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Invertebrate Systematics

Invertebrate Systematics

Invertebrate Systematics publishes significant contributions and reviews on the systematics, phylogeny and biogeography of all invertebrate taxa. Read more about the journalMore

Editor-in-Chief: Gonzalo Giribet

Publishing Model: Hybrid. Open Access options available.

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Latest

These articles are the latest published in the journal. Invertebrate Systematics is published under a continuous publication model. More information is available on our Continuous Publication page.

Published online 09 April 2025

IS24038_COCorrigendum to: Evolutionary history of Neotropical butterflies of the infratribe Neosatyriti based on target enrichment (Lepidoptera: Nymphalidae, Satyrinae, Satyrini, Pronophilina)

Tomasz W. Pyrcz, Oscar Mahecha-J., Dorota Lachowska-Cierlik, Pierre Boyer, André Victor Lucci Freitas, Klaudia Florczyk, Christer Fahraeus, José Cerdeña, Ezequiel Osvaldo Núñez-Bustos and Marianne Espeland
 

IS24038_CO Full Text  | IS24038_COPDF (657 KB)   Open Access Article

Published online 28 March 2025

IS24038Evolutionary history of Neotropical butterflies of the infratribe Neosatyriti based on target enrichment (Lepidoptera: Nymphalidae, Satyrinae, Satyrini, Pronophilina)

Tomasz W. Pyrcz, Oscar Mahecha-J. 0000-0002-8682-0020, Dorota Lachowska-Cierlik 0000-0001-9072-1677, Pierre Boyer 0009-0007-9425-7905, André Victor Lucci Freitas 0000-0002-5763-4990, Klaudia Florczyk 0000-0002-5731-8605, Christer Fahraeus 0000-0002-2990-3161, José Cerdeña, Ezequiel Osvaldo Núñez-Bustos and Marianne Espeland 0000-0002-6800-4783
 

Typical South American habitats and adult representatives of the three main clades of Neosatyriti butterflies

The infra tribe Neosatyriti is the most diverse butterfly group in South America's temperate rainforests and grasslands, with 57 species from Patagonia to northern Peru, up to 5000 m above sea level. Their systematics and evolutionary history remain unclear. We confirm a common ancestor and trace their spread across the continent using molecular, morphological and ecological data. They diversified in Chile (c. 12–11 Ma), reached Brazil (c. 6–5 Ma), and the Andes and Patagonia (c. 3 Ma), coinciding with temperate grassland evolution. (Photographs by P. Boyer and T. W. Pyrcz.)

IS24038 Abstract  |  IS24038 Full Text  | IS24038PDF (15.2 MB)  | IS24038Corrigendum (657 KB)  | IS24038Supplementary Material (388 KB)   Open Access Article

Published online 06 March 2025

IS24099Diversity, phylogeny and distribution of the subtribe Cristariina (Bivalvia: Unionidae: Unioninae) from China, with description of a new genus and species

Ruiwen Wu 0000-0002-8936-6054, Lili Liu 0009-0009-1164-7735, Liping Zhang, Arthur E. Bogan 0000-0003-4042-7706, Dandong Jin, Xiongjun Liu and Xiaoping Wu
 

Photograph of 12 freshwater mussels

Freshwater mussels of the family Unionidae are a diverse and ecologically significant group in aquatic ecosystems. We sequenced the maternal mitochondrial genomes of eight putative species of the East Asian endemic subtribe Cristariina and, by integrating molecular data and morphological characteristics, described a new genus and species, Acudonta baitiaoensis, and one newly recorded species for China (Cristaria truncata). Integrative taxonomy revealed three new synonyms of Anemina arcaeformis and using mitochondrial phylogenomics we clarified the intergeneric relationships within the subtribe. (Image credit: Lili Liu.)

IS24099 Abstract  | PDF (7.6 MB) - $60.00   | IS24099Supplementary Material (411 KB)
Published online 27 February 2025

IS24089Addressing knowledge gaps in the systematics of temperate south-east Australian deep-sea Raphitomidae (Caenogastropoda: Conoidea): integrative taxonomy of species of less diverse and taxonomically problematic genera

Francesco Criscione 0000-0002-1996-2854 and Anders Hallan
 

Image showing the raphitomids studied herein, their phylogeny based on mitochondrial DNA, and their distribution

The conoidean family Raphitomidae is arguably among the most diverse deep-sea gastropod groups. We studied recently collected deep-water raphitomids from south-eastern Australia, generated combined genetic, shell, anatomy and distribution data, described three new species, and revised eight more across several raphitomid genera. Our results contribute to the understanding of the global distributional patterns of deep-sea raphitomid species, ranging from the very rare and possibly endemic to those exhibiting transoceanic ranges or occupying remarkably wide depth intervals. (Image credit: Francesco Criscione.)

IS24089 Abstract  | PDF (15.3 MB) - $60.00   | IS24089Supplementary Material (2 MB)
Published online 20 February 2025

IS24059A sea of worms: the striking cases of the European Perinereis cultrifera and P. rullieri (Annelida: Nereididae) species complexes, with description of 13 new species

Marcos A. L. Teixeira 0000-0002-2228-2673, Joachim Langeneck, Maël Grosse 0000-0002-0977-1376, Pedro E. Vieira, José Carlos Hernández, Bruno R. Sampieri, Panagiotis Kasapidis 0000-0002-1538-0320, Torkild Bakken 0000-0002-5188-7305, Susana Carvalho, Ascensão Ravara 0000-0002-1689-2985, Arne Nygren and Filipe O. Costa
 

Live photograph of a Perinereis cultrifera-like specimen.

Annelids are increasingly being found to comprise a substantial fraction of cryptic biodiversity. Perinereis cultrifera is commonly used as a model species, but the possibility of unreported and undescribed cryptic species may compromise the accuracy and interpretation of results. In this study, integrative taxonomy revealed overlooked morphological traits and 18 different European Perinereis lineages (13 of which are formally described) yielding new molecular and taxonomic data available to a range of efforts including metabarcoding, species identification, conservation and biomonitoring. (Image credit: Joachim Langeneck.)

IS24059 Abstract  | PDF (11.4 MB) - $60.00   | IS24059Supplementary Material (901 KB)
Published online 19 February 2025

IS24098New Asian pseudoscorpions improve the phylogenetic resolution of Garypinoidea (Pseudoscorpiones)

Zhizhong Gao, Feng Zhang and Mark S. Harvey 0000-0003-1482-0109
 

Dorsal view of the female of a new genus and species of pseudoscorpion, Absensus zhangi, from the Himalayan Plateau.

A recent molecular and morphological analysis of the pseudoscorpion family Garypinidae revealed three subfamilies, each with distinct morphological features. We add three new taxa to the molecular analysis that provides evidence for one of these subfamilies to be newly elevated to family level, Amblyolpiidae. We also describe a new genus, Absensus, from the Himalayan Plateau that can be attributed to Amblyolpiidae based on morphological criteria. (Photograph by Zhizhong Gao.)

IS24098 Abstract  |  IS24098 Full Text  | IS24098PDF (6.2 MB)   Open Access Article

Published online 18 February 2025

IS24078Integrative taxonomy of the cycad-associated weevils of the Tranes group, with a revision of Tranes Schoenherr, a key to all taxa and an assessment of host specificity in the group (Coleoptera: Curculionidae: Molytinae)

Yun Hsiao 0000-0003-2619-3296 and Rolf G. Oberprieler
 

Photographs showing adult diversity of cycad-pollinating weevils of the genus Tranes in Australia

This paper determines the taxonomic diversity and host specificities of the cycad-associated weevils of the Tranes group in Australia. We recognise 17 natural species in four genera by combining analysis of morphological characteristics and mitogenomic data. We describe six new species of Tranes and redescribe its four previously named species. We also provide a key to all genera and species of the Tranes group in Australia. (Image credit: Rolf G. Oberprieler, Kirke M. Fisher and Nicholas Fisher).

IS24078 Abstract  |  IS24078 Full Text  | IS24078PDF (32.7 MB)  | IS24078Supplementary Material (508 KB)   Open Access Article

Published online 10 February 2025

IS24091Integrative morphological, mitogenomic and phylogenetic analyses reveal new vent-dwelling scallop species

Yi-Tao Lin, Ying-Bei Peng, Chong Chen 0000-0002-5035-4021, Ting Xu and Jian-Wen Qiu 0000-0002-1541-9627
 

New deep-sea scallop, Delectopecten thermus sp. nov., and its phylogenetic placement in Pectinidae.

The diversity and phylogeny of deep-sea Delectopecten scallops are poorly known. We describe Delectopecten thermus sp. nov. from the Higashi–Ensei vent field through morphological, mitogenomic and phylogenetic analyses. Our findings indicate that Delectopecten is monophyletic representing an early diverging pectinid clade, with significant gene-order divergences in mitogenome, but asymbiotic with chemoautotrophs. These results enhance our understanding of the biodiversity of Delectopecten, clarify the phylogenetic relationships within the genus, and provide insights into the trophic patterns of deep-sea scallops. (Image credit: Yi-Tao Lin.)

IS24091 Abstract  | PDF (5.9 MB) - $60.00 
Published online 20 January 2025

IS24033Phylogenetic position of the subfamily Symphrasinae (Insecta: Neuroptera), its intergeneric relationships and evolution of the raptorial condition within Mantispoidea

Adrian Ardila-Camacho 0000-0002-3750-8671 and Atilano Contreras-Ramos 0000-0001-8044-1348
 

Phylogenetic relationships within Symphrasinae and between mantispoid subfamilies are poorly understood because of the evolutionary influence of raptorial feeding on morphology. The raptorial condition has been interpreted as a synapomorphy of Raptoneuroptera or a homoplasy of Berothidae and Rhachiberothidae. Phylogenetic affinities of Symphrasinae are investigated using 3 genes and 72 newly interpreted morphological characters. We found support for monophyly of Raptoneuroptera, with Rhachiberothidae and Mantispidae as sister groups, and Symphrasinae (Rhachiberothidae) comprising Anchieta as sister to Trichoscelia + Plega.

IS24033 Abstract  | PDF (9.4 MB) - $60.00   | IS24033Supplementary Material (120 KB)
Published online 08 January 2025

IS24068Molecular phylogeny and systematic revision of the Brazilian species of Mastigoproctus Pocock, 1894 (Arachnida: Uropygi: Mastigoproctinae)

Daniel Castro-Pereira 0000-0003-2955-8166 and Ricardo Pinto-da-Rocha
 

Dorsal habitus of a Brazilian uropygid, Amauromastigon maximus comb. nov.

The arachnid order Uropygi has never been subjected to phylogenetic research. We perform the first systematic revision and molecular phylogenetic analysis of Uropygi, focusing on the Brazilian genera Thelyphonellus and Mastigoproctus. Our study indicates that Mastigoproctus actually comprises two different genera: the revalidated genus Amauromastigon with a single species, and a new genus Heptatarsus with two species, increasing the number of Brazilian uropygid genera to three. Additionally, we identify ontogenetically variable morphological characters and caution their use in uropygid systematics. (Image credit: Daniel Castro-Pereira.)

IS24068 Abstract  | PDF (13.1 MB) - $60.00   | IS24068Supplementary Material (662 KB)
Published online 20 December 2024

IS24055Molecular phylogeny of the marine littoral Adota Casey (Coleoptera: Staphylinidae: Aleocharinae) and its implication for biogeographic patterns

Jeong-Hun Song, Jong-Keun Jung and Kee-Jeong Ahn 0000-0003-4880-0931
 

Image showing the bodies of six marine littoral Adota species.

Here, we present the results of the first phylogenetic and biogeographical analysis of the marine littoral Adota on the Pacific coasts of the Northern Hemisphere. The biogeographic patterns were compared with those of different lineages of aleocharine beetles with different microhabitats. Reconstructions of the ancestral areas suggest that the common ancestor of Adota occurred widely along the East Asian coasts. Both dispersal and vicariance were important in shaping the current distribution. (Image credit: Jong-Keun Jung and Kee-Jeong Ahn.)

IS24055 Abstract  | PDF (1.9 MB) - $60.00   | IS24055Supplementary Material (216 KB)
Published online 20 December 2024

IS24071Reappraising the species validity of Cuneopsis szechenyii comb. nov. (Neumayr, 1899) and revising the taxonomy of Middendorffinaia mongolica (Middendorff, 1851)

Kaiyu Hou, Liping Zhang, Lili Liu 0009-0009-1164-7735, Xiongjun Liu, Junli Jia and Ruiwen Wu 0000-0002-8936-6054
 

Freshwater unionid bivalves, with a new combination, second Chinese endemic species and new record for China.

The maternal mitochondrial genomes of Unio szechenyii, Cuneopsis kiangsiensis, Middendorffinaia mongolica and Pseudocuneopsis wuana are sequenced. The validity of Unio szechenyii, previously considered a synonym of Cuneopsis heudei, is supported by the integration of conchometry, soft-body anatomy and molecular evidence, and a recombination as Cuneopsis szechenyii comb. nov. is proposed. The intrageneric relationships within the genera Cuneopsis and Pseudocuneopsis are elucidated based on the mitochondrial phylogenomics. Middendorffinaia mongolica, a new record for China, is proposed for transfer from the tribe Middendorffinaiini to the tribe Unionini and classification under the subtribe Middendorffinaiina stat. rev. (Image credit: Ruiwen Wu.)

IS24071 Abstract  | PDF (2.5 MB) - $60.00   | IS24071Supplementary Material (343 KB)
Published online 09 December 2024

IS24001The subarctic ancient Lake El’gygytgyn harbours the world’s northernmost ‘limnostygon communityʼ and reshuffles crangonyctoid systematics (Crustacea, Amphipoda)

Denis Copilas-Ciocianu 0000-0002-6374-2365, Alexander Prokin, Evgeny Esin, Fedor Shkil, Dmitriy Zlenko, Grigorii Markevich and Dmitry Sidorov 0000-0003-2635-9129
 

Composite image showing two new stygomorphic amphipods, their phylogenetic position within the superfamily, and subarctic type locality

In this study we report two new stygomorphic amphipods, Palearcticarellus hyperboreus sp. nov. and Pseudocrangonyx elgygytgynicus sp. nov., from Lake El’gygytgyn in north-eastern Siberia. Molecular phylogenetic analyses confirm their affinity to Crangonyctidae and Pseudocrangonyctidae, respectively, and reveal that speciation preceded Pleistocene glaciations. Although adapted to subterranean life, these species are found exclusively in surface waters, highlighting Lake El’gygytgyn as a high latitude refugium for ancient pre-glacial fauna and expanding the known distribution of stygomorphic amphipods. (Image credit: Denis Copilaş-Ciocianu and Dmitry Sidorov.)

IS24001 Abstract  | PDF (10.8 MB) - $60.00   | IS24001Supplementary Material (658 KB)
Published online 28 November 2024

IS24058Systematics of cybaeid spiders endemic to the Japanese Archipelago, and their historical biogeographic implications (Araneae: Cybaeidae)

Yusuke Sugawara, Yoh Ihara, Naoki Koike, Hong-Yul Seo, Larisa A. Prozorova, Zhi-Sheng Zhang and Takafumi Nakano 0000-0001-6107-2188
 

Molecular phylogenetic relationships between Cybaeus and other cybaeid genera endemic to East Asia.

The epigean and subterranean spider genus Cybaeus is highly species rich in the Japanese Archipelago. The Japanese Cybaeus spiders are classified into ~100 species, but their phylogeny is unclear. We conducted molecular phylogenetic analyses and divergence time estimation based on 73 species and demonstrated that several Cybaeus species should be classified into other genera. Divergence dating suggested that the opening of the Sea of Japan c. 20 million years ago may have promoted diversification and speciation of Japanese cybaeids. (Image credit: Yoh Ihara and Takafumi Nakano.)

IS24058 Abstract  | PDF (3 MB) - $60.00   | IS24058Supplementary Material (491 KB)
Published online 11 November 2024

IS24044A molecular assessment of species boundaries and relationships in the Australian brine shrimp Parartemia (Anostraca: Parartemiidae)

Md Aminul Islam 0000-0003-3396-5792, Jennifer Chaplin, Angus D’Arcy Lawrie, Mahabubur Rahman and Adrian Pinder
 

Photograph of male (top) and female (bottom) Australian brine shrimp, Parartemia (P. informis).

The brine shrimp Parartemia is a diverse, salt-tolerant genus found in Australian salt lakes. Its current taxonomy is mainly based on morphological data. We used molecular data to investigate the number and relationships of Parartemia species and found two new morphospecies and three cryptic species. Although most species were valid, molecular divergence among and within some species was substantial. Our results confirm the species richness of the genus and our updated species list will aid in targeted conservation efforts. (Image credit: Md Aminul Islam.)

IS24044 Abstract  |  IS24044 Full Text  | IS24044PDF (4 MB)  | IS24044Supplementary Material (1.6 MB)   Open Access Article

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Collections

Myriapods and Onychophorans—their Systematics, Biogeography and Species Delimitation

Myriapoda and Onychophora constitute two clades of mostly soil-dwelling multi-legged panarthropods, once thought to form the clade Uniramia, but now genomic evidence strongly suggest that Onychophora is the sister group of Arthropoda, where myriapods are nested. The articles compiled in this Collection include several examples of the integrative work we publish in our journal, and we welcome further submissions of your best work on myriapods and onychophorans.

Last Updated: 19 Jun 2017

30 Years of Invertebrate Systematics

Invertebrate Systematics has focused on the publication of primary research and review articles on all aspects related to systematics of invertebrates, including taxonomic papers with a focus on evolution and ecology. To celebrate 30 years of publication of Invertebrate Systematics, this Collection contains some of our most highly cited papers.

Last Updated: 14 Dec 2016

Malacology

In this Collection, we present articles covering a diversity of taxa (Bivalvia, Cephalopoda, Gastropoda, Polyplacophora) and approaches (molecular, morphological – including morphometrics – and total evidence) to better understand molluscan diversification at different time-scales. These articles encompass research and species found globally, highlighting both the interdisciplinary and collaborative nature of the science published in Invertebrate Systematics.

Last Updated: 30 Jun 2016

Decapoda

Invertebrate Systematics has published many significant studies of the Decapoda, of which 12 are showcased in this Collection. Launched to coincide with the 8th International Crustacean Congress in Frankfurt, Germany (18-23 August 2014), this Collection spans molecular and morphological phylogenetic and revisionary taxonomic studies of crabs, crayfish, freshwater and marine shrimps.

Last Updated: 08 Aug 2014

Hymenoptera

Invertebrate Systematics has published many important studies on hymenopterans, 14 of which are showcased in this Collection. Launched to coincide with the 8th International Congress of Hymenopterists in Cusco, Peru (20-25 July 2014), this significant collection comprises molecular and morphological phylogenetic and taxonomic studies on a wide range of families.

Last Updated: 01 Jul 2014

Arachnology

This Collection, launched to coincide with the 19th International Congress of Arachnology in Taiwan in June 2013, comprises 12 important studies on arachnids from Invertebrate Systematics. Together, the publications in this Collection reveal key aspects of the systematics, biology and biogeography of these invertebrate animals.

Last Updated: 01 Jun 2013

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