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Open research questions in Coleoptera Taxonomy and Distribution

54 unresolved questions extracted from the limitations and future-work sections of 485 Coleoptera Taxonomy and Distribution papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • The taxonomy of the genus Pachypus has been complicated by cryptic diversity and limited morphological differentiation. Previous studies have attempted to resolve the taxonomy using molecular traits, but with limited success.

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

  • The study identifies a knowledge gap regarding the community structure of ground beetles in the central Zagros region. 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

  • The complex topography and isolation of Bioko Island make it challenging to conduct taxonomic surveys. 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

  • Accurate species identification is challenging. Distributional gaps exist for many species. Taxonomic uncertainty can hinder conservation efforts.

    New Records of Macrosiagon bifasciata (Marseul, 1877) (Coleoptera: Ripiphoridae) from the Oriental Region · 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

  • Anthropogenic pressure. Global warming and associated secondary effects. The need for accurate species identification.

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

  • Morphological similarity of Anapleus species. Limited availability of specimens. Difficulty in distinguishing between species.

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

  • Morphological similarity between some phytoseiid mites. Limited availability of type material. Complexity of phytoseiid taxonomy.

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

  • 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

  • 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

  • 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 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 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 fills a gap in the knowledge of the region's diving beetle fauna. 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

  • The study is limited by the availability of historical data and museum collections. The species' rarity and sporadic occurrence make it difficult to gather data.

    Plusidia cheiranthi (Tauscher, 1809) a Kárpát-medencében (Lepidoptera: Noctuidae) · 2026 · DOI

  • Further targeted research is needed to better understand the species' distribution and ecology. The study highlights the importance of analyzing historical literary data and museum collections. Conservation efforts and targeted research on the species are necessary to protect its populations.

    Plusidia cheiranthi (Tauscher, 1809) a Kárpát-medencében (Lepidoptera: Noctuidae) · 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

  • 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

  • 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

  • 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

  • The taxonomy of Blaps remains problematic despite recent revisionary progress. There is a need for molecular species-delimitation methods to evaluate species boundaries and taxonomic hypotheses.

    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 paper identifies a gap in the understanding of the diversity of planthoppers in China. The paper also identifies a need for a checklist and key to the genera of the tribe Cedusini from China.

    Two new species and a new country record of Cedusini (Hemiptera, Fulgoromorpha, Derbidae) from China · 2026 · DOI

Most-cited papers in Coleoptera Taxonomy and Distribution

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54 open questions have been extracted from the limitations and future-work passages of 485 Coleoptera Taxonomy and Distribution papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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