealand, with the three Australian representatives only distantly related to each other. Relaxed molecular clock analyses, using the estimated age of the crown node of the Polyphaga for calibration, support a Gondwanan history for four of the groups of Australian Scirtinae and a northern origin for two groups. Our results highlight the value of commercially available UCEs for resolving the phylogenetic history of ancient groups of Coleoptera.","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"36 1","pages":"291 - 305"},"PeriodicalIF":2.2,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49288485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mariana Griotti, Cristian J. Grismado, S. Roig-Juñent, M. Ramírez
Abstract. The systematics of Philodromidae is far from complete, especially for the Neotropical genera. Among these, Petrichus Simon, 1886 is a poorly known genus restricted to arid and semi-arid environments of South America. In this work, we performed a total-evidence analysis to assess the phylogenetic relationships of Petrichus and revised the taxonomy. Petrichus is monophyletic and closer to Titanebo and the New World Ebo. Within Petrichus, two clades are obtained: the Eremean Clade, containing five species displaying a Neotropical distribution; and the Patagonian Clade, with the seven species inhabiting southern South America. Our results also support a previous hypothesis on the phylogenetic relationships within Philodromidae. Thanatini is monophyletic and includes Fageia and Berlandiella, although this is not statistically supported, whereas Philodromini emerges as paraphyletic. We propose Philodromini be expanded to contain all genera having eyes on tubercles analysed in this work plus the closely related Halodromus, whereas the circumscription of Thanatini should await future phylogenetic analyses with new evidence. As for taxonomic proposals, we synonymise Bacillocnemis Mello-Leitão, 1938 with Petrichus, Petrichus ornatus Schiapelli & Gerschman, 1942 and P. luteus (Nicolet, 1849) with P. junior (Nicolet, 1849), P. lancearius Simon, 1905 with P. tullgreni Simon, 1902; we transfer P. corticinus Mello-Leitão, 1944 to Misumenoides Pickard-Cambridge, 1900 (Thomisidae); and P. fuliginosus (Nicolet, 1849), P. cinereus Tullgren, 1901, P. sordidus Tullgren, 1901 and P. zonatus Tullgren, 1901 are regarded as nomina dubia. In total, 13 species are recognised for the genus, of which four are new (described by Griotti & Grismado): P. spira, from western Argentina, P. patagoniensis, from south-western Argentina, P. roigjunenti, from Argentina and Chile and P. eremicus, from north-central Chile. ZooBank: http://zoobank.org/References/1220255e-6431-45c2-adfe-ed58d1f89b17
{"title":"Taxonomy and phylogenetic analysis of the South American genus Petrichus Simon (Araneae: Philodromidae) provide new insights into the running crab spiders’ phylogeny","authors":"Mariana Griotti, Cristian J. Grismado, S. Roig-Juñent, M. Ramírez","doi":"10.1071/IS21068","DOIUrl":"https://doi.org/10.1071/IS21068","url":null,"abstract":"Abstract. The systematics of Philodromidae is far from complete, especially for the Neotropical genera. Among these, Petrichus Simon, 1886 is a poorly known genus restricted to arid and semi-arid environments of South America. In this work, we performed a total-evidence analysis to assess the phylogenetic relationships of Petrichus and revised the taxonomy. Petrichus is monophyletic and closer to Titanebo and the New World Ebo. Within Petrichus, two clades are obtained: the Eremean Clade, containing five species displaying a Neotropical distribution; and the Patagonian Clade, with the seven species inhabiting southern South America. Our results also support a previous hypothesis on the phylogenetic relationships within Philodromidae. Thanatini is monophyletic and includes Fageia and Berlandiella, although this is not statistically supported, whereas Philodromini emerges as paraphyletic. We propose Philodromini be expanded to contain all genera having eyes on tubercles analysed in this work plus the closely related Halodromus, whereas the circumscription of Thanatini should await future phylogenetic analyses with new evidence. As for taxonomic proposals, we synonymise Bacillocnemis Mello-Leitão, 1938 with Petrichus, Petrichus ornatus Schiapelli & Gerschman, 1942 and P. luteus (Nicolet, 1849) with P. junior (Nicolet, 1849), P. lancearius Simon, 1905 with P. tullgreni Simon, 1902; we transfer P. corticinus Mello-Leitão, 1944 to Misumenoides Pickard-Cambridge, 1900 (Thomisidae); and P. fuliginosus (Nicolet, 1849), P. cinereus Tullgren, 1901, P. sordidus Tullgren, 1901 and P. zonatus Tullgren, 1901 are regarded as nomina dubia. In total, 13 species are recognised for the genus, of which four are new (described by Griotti & Grismado): P. spira, from western Argentina, P. patagoniensis, from south-western Argentina, P. roigjunenti, from Argentina and Chile and P. eremicus, from north-central Chile. ZooBank: http://zoobank.org/References/1220255e-6431-45c2-adfe-ed58d1f89b17","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"36 1","pages":"306 - 353"},"PeriodicalIF":2.2,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46699315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Parin Jirapatrasilp, Chih-Wei Huang, C. Hwang, C. Sutcharit, Chi-Tse Lee
Abstract East Asian terrestrial snails of the family Camaenidae Pilsbry, 1895a are diverse in terms of genus and species numbers, shell morphology and mode of living. This family also includes colourful conical arboreal snails that traditionally have been assigned to the genus Amphidromus Albers, 1850. Yet, the present study shows that, despite their deceiving conchological similarity, some of these East Asian arboreal snails do not belong to the genus Amphidromus or the subfamily Camaeninae Pilsbry, 1895a. The presence of a dart complex comprising a mucous gland, a dart sac, an accessory sac and a proximal accessory sac, along with a pronounced penial caecum and molecular phylogenetic analyses revealed that former ‘Amphidromus’ dautzenbergi, ‘A.’ roemeri and ‘Camaena’ mirifica, and one additional new species belong to Aegistohadra Wu, 2004 (subfamily Bradybaeninae Pilsbry, 1934). Aegistohadra dautzenbergi, comb. nov. and Aegistohadra roemeri, comb. nov. are conical with colourful spiral bands, whereas Aegistohadra mirifica, comb. nov. and Aegistohadra zhangdanae, sp. nov. are heliciform to conical with colourful, variegated spiral and transverse banding patterns. DNA sequence analyses also revealed that each variety of Aegistohadra dautzenbergi could not be differentiated by mitochondrial (cytochrome c oxidase subunit I and 16S rRNA) gene fragments. The phylogenetic position of Aegistohadra within the East Asian camaenids revealed that the similar appearance in shell morphology, microhabitat use and diet to arboreal snails in the genus Amphidromus is homoplastic. Moreover, the presence or absence of a dart complex is also homoplastic and is unsuitable for suprageneric classification. By contrast, the presence of a flagellum and a penial caecum is useful for the suprageneric classification.
{"title":"Convergent evolution of Amphidromus-like colourful arboreal snails and phylogenetic relationship of East Asian camaenids, with description of a new Aegistohadra species (Helicoidei: Camaenidae: Bradybaeninae)","authors":"Parin Jirapatrasilp, Chih-Wei Huang, C. Hwang, C. Sutcharit, Chi-Tse Lee","doi":"10.1071/IS21015","DOIUrl":"https://doi.org/10.1071/IS21015","url":null,"abstract":"Abstract East Asian terrestrial snails of the family Camaenidae Pilsbry, 1895a are diverse in terms of genus and species numbers, shell morphology and mode of living. This family also includes colourful conical arboreal snails that traditionally have been assigned to the genus Amphidromus Albers, 1850. Yet, the present study shows that, despite their deceiving conchological similarity, some of these East Asian arboreal snails do not belong to the genus Amphidromus or the subfamily Camaeninae Pilsbry, 1895a. The presence of a dart complex comprising a mucous gland, a dart sac, an accessory sac and a proximal accessory sac, along with a pronounced penial caecum and molecular phylogenetic analyses revealed that former ‘Amphidromus’ dautzenbergi, ‘A.’ roemeri and ‘Camaena’ mirifica, and one additional new species belong to Aegistohadra Wu, 2004 (subfamily Bradybaeninae Pilsbry, 1934). Aegistohadra dautzenbergi, comb. nov. and Aegistohadra roemeri, comb. nov. are conical with colourful spiral bands, whereas Aegistohadra mirifica, comb. nov. and Aegistohadra zhangdanae, sp. nov. are heliciform to conical with colourful, variegated spiral and transverse banding patterns. DNA sequence analyses also revealed that each variety of Aegistohadra dautzenbergi could not be differentiated by mitochondrial (cytochrome c oxidase subunit I and 16S rRNA) gene fragments. The phylogenetic position of Aegistohadra within the East Asian camaenids revealed that the similar appearance in shell morphology, microhabitat use and diet to arboreal snails in the genus Amphidromus is homoplastic. Moreover, the presence or absence of a dart complex is also homoplastic and is unsuitable for suprageneric classification. By contrast, the presence of a flagellum and a penial caecum is useful for the suprageneric classification.","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"36 1","pages":"244 - 290"},"PeriodicalIF":2.2,"publicationDate":"2022-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48113299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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