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  • 1
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    Dyscritulus europaeus sp. nov. (Hymenoptera, Braconidae, Aphidiinae): description of a new aphid parasitoid species with an identification key for species of the genus (2023)
    Pensoft Publishers
    In:  ZooKeys vol. 1175, pp. 285-297
    Details
    Publication Date: 2024-04-03
    Description: The braconid genus Dyscritulus Hincks is a small member of the subfamily Aphidiinae, distributed in Europe and Central Asia. All its species are highly specialized parasitoids of aphids of the genera Drepanosiphum Koch and, probably, Periphyllus van der Hoeven which are mostly associated with maple and sycamore trees (genus Acer). Upon examination of specimens from the Naturalis Biodiversity Center, Leiden, we unexpectedly noted unusual variability in morphological characters compared to other known Dyscritulus species. Further inspection of other material previously identified as Dyscritulus planiceps Marshall, 1896 revealed additional specimens with the same morphological variability. Here we describe a new species of the genus, Dyscritulus europaeus sp. nov., associated with Drepanosiphum aphids on Acer.
    Keywords: Aphid parasitoids ; Europe ; museum collections ; new species ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 2
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    An integrative taxonomic study of north temperate Cotesia Cameron (Hymenoptera, Braconidae, Microgastrinae) that form silken cocoon balls, with the description of a new species (2024)
    In:  Journal of Hymenoptera Research vol. 97, pp. 255-276
    Details
    Publication Date: 2024-04-18
    Description: Using CO1 sequence analysis, we investigated the relationships of Western Palearctic and Nearctic Cotesia that spin aggregated cocoons in the shape of a ball, and as adults are morphologically very similar. The analysis included the conceptual taxa C. tibialis, C. ofella, C. vanessae, C. ruficrus, C. xylina and C. yakutatensis, as well as the newly described species C. trivaliae sp. nov. The examined specimens of C. tibialis, C. ofella, C. vanessae, C. ruficrus and C. trivaliae sp. nov. were collected in several European countries, and C. xylina and C. yakutatensis in Canada and the USA. Molecular analyses showed that C. ruficrus is not closely related to the other studied taxa. Based on the genetic distances as well as biology and morphology, C. vanessae and C. ofella are confirmed as solid taxa. The species C. yakutatensis comprises two entities. Having 8 haplotypes, C. tibialis also emerges as a species complex, divided into two clusters. With 26 detected haplotypes, C. xylina shows the highest diversity, being composed of three segregates. The conceptual species C. tibialis, C. xylina and C. yakutatensis seem to be species complexes containing several candidates for recognition as distinct species. One from the European C. tibialis complex is here described as new, and the impediments to be overcome before the description of further species are outlined
    Keywords: DNA barcoding ; genetic distance ; hosts ; species aggregates
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 3
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    Illustrated key to the European genera of Opiinae (Hymenoptera, Braconidae), with the description of two new Palaearctic genera and two new species (2023)
    Pensoft Publishers
    In:  ZooKeys vol. 1176, pp. 79-115
    Details
    Publication Date: 2024-04-23
    Description: An illustrated key to the European genera of the subfamily Opiinae (Hymenoptera, Braconidae) is presented and two new genera are described and illustrated: Cavopius gen. nov. (type species: Opius (Agnopius) daghoides Zaykov & Fischer, 1983) from West and East Palaearctic regions and Pseudosteres gen. nov. (type species: Biosteres adanaensis Fischer & Beyarslan, 2005) from West Palaearctic region. Two new species are described and illustrated: Cephaloplites gijswijti sp. nov. from Greece and Cavopius depressorius sp. nov. from S. Korea. Opius (Hypocynodus) kilisanus Fischer & Beyarslan, 2005 is a new synonym of Cephaloplites mocsaryi Szépligeti, 1897. The following new combinations are proposed: Cavopius daghestanicus (Telenga, 1950), comb. nov., C. daghoides (Zaykov & Fischer, 1983), comb. nov., Pseudosteres adanaensis (Fischer & Beyarslan, 2005), comb. nov., P. arenaceus (Jakimavičius, 1986), comb. nov., P. christenseni (Papp, 1982), comb. nov., P. pseudarenaceus (Fischer & Beyarslan, 2005), comb. nov., and P. riphaeus (Tobias, 1986), comb. nov. Keys to species are provided for Cavopius gen. nov., Cephaloplites Szépligeti, 1897, and Pseudosteres gen. nov.
    Keywords: Bulgaria ; Cavopius ; Greece ; Korea ; new combination ; new genus ; new ; synonym ; Pseudosteres ; Turkey
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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