Invertebrate Systematics最新文献

{"title":"Molecular phylogeny of the land snail family Euconulidae in Thailand and its position in the superfamily Trochomorphoidea (Stylommatophora: Limacoidei), with description of a new genus","authors":"Arthit Pholyotha, S. Panha, C. Sutcharit, Parin Jirapatrasilp, Teerapong Seesamut, T. Liew, P. Tongkerd","doi":"10.1071/IS23012","DOIUrl":"https://doi.org/10.1071/IS23012","url":null,"abstract":"ABSTRACT The Euconulidae is a globally distributed land snail family but there is no record of this family from Thailand. In this study, we describe a new genus, Siamoconus gen. nov., based on comparative studies of the shell characteristics, external morphology of animals, radula, genital and spermatophore structures, and molecular phylogeny. We performed phylogenetic analyses of two mitochondrial gene fragment (cytochrome c oxidase I, COI; and 16S rRNA) and one nuclear (28S rRNA) gene fragment to clarify the relationships with other euconulid genera and its position in the superfamily Trochomorphoidea. We also analysed shell morphometrics, male genitalia and mantle pigmentation of Siamoconus gen. nov., confirming the status of three new species with keeled shells (S. boreas sp. nov., S. coleus sp. nov. and S. geotrochoides sp. nov.) and one new species with a rounded shell (S. destitutus sp. nov.). These new species are restricted to limestone areas in northern and north-eastern Thailand. We also re-examined the status of other genera in the superfamily Trochomorphoidea based on shell features, body pigmentation, radula, genital anatomy, spermatophore morphology, and a phylogenetic analysis of all available trochomorphoidean DNA sequences. Our analysis suggests that the family Geotrochidae, previously synonymised with the Trochomorphidae, should be resurrected to represent the genus Geotrochus from Borneo, and this family is retrieved as the sister clade of the Dyakiidae. ZooBank: urn:lsid:zoobank.org:pub:C5205F4E-5DDE-42E6-A532-761CAFE099C3","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"37 1","pages":"571 - 605"},"PeriodicalIF":2.2,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47299473","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}

{"title":"Neolucia bollami Eastwood, Braby & Graham, sp. nov. (Lepidoptera: Lycaenidae): speciation of a new allochronic cryptic butterfly from south-western Western Australia","authors":"Rodney G. Eastwood, M. Braby, Matthew R. Williams","doi":"10.1071/IS23009","DOIUrl":"https://doi.org/10.1071/IS23009","url":null,"abstract":"ABSTRACT South-western Western Australia is a global biodiversity hotspot renowned for exceptional diversity of plants and animals. The evolutionary processes that have generated this high biodiversity are not always clear, particularly for invertebrates, yet the area supports a very large number of endemic species that have diversified in situ. We use an integrative taxonomic approach based on adult and immature morphology, ecology, behaviour and molecular data to investigate the taxonomic status of a sympatric but seasonally isolated form (Neolucia agricola occidens Waterhouse & Lyell, 1914 form ‘Julimar’) of the polyommatine butterfly Neolucia agricola (Westwood, 1851) in south-western Western Australia. Our molecular dataset comprised 112 samples representing all Neolucia Waterhouse & Turner, 1905 species (100 COI 5′ sequences, 658 bp, plus 12 COI 3′, tRNA Leu, COII and EF1-α sequences, 3303 bp). Maximum likelihood phylogenetic analysis of the combined dataset recovered form ‘Julimar’ and N. agricola as reciprocally monophyletic, with a mean uncorrected ‘p’ pairwise divergence of 5.77% for the ‘barcode’ region of COI. Based on this and other evidence we recognise form ‘Julimar’ as a new species, Neolucia bollami Eastwood, Braby & Graham, sp. nov., sister to N. agricola and endemic to south-western Western Australia. As a result of these findings, we evaluated the evolutionary history of the two Neolucia species in WA and the processes that may have contributed to the diversification in sympatry or allopatry. We conclude that the multiple effect traits associated with a host shift, including host fidelity and temporal divergence, played an important role in the diversification process and in maintaining the reproductive integrity of the nascent allochronic species. ZooBank: urn:lsid:zoobank.org:act:53D9AD14-9694-4B5E-889C-A8D533E7F57D","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"37 1","pages":"552 - 570"},"PeriodicalIF":2.2,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48065435","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}

{"title":"An unusual lineage of Helotidae in mid-Cretaceous amber from northern Myanmar (Coleoptera: Nitiduloidea)","authors":"Yan‐Da Li, Zhenhua Liu, Diying Huang, Chen-yang Cai","doi":"10.1071/IS23004","DOIUrl":"https://doi.org/10.1071/IS23004","url":null,"abstract":"ABSTRACT Helotidae is a small and morphologically uniform family in Nitiduloidea. In this study, we report an unusual form of helotids, represented by Lobatihelota lescheni Li, Liu & Cai gen. nov., sp. nov. and L. iridescens Li, Liu & Cai sp. nov. from mid-Cretaceous Burmese amber. Lobatihelota is unique within the family in having a leg morphology typical of some Nitidulidae and Kateretidae (tibia widened distally, tarsomeres 1–3 bilobed, tarsomere 4 shortened). Additionally, new diagnostic characters are suggested for Trihelota from the same deposit (prosternum and mesoventrite with paired carinae, metanepisterna short, metacoxae meeting elytra laterally), and the morphological divergence of representative genera of the superfamilies Erotyloidea, Nitiduloidea and Cucujoidea is visualised using a phylomorphospace approach. ZooBank: urn:lsid:zoobank.org:pub:FE0E4D6A-8157-4E14-9240-7B87F285AEA5","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"37 1","pages":"538 - 551"},"PeriodicalIF":2.2,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47727136","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}

{"title":"Rare yet everywhere: phylogenetic position of the enigmatic deep-sea shrimp Physetocaris microphthalma Chace, 1940 (Decapoda, Caridea)","authors":"Pedro A. Peres, H. Bracken-Grissom","doi":"10.1071/IS23024","DOIUrl":"https://doi.org/10.1071/IS23024","url":null,"abstract":"ABSTRACT The mysterious deep-sea shrimp Physetocaris microphthalma Chace, 1940 remains a challenge for the understanding of caridean shrimp systematics. Upon first description in 1940, the unique morphology in combination with lack of material made the allocation of P. microphthalma to any family or superfamily difficult, therefore the monotypic superfamily Physetocaridoidea and family Physetocarididae were described. The rarity of the species, only documented a few times in scientific literature, in combination with a circumglobal distribution, makes the advancement of the systematics and biology of this shrimp challenging. Current literature places Physetocaridoidea as a superfamily with a sister relationship to Pandaloidea but this relationship has never been tested using molecular data. Recent expeditions to the northern Gulf of Mexico and north-eastern Pacific Ocean provided fresh material for inclusion in phylogenetic analyses. Here, we used a molecular systematics approach to investigate the phylogenetic placement of this species within the infraorder Caridea and test for cryptic diversity across oceanic basins. We sequenced five genes (12S rRNA, 16S rRNA, H3, NaK and PEPCK) and built phylogenetic trees including specimens across Pandaloidea and other carideans (n = 75) using maximum-likelihood and Bayesian approaches. Our results strongly support the inclusion of P. microphthalma within the family Pandalidae and superfamily Pandaloidea, indicating that the superfamily Physetocaridoidea and family Physetocaridae are not valid. In addition, the inclusion of specimens from the Atlantic and Pacific Oceans does not support evidence of cryptic diversity, suggesting the global distribution of P. microphthalma. This is the first study to provide genetic data for this species, resulting in an updated classification for the infraorder Caridea and highlighting that deep-pelagic species can be rare yet still widely distributed.","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"37 1","pages":"529 - 537"},"PeriodicalIF":2.2,"publicationDate":"2023-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49632296","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}

{"title":"Resolving the taxonomy of the Antarctic feather star species complex Promachocrinus ‘kerguelensis’ (Echinodermata: Crinoidea)","authors":"Emily L. McLaughlin, N. Wilson, G. Rouse","doi":"10.1071/IS22057","DOIUrl":"https://doi.org/10.1071/IS22057","url":null,"abstract":"ABSTRACT An increasing number of Antarctic invertebrate taxa have been revealed as cryptic species complexes following DNA-based assessments. This ultimately necessitates a morphological reassessment to find traits that will help identify these cryptic or pseudocryptic species without the need for sequencing every individual. This work concerns comatulid crinoid echinoderms long considered to represent a single, circum-Antarctic species, Promachocrinus kerguelensis. The first molecular studies sought to distinguish the diversity in the complex and understand the constituent species distributions but stopped short of formal taxonomic assessment. Here, we continued to increase sample representation around the Southern Ocean and sequenced the mitochondrial COI gene for all new specimens, and additional genes for a few representatives. We also elucidated previously unappreciated features, particularly body pigmentation and morphology of the centrodorsal ossicle in an attempt to diagnose some species morphologically and based on DNA data. The species complex within Promachocrinus is here resolved into P. kerguelensis Carpenter, 1879, P. vanhoeffenianus Minckert, 1905, P. joubini Vaney, 1910, P. mawsoni (Clark, 1937) comb. nov. (transferred from Florometra) and four previously unnamed species, P. fragarius sp. nov., P. unruhi sp. nov., P. uskglassi sp. nov. and P. wattsorum sp. nov. Although most species can be distinguished morphologically, several cannot be reliably separated without DNA data. All sequenced species are essentially circum-Antarctic, with the notable exception of P. wattsorum sp. nov. that is restricted to the Prince Edward Islands in the sub-Antarctic Indian Ocean and P. vanhoeffenianus that is only known from the type locality in the Davis Sea. The vast nature of the Antarctic and Southern Ocean ecosystem dictates large scale sampling to understand the full extent of the biodiversity. ZooBank: urn:lsid:zoobank.org:pub:F871CDC8-973B-48CE-8A61-33658D4EB4B1","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"37 1","pages":"498 - 527"},"PeriodicalIF":2.2,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49607174","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}

{"title":"Systematics of the Ogyris aenone (Waterhouse, 1902) complex (Lepidoptera: Lycaenidae): threatened Australian butterflies of national conservation significance","authors":"E. Beaver, M. Braby, A. Mikheyev","doi":"10.1071/IS23003","DOIUrl":"https://doi.org/10.1071/IS23003","url":null,"abstract":"ABSTRACT The butterfly genus Ogyris Angas, 1847 consists of several striking but poorly resolved complexes endemic to Australia and New Guinea, many of which have an obligate association with ants. Here, we revise the systematics of the Ogyris aenone (Waterhouse, 1902) complex through an integrative taxonomic approach based on molecular phylogenetic analysis, morphological examination, life histories and ecology. Mitochondrial sequence data based on concatenated cytochrome oxidase I (COI) and cytochrome b (cytb) (total of 1203 bp) for 36 ingroup samples were generated and combined with sequences available on NCBI GenBank for Ogyris. Phylogenetic analysis inferred by maximum likelihood methods resolved five taxa within this group, with one taxon, Ogyris caelestia Beaver & Braby sp. nov., described as a new species and another, O. doddi stat. rev., raised to full species. Phylogenetic relationships among the five taxa are as follows: (O. caelestia + O. aenone) + (O. ianthis + (O. iphis + O. doddi)). This revision brings the number of recognised Ogyris species to 16 and for the tribe Ogyrini to 18. This group of butterflies was found to be scarce – field samples of host trees that had the co-occurrence of both mistletoe and the appropriate attendant ant at 12 locations in eastern and northern Australia revealed low rates of occupancy (<50%, with an overall average of 17%) based on the presence of immature stages of the five butterfly species. The complete life histories, general biology and ecology of all members of this species-group are illustrated and diagnosed for the first time and confusing aspects of the literature are clarified. Several taxa are of conservation significance, including the new species, and future directions are discussed in relation to this. ZooBank: urn:lsid:zoobank.org:pub:FC258ED6-AA1F-4E11-BFE1-D0A612E4F166","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"37 1","pages":"457 - 497"},"PeriodicalIF":2.2,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45218948","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}

{"title":"At the edge of the sea: the supralittoral nemertean, Acteonemertes orientalis sp. nov. (Nemertea: Eumonostilifera: Plectonemertidae) from Japan","authors":"Natsumi Hookabe, Y. Fujino, Naoto Jimi, R. Ueshima","doi":"10.1071/IS22066","DOIUrl":"https://doi.org/10.1071/IS22066","url":null,"abstract":"Abstract. Ribbon worms (phylum Nemertea) are found in oceans worldwide; however, only a few inhabit terrestrial, semiterrestrial and freshwater environments. In our study, we describe Acteonemertes orientalis sp. nov., a new species of Plectonemertidae Gibson, 1990 and the first plectonemertid discovered in Japan. The species was found in the supralittoral zone, from which nemerteans have rarely been reported and inhabits areas under rocks, wave-dissipating concrete blocks, and fallen leaves and stocks, along the coast of the Sea of Japan. Multi-locus phylogenetic analyses based on two mitochondrial (16S rRNA and cytochrome c oxidase subunit I) and two nuclear gene markers (18S rRNA and 28S rRNA) revealed that A. orientalis sp. nov. formed a clade with Leptonemertes cf. chalicophora collected from Florida. Although the external and internal morphology of A. orientalis sp. nov. is largely consistent with the generic diagnosis, this species differs in having a large proboscis. Based on the molecular and morphological data, we propose to amend the diagnosis of Acteonemertes by excluding proboscis size. ZooBank: urn:lsid:zoobank.org:pub:BBBE9549-5DCE-424F-9A39-930F8243C28B","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"37 1","pages":"444 - 456"},"PeriodicalIF":2.2,"publicationDate":"2023-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46069678","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}

{"title":"Systematic revision of the microcystid land snails endemic to Norfolk Island (Gastropoda: Stylommatophora) based on comparative morpho-anatomy and mitochondrial phylogenetics","authors":"I. Hyman, Jennifer Caiza, F. Köhler","doi":"10.1071/IS22049","DOIUrl":"https://doi.org/10.1071/IS22049","url":null,"abstract":"Abstract. Norfolk Island harbours a rich land snail diversity dominated by the Microcystidae and Helicarionidae that are currently represented by 10 endemic genera and 27 accepted species and subspecies. We comprehensively revise the taxonomy of these taxa using comparative morphology and phylogenetic analyses of the mitochondrial genes COI and 16S. We demonstrate that most ‘helicarionid’ species belong to Microcystidae with only a single species of Helicarionidae present (Dendrolamellaria mathewsi). The Norfolk Island microcystids comprise five major clades. These clades may have independently colonised the Norfolk Island group; however, clarity may only be achieved in a broader phylogenetic context that incorporates the study of extralimital groups. Three clades have radiated in situ into multiple endemic species. Based on our findings, we recognise the previously accepted genera Iredaleoconcha, Nancibella and Roybellia as junior synonyms of Allenoconcha, and Mathewsoconcha and Quintalia as junior synonyms of Advena, based on the close phylogenetic relationships. Furthermore, we confirm the previous treatment of Lutilodix, Parcolena and Dolapex as junior synonyms of Fanulena and Belloconcha as a synonym of Advena, bringing the total number of Norfolk Island microcystid genera to five. Secondly, we provide revised descriptions for each of these genera. Thirdly, we remove Allenoconcha belli, A. mathewsi, A. monspittensis, A. perdepressa and A. royana from the synonymy with Allenoconcha basispiralis. We also remove Helix patescens from synonymy with Quintalia flosculus, treating this as a member of Allenoconcha, and resurrect Advena campbellii nepeanensis and Quintalia stoddartii intermedia as accepted subspecies. Based on comparative morpho-anatomy, we treat Allenoconcha mathewsi and A. monspittensis as junior synonyms of Allenoconcha royana, A. inopina as a junior synonym of Allenoconcha caloraphe, Fanulena fraternus as a junior synonym of F. amiculus, Advena campbellii charon as a synonym of Advena campbellii campbellii, Mathewsoconcha belli, M. compacta and M. norfolkensis as junior synonyms of Advena suteri, M. elevata as a junior synonym of Advena grayi, and M. microstriatum as a junior synonym of Advena phillipii. Lastly, we describe three new species, Allenoconcha evansorum sp. nov., A. margaretae sp. nov. and A. varmani sp. nov. In summary, we accept 27 microcystid species and subspecies all of which are endemic to the Norfolk Island group. We provide recent and historical distribution data for each species and demonstrate that seven species or subspecies are probably extinct. All species are well differentiated in terms of basal branch lengths in the phylogenetic tree, but this distinction is not consistently reflected in the external morphology. Some closely related sister-taxa are very similar in shell morphology whereas others exhibit highly distinctive shells. We hypothesise that these stark differences in shell morphology may result","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"37 1","pages":"334 - 443"},"PeriodicalIF":2.2,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47760333","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}

{"title":"Four new Solenogastres (Mollusca, Aplacophora) from the South China Sea and paraphyly of Proneomeniidae Simroth, 1893","authors":"M. Cobo, Emily L. McLaughlin, K. Kocot","doi":"10.1071/IS22062","DOIUrl":"https://doi.org/10.1071/IS22062","url":null,"abstract":"Abstract. Solenogastres and Caudofoveata (Aplacophora) remain some of the least known molluscs, despite ubiquity in the marine environment and importance in understanding molluscan evolution. The use of new morphological techniques and development of DNA barcode libraries have helped make specimen identification easier. However, for solenogasters, using histology for identification and adequate description of species remains necessary in most cases. This, together with the facts that knowledge about solenogaster species distributions is biased and that most species were described from one or very few individuals, explains why many open questions about the actual distribution, intra- and interspecific variability, etc., remain. We performed an integrative taxonomic study of eight specimens of solenogasters from the South China Sea (West Pacific Ocean) thatresulted in the identification of four new species of Proneomeniidae. Species identification and description following the established diagnostic characters were straightforward. However, phylogenetic analysis of molecular data obtained from these specimens and other members of Proneomeniidae indicate that the family is polyphyletic. We recovered representatives of two other families, Epimeniidae (Epimenia) and Strophomeniidae (Anamenia), nested within Proneomeniidae with strong support. Ancestral character state reconstruction indicates that characters commonly used in solenogaster taxonomy, such as the radula and foregut glands, may be more evolutionarily labile in this group than previously known. Therefore our work fills knowledge gaps regarding the diversity and distribution of members of this family but raises important questions about solenogaster taxonomy and systematics that should be further assessed with additional markers and broader taxon sampling. ZooBank: urn:lsid:zoobank.org:pub:BCADACD6-9AD0-442A-AD64-031BA8D88599","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"37 1","pages":"301 - 333"},"PeriodicalIF":2.2,"publicationDate":"2023-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49105298","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}

{"title":"Taxonomy of Antarctic Buccinoidea (Gastropoda: Neogastropoda) revisited based on molecular data","authors":"Y. Kantor, T. Molodtsova, Sofia Zvonareva, A. Fedosov","doi":"10.1071/IS22064","DOIUrl":"https://doi.org/10.1071/IS22064","url":null,"abstract":"Abstract. The superfamily Buccinoidea is the most speciose group of Neogastropoda within the Antarctic Convergence, with ~70 species classified in 21 genera, but is still poorly represented in molecular phylogenies. The first molecular data on the group presented in the recent phylogeny of the Buccinoidea (Kantor et al. 2022) lacked many important lineages, thereby limiting inference of the relationships of Antarctic Buccinoidea. We revisited relationships of the Antarctic Buccinoidea, involving recently collected molecular-grade samples from the bathyal and abyssal depths of the Scotia Sea, the Weddel Sea and adjacent regions. Our data set includes 25 species (including six genera studied on a molecular basis for the first time), sequenced for five phylogenetic markers: the barcode fragment of cox1 gene, fragments of ribosomal 12S, 16S rRNA and 28S and nuclear H3 genes. Based on phylogenetic reconstructions, we synonymise the genus Lussitromina with Falsitromina and reassign the latter from Cominellidae to Prosiphonidae. We confirm the placement of four further genera, Drepanodontus, Germonea, Parabuccinum and Spikebuccinum in Prosiphonidae. We detect a previously unrecognised deep lineage of the family Prosiphonidae and describe this as the new genus Scotiabuccinum. The genus Parabuccinum, previously recorded in the Magellanic province and off the eastern coast of Argentina was reported for the first time within the Antarctic Convergence. We discover four previously unrecognised species of Antarctic Prosiphonidae and these are the first Buccinoidea from Antarctic waters described based on molecular data. According to our data, all but two species of Antarctic Buccinoidea belong to the family Prosiphonidae. Seven of the nineteen Recent Antarctic Prosiphonidae genera (36%) cross the boundaries of the Convergence and eight Antarctic genera are monotypic (42%). Currently no Buccinoidea species are known to occur both within and outside the Antarctic Convergence. ZooBank: urn:lsid:zoobank.org:pub:DEEA1599-C951-414E-9098-563EAD10BD57","PeriodicalId":54927,"journal":{"name":"Invertebrate Systematics","volume":"37 1","pages":"271 - 299"},"PeriodicalIF":2.2,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46033532","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}