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Open research questions in Coleoptera Taxonomy and Distribution

68 gap statements mined from Coleoptera Taxonomy and Distribution papers in our 4.5M-paper local library, which holds 586 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • The taxonomic status of the Maiella population previously attributed to P. biondii is unclear. The systematics of the genus Psylliodes is still not clear.

    Taxonomic revision of the Psylliodes picipes species group (Coleoptera: Chrysomelidae: Galerucinae) with description of a new species from Central Apennines · 2026 · DOI

  • The research highlights the need for a scientific basis for pinpointing high-priority conservation sites and evaluating the efficacy of conservation strategies.

    Ground beetle (Coleoptera: Carabidae) diversity in the central Zagros ecosystems: implications for the role of protected areas in biodiversity conservation · 2026 · DOI

  • The study faced challenges in identifying the new species due to the lack of data on the genus Pinopellis from China. The study required careful examination of the specimens to distinguish between the new species.

    Two new species and new records of the genus Pinopellis Assing, 2022 (Coleoptera, Staphylinidae, Paederinae) from China · 2026 · DOI

  • There is a lack of data on the genus Pinopellis from China. The study aims to fill this gap by providing new morphological, taxonomic, and faunistic data.

    Two new species and new records of the genus Pinopellis Assing, 2022 (Coleoptera, Staphylinidae, Paederinae) from China · 2026 · DOI

  • Further study of the genus Anapleus is needed. Exploration of the Oriental realm for new taxa. Continued collection and description of Anapleus species.

    Anapleus pescheli, a new endogean species from Italy and Greece with the key to Western Palaearctic species (Coleoptera, Histeridae, Dendrophilinae, Anapleini) · 2026 · DOI

  • The study provides new information on the female genitalia of Deronectes hakkariensis, which was previously unknown.

    Predaceous Diving Beetles (Coleoptera: Dytiscidae) of Elâzığ Province, Türkiye with Description of the Female of Deronectes hakkariensis Wewalka, 1989. · 2026 · DOI

  • The taxonomy of Zenithicola Spinola, 1841 is unclear. The species constitution of Zenithicola Spinola, 1841 needs to be reviewed.

    Australian Opilonini (Coleoptera: Cleridae: Clerinae) part II: description and taxonomy of Megaxestodes gen. nov. and introduction to an informal ‘Zenithicola-complex’ including taxonomic notes and new synonymies · 2026 · DOI

  • There is a lack of information on the diversity of Anthicidae in the Republic of Moldova. The study aims to fill this gap by providing a synthesis of bibliographic and taxonomic data on the Anthicidae family in the region.

    Coleoptera (insecta) of the family Anthicidae latreille, 1819 in the fauna of the Republic of Moldova · 2026 · DOI

  • The lack of comprehensive faunistic surveys on the island hinders the understanding of its biota.

    Three new species of Onthophagus Latreille, 1802 from Bioko Island, Equatorial Guinea, belonging to d’Orbigny’s group IX, with a taxonomic note on O. denudatus d’Orbigny, 1902 (Coleoptera: Scarabaeidae: Scarabaeinae: Onthophagini) · 2026 · DOI

  • Further taxonomic surveys are needed to fully understand the biota of Bioko Island. Studies on the biogeography of the Gulf of Guinea islands are necessary.

    Three new species of Onthophagus Latreille, 1802 from Bioko Island, Equatorial Guinea, belonging to d’Orbigny’s group IX, with a taxonomic note on O. denudatus d’Orbigny, 1902 (Coleoptera: Scarabaeidae: Scarabaeinae: Onthophagini) · 2026 · DOI

  • We hypothesize that this is because the COI gene contains limited genetic information and is insufficient for resolving species groups within the genus Meleonoma, necessitating the incorporation of additional genetic data.

    Two New Species of the Genus Meleonoma (Lepidoptera, Autostichidae) from China, Revealed by Morphological and Phylogenetic Evidence · 2026 · DOI

  • The genus Pelecotoides remains understudied and underrecorded. There is a lack of understanding of the biodiversity of Ripiphoridae species in Borneo.

    The first new species of Pelecotoides Laporte, 1833 (Coleoptera: Ripiphoridae) from the Greater Sunda Islands in a century · 2026 · DOI

  • Molecular species-delimitation methods may under-or overestimate species diversity. The taxonomy of Blaps is complex and problematic. There is a need for further research to fully understand the diversity of Blaps species in China.

    Description of two new species and larvae of three species of Blaps Fabricius, 1775 from China (Coleoptera, Tenebrionidae, Blaptinae), with molecular species delimitation · 2026 · DOI

  • There is a lack of understanding of the role of X. monographus in spreading blue-stain and wood-decaying fungi. The study aims to address this gap by examining the fungal assemblages associated with X. monographus. The study seeks to provide new insights into the ecological significance of X. monographus as a vector of fungi.

    Fungal assemblages associated with the ambrosia beetle Xyleborus monographus (Fabricius) on oak wood: potential role of the insect in spreading blue-stain and wood-decaying fungi · 2026 · DOI

  • The study highlights the need for further research on the impact of urbanization on biodiversity.

    Females and Males in Carabus granulatus L. (Coleoptera, Carabidae) Respond Differently to Urbanization · 2026 · DOI

  • The occurrence of new records from islands such as Bawean, Morotai, Obi, and Sebesi suggests that additional undocumented diversity is likely present in underexplored areas. Well-studied regions such as Java and parts of Sumatra show relatively comprehensive records, whereas many eastern islands remain poorly explored.

    Annotated catalogue of the tortoise beetles (Coleoptera: Chrysomelidae: Cassidinae) from Indonesia with additional faunistic data from Museum Zoologicum Bogoriense · 2026 · DOI

  • The taxonomic status of Austrelatus zimmermanni is unclear. There is a lack of data on the species ecology and distribution, as well as its biology and phenology.

    Austrelatus zimmermanni (Gschwendtner, 1934) comb. nov. (Coleoptera: Dytiscidae: Copelatinae) with two new subspecies from Japan, and notes on the species biology and ecology · 2026 · DOI

  • Other species-rich coleopteran families such as Curculionidae (weevils), Chrysomelidae (leaf beetles) and Staphylinidae (rove beetles) remain underinvestigated and thus require further surveys.

    Faunistic study of Coleoptera (Buprestidae, Carabidae, Cerambycidae, Lucanidae and Melyridae) on Gageodo Island, south-westernmost Korean Peninsula · 2025 · DOI

  • Plecoptera are considered particularly good ecological indicators and one of the most endangered groups of insects, but very limited information on their DNA barcodes is available in public databases.

    The InBIO Barcoding Initiative Database: contribution to the knowledge on DNA barcodes of Iberian Plecoptera · 2020 · DOI

  • While the peculiar biology of Pachypus had attracted attention of previous workers to assess their taxonomy14,15 and ecology11,12,44,45, its taxonomy has been poorly understood.

    Integrative taxonomy of cryptic Pachypus chafers using museomics, morphometrics, barcoding, and genomic DNA analysis (Coleoptera: Scarabaeidae: Pachypodinae) · 2026 · DOI

  • The study of fossil insects can be challenging due to the limited availability of specimens. The taxonomy of the genus Ptinus is complex and requires careful analysis.

    Two new species of spider beetles (Coleoptera: Anobiidae) from Danish and Rovno amber · 2026 · DOI

  • As is mentioned above, Casnonidea, Sora, and Statira are poorly defined morphologically on the one hand and species-rich on the another hand.

    Presence of the genus Sora Walker, 1859 (Coleoptera: Tenebrionidae: Lagriinae) in the Eocene fauna of Europe · 2026 · DOI

  • The study area is relatively little-known in terms of biodiversity. The taxonomy of Carabus Linnaeus, 1758 in Mongolia and North China is not well-studied.

    New taxa of Carabus Linnaeus, 1758 (Coleoptera Carabidae) from Mongolia and North China (Inner Mongolia Province) · 2023 · DOI

  • Further studies on the ecology and conservation of Chrysomeloidea in the region. Research on the impact of climate change on invertebrate biodiversity.

    Chrysomelidae, Megalopodidae and Orsodacnidae (Coleoptera: Chrysomeloidea) of the Republic of Mordovia (Russia): dataset description · 2026 · DOI

  • Further examination of type material and literature review to clarify the taxonomic status of other phytoseiid mites. Investigation of the morphological variation within Phytoseiidae.

    On the taxonomic status of the monotypic genus Collyerseius and five species, described by Denmark & Evans (2019) (Mesostigmata: Phytoseiidae) · 2026 · DOI

Most-cited papers in Coleoptera Taxonomy and Distribution

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Open questions raised by papers listed on this page include: (1) The taxonomic status of the Maiella population previously attributed to P. biondii is unclear (“Taxonomic revision of the Psylliodes picipes species group (Coleoptera:…”, 2026); (2) The study faced challenges in identifying the new species due to the lack of data on the genus Pinopellis from China (“Two new species and new records of the genus Pinopellis Assing, 2022…”, 2026); (3) There is a lack of information on the diversity of Anthicidae in the Republic of Moldova (“Coleoptera (insecta) of the family Anthicidae latreille, 1819 in the fauna of…”, 2026); (4) The lack of comprehensive faunistic surveys on the island hinders the understanding of its biota (“Three new species of Onthophagus Latreille, 1802 from Bioko Island, Equatorial…”, 2026); (5) The genus Pelecotoides remains understudied and underrecorded (“The first new species of Pelecotoides Laporte, 1833 (Coleoptera: Ripiphoridae)…”, 2026). 68 gap statements have been mined from Coleoptera Taxonomy and Distribution papers in our 4.5M-paper local library, which holds 586 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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