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Article Reference Recent Belgian records of the hornet rove-beetle Quedius (Velleius) dilatatus (Fabricius, 1787) (Coleoptera: Staphylinidae)
We report recent records of the rove beetle Quedius dilatatus (Fabricius, 1787) in Belgium. This beetle lives in nests of the European hornet Vespa crabro L., 1758 (Hymenoptera: Vespidae) and possibly profits of the recent expansion of its host. However, it seems its recent distribution is also linked to the use of recently more often used trap types, baited with an ethanol, water, glycerol and acetic acid mixture, or baited with red wine with ethanol or even white or red wine vinegar, mimicking the smell of freshly decaying wood. These methods of trapping are discussed in this paper.
Located in Library / RBINS Staff Publications 2024
Article Reference Regulation of chemical emissions from offshore wind farms: comparative analysis and policy recommendations for the North Sea
Located in Library / RBINS Staff Publications 2025 OA
Article Reference Chemical emissions from offshore wind farms: From identification to challenges in impact assessment and regulation
Located in Library / RBINS Staff Publications 2025 OA
Article Reference The extraordinary diversity of ants (Hymenoptera: Formicidae) of leaf litter in the Yangambi Biosphere Reserve, Tshopo, Democratic Republic of the Congo
The Democratic Republic of the Congo has the highest diversity of ant species in the Afrotropical region, even though it remains largely understudied in the modern era. The aim of this study is to report on an inventory of the litter ants from the Yangambi Biosphere Reserve in the Tshopo Province, north of the Congo River. Three habitats (fallow, secondary forest and primary forest) were sampled at six localities. A total of 190 ant species belonging to 50 genera and 8 subfamilies, have been recorded in the Yangambi biosphere region. Besides, 96 species were added to Tshopo Province, bringing the total to 306, a 44% increase; and we added 55 species to the already diverse Democratic Republic of the Congo, raising the total record to 791 species, a 7% increase. At least 10% of the collected species are new to science.
Located in Library / RBINS Staff Publications 2025
Article Reference New distributional data and species records of Cypriot ants (Hymenoptera: Formicidae) based on museum collections
Specimens deposited in Natural History Museum collections are vital for the study of biodiversity, human drivers of biodiversity loss, and other environmental and socioeconomic problems. Despite recent advances in filling our knowledge gaps regarding the myrmecofauna of Cyprus, the island’s biodiversity is considered to be under-sampled. In this article, ant specimens from Cyprus deposited at the Natural History Museums of Crete, the Agricultural University of Athens (Greece), the Muséum d'Histoire Naturelle de Genève (Switzerland), the Royal Belgian Institute of Natural Sciences (Belgium), and the Lund University Biological Museum (Sweden) are examined, presenting a total of 163 specimens belonging to 24 species examined. Stigmatomma denticulatum Roger, 1859 (Amblyoponinae), Myrmecina graminicola (Latreille, 1802), Stenamma debile (Foerster, 1850) (Myrmicinae), and Biogeographia 40 (1): a047 Demetriou et al., 20252 Cryptopone ochracea (Mayr, 1855) (Ponerinae) are reported for the first time for the island of Cyprus, raising its known ant diversity from 77 to 81 species, while additional distributional data are given for species with only a handful of distributional records, i.e. Tapinoma festae Emery, 1925 (Dolichoderinae), Aphaenogaster subterraneoides Emery, 1881 (Myrmicinae), and Hypoponera eduardi (Forel, 1894) (Ponerinae.
Located in Library / RBINS Staff Publications 2025
Article Reference First comprehensive catalogue of hibernating Darwin wasps in the Western Palaearctic (Hymenoptera, Ichneumonidae)
Background In the Western Palaearctic, many species of Darwin wasps exhibit a form of diapause known as free-living adult diapause, similar to hibernation in certain beetle, bumblebee and butterfly species. This study provides a first comprehensive overview of all known hibernating species and aims to improve the current ecological knowledge. New information We reviewed 439 species, confirming free-living adult diapause in 340; 81 remain unverified and 18 are excluded, which have been incorrectly reported as hibernators in the past. The validated dataset includes 7443 records from 27567 specimens, spanning over 235 years of both published and unpublished observations. We report 29 species as hibernators for the first time. Amongst the records, 388 provide the first evidence of hibernation for a species in a given country, with 67 also representing the species' first national record. We highlight the value of field-based data and caution against relying solely on collection dates to study diapause. The observed variability in diapause strategies and hibernacula underscores the importance of nature management for biodiversity conservation, especially preservation of microhabitats.
Located in Library / RBINS Staff Publications 2025
Article Reference First Measurements of Mixed Floral Traits Influencing Anacardium occidentale (Anacardeacae) Attractiveness to Bees in Côte d'Ivoire: Conservation and Agricultural Implications
In Sub-Saharan Africa, cashew plants face challenges in suitable pollination and good agronomic performances. These challenges can largely be attributed to the ability of cashew floral traits in pollinator attraction. However, especially in Côte d'Ivoire, little is known about the roles of morphology and density of cashew flowers and floral rewards in attracting bee species. Likewise, the relationships between plants' attractiveness, number of pollinator visits, and fruiting rate are rarely the focus of study. Therefore, we contrasted in 3 Ivoirian regions two categories of cashew seeing the bees' foraging preference toward their flowers: trees with high foraging intensity versus trees with low activity (respectively called preferred versus non-preferred plants). Our aim was to know whether the floral traits varied among these categories of plants, and whether this variation might affect bees' foraging intensity and the yield. Results showed that the two categories of cashew were significantly different in density of flowers, quantity of pollens and nectars, and their contents in sugars and amino-acids in the pollens and nectars, and showed that these floral traits were strongly involved in bee pollinators recruitment (Wilks = 0.002384, df = 1, p < 0.0001). These floral traits also significantly increased the bees' visitation networks from 11 to 38 species and their interactions from 984 to 8271 visits, and agronomic performances from 10.63% ± 6.65% to 50.15% ± 5.34%. Floral traits related to bee visitations, if well-investigated, may be used to identify high-yielding cashew plants and preserve pollinators.
Located in Library / RBINS Staff Publications 2026
Article Reference High ant (Hymenoptera: Formicidae) diversity revealed in Akagera National Park in eastern Rwanda
Ants represent a crucial component of terrestrial ecosystems owing to their roles in nutrient cycling, soil aeration and predation. However, myrmecological studies are relatively rare in the Afrotropics, including Rwanda. This study reveals high ant diversity within Akagera National Park in eastern Rwanda, an ecologically rich area comprising savannas, woodlands and wetlands. A nonsystematic sampling scheme was used across different habitats within the park, implementing various sampling techniques, namely pitfall traps, leaf litter sifting, Winkler leaf litter extraction, vegetation sweeping and hand collection from rocks, rotten wood and dead trees. The findings indicate a high diversity of ant species, with six subfamilies comprising 41 genera including 119 named species and 68 morphospecies. A minimum of 17 of these morphospecies represent undescribed species. Of the collected species, 149 were recorded for the first time in Rwanda. These findings highlight the status of Akagera National Park as a biodiversity hotspot. They also provide a baseline inventory for future entomological, ecological and conservation efforts in Akagera National Park. We recommend additional studies to formally describe the morphospecies currently confirmed as undescribed and to further investigate the status of the remaining unidentified morphospecies
Located in Library / RBINS Staff Publications 2026
Manual Reference Samenvatting van de staat van het marien milieu. In: Belgische staat (2025). Mariene Strategie Deel 1 voor de Belgische mariene wateren.
Located in Library / RBINS Staff Publications 2025 OA
Article Reference New archaeozoological analysis of baboons buried at Hierakonpolis (Upper Egypt) shows two species were imported in the Predynastic period
Excavations, on-going since 1979, in the elite Predynastic cemetery HK6 at Hierakonpolis, Upper Egypt, have revealed the burials of more than 150 domestic and wild animals. These animals, buried whole, were interred in subsidiary graves surrounding the elaborate tombs of the highest elite, who were local or possibly regional rulers in the Naqada IC-IIB period (c. 3700-3500 BC). Among the wild fauna are elephants and baboons, species that were not part of Egypt’s native fauna during the Holocene and must have been obtained from elsewhere. Here we discuss all the finds of baboons made so far. These include 20 individuals, constituting the earliest evidence for the occurrence of these primates in Egypt. Conflicting species identification in previous publications (first as Papio hamadryas and later as Papio anubis) led us to re-evaluate the diagnostic features described to differentiate them by examining a large series of modern skulls from natural history collections. Using the criteria that we found to be valid, we show that both P. hamadryas and P. anubis were present at Hierakonpolis. At least six graves contained baboons, which were buried either in groups of up to 8 individuals or as single interments. These graves can be associated with five of the mortuary complexes identified so far, covering a time span of several generations. Rachitis, observed in one very young animal is the only evidence so far for metabolic disorders that might be related to local breeding. This suggests that the baboons were not routinely bred on site and may have been imported on several occasions into Hierakonpolis, indicating more complex trade interactions with the lands to the far south than previously assumed.
Located in Library / RBINS Staff Publications 2026