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Review of the historical collection of Charipinae (Hymenoptera: Figitidae) preserved in the RBINS
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Specimens from the subfamily Charipinae (Figitidae) deposited in the Royal Belgian Institute of Natural Sciences (RBINS) were examined, in total 44 individuals were identified, belonging to eleven species. Five species are reported for the first time in Belgium: Alloxysta citripes (Thomson, 1862), A. fuscipes (Thomson, 1862), A. halterata (Thomson, 1862), A. ramulifera (Thomson, 1862) and Phaenoglyphis fuscicornis (Thomson, 1877); making 14 known species of Charipinae in Belgium. Additionally, for the first time, host information is reported for P. fuscicornis and A. consobrina (Zetterstedt, 1838).
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First record of three alien termite species in Belgium
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Subterranean termites (Family Rhinotermitidae) and drywood termites (Family Kalotermitidae) can be pest species as they have the potential to inflict damage to wooden constructions and can therefore cause a significant economic impact. Some species of these families are highly destructive and are invasive in many parts of the world. New introductions and/or the spread of termites are often caused by import of infested wood, plants or soils. The present study reports the first records of three exotic termite species in Belgium, viz. Cryptotermes brevis and Reticulitermes banyulensis in Brussels (Brussels Capital Region), and Reticulitermes flavipes in Brugelette (Hainaut province; Walloon region). The morphological identification of the specimens (N = 8) was validated by DNA-barcoding. Cryptotermes brevis and Reticulitermes banyulensis infestations are probably of little concern as local climatological conditions make it unlikely for either species to survive in the temperate climate in Belgium. In contrast, it is likely that Reticulitermes flavipes may become established and will spread to other sites in Belgium.
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Overview of myrmecological studies and a checklist of the ants (Hymenoptera, Formicidae) of the Democratic Republic of Congo
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The production of species checklists is fundamental to setting baseline knowledge of biodiversity across the world and they are invaluable for global conservation efforts. The main objective of this study is to provide an up-to-date extensive checklist of the ants of the Democratic Republic of Congo (DRC), the largest country in sub-Saharan Africa, based on available literature to serve as a foundation for future research and ant faunistic developments. We gathered the literature available to us, most of it compiled from the Global Ant Biodiversity Informatics (GABI) Project and treated the data to province level when possible. We also offer insight into who, when and where contributions have emerged to the current knowledge of the ants of the DRC and each of its 26 provinces. The current list is restricted to valid species and subspecies, discarding morphospecies and some misidentified taxa. The list comprises eight subfamilies, 64 genera and 736 species, the highest species diversity for a country located within the Afrotropical realm.
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Eric Simon (1948-2018): his contributions to the knowledge of Campanian-Maastrichtian (Late Cretaceous) brachiopods.
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To colour or not to colour: Colour patterns and pigments in Invertebrates from the Palaeozoic of Belgium.
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Almost nothing is known about the evolution of shell colour in invertebrates. This is largely due to the ultra-rarity of fossils in which colour patterns and pigments are preserved and immediately visible, and therefore easy to identify, especially when these are hundreds of millions of years old. This hampers our understanding of the role and function of colour in extinct animals, their ecology, mode of life, interactions, development, and evolution. A good example for this ultra-rarity is the Palaeozoic of Belgium, world-renowned for its exquisitely preserved fossils of the Devonian and Carboniferous, enabling to document major transitions in ecosystem dynamics and the evolution of life on Earth (e.g. nekton revolution, terrestrialisation, major climate changes, anoxic events, biodiversity crises) but from which only a few cephalopod, bivalve and gastropod mollusc and brachiopod shells were historically documented preserving coloured traces (mostly by L.-G. de Koninck and P. de Ryckholt, mid to late 19th century). However, recently, it was discovered that many more specimens preserve these traces, in particular those from Tournaisian–Viséan shallow marine reef environments, allowing to investigate its occurrence in different evolutionary lineages of marine invertebrates exactly during one of the main periods of revolution in geologic history. In Brain project B2/P233/P2 nicknamed COLOURINPALAEO financed by Belspo, after gathering all the specimens available in the main Belgian collections, we will use different techniques (multispectral photogrammetry and spectro-imaging) to better visualise the preserved colour patterns and pigments. Furthermore, advanced spectroscopic techniques, namely Raman micro-probe spectroscopy, synchrotron trace elemental mapping and absorption spectroscopy, will be used to identify the chemical signature of the pigments as well as their mode and pathways of preservation. Some of the first results on this multidisciplinary study on a unique set of Belgian fossils will be presented.
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Belgian fossil shells as fortune tellers? Unique climate archives yet hardly tapped into
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Shells are powerful climate archives - they add growth increments on timescales as short as sub-daily, and often live for decades, some even more than 100 years. With the aid of isotope and trace-elemental geochemistry, the effects of climate change on temperature, seasonality and extreme weather can be read from them. Belgium is one of the few countries blessed with extensive records of exquisitely preserved fossil shells dating to the Pliocene, a geologic period dating from 5.3 to 2.6 million year ago. Critically, the Pliocene is the youngest geologic time during which CO2 levels were >400 ppm and mean annual temperatures comparable to those to be reached by the end of this century, following Shared Socioeconomic Pathways (SSP) 2-4.5 of the IPCC. It therefore presents an ideal near-future analogue. Rich collections of well-preserved Belgian Pliocene shells are in the Royal Belgian Institute of Natural Sciences (RBINS), and more material is collected from temporary outcrops like building sites in and around Antwerp with the aid of citizen-scientists. In recent years, RBINS collaborated with national (VUB, KULeuven) and international (VU Amsterdam, Naturalis, UDerby) researchers to start tapping into these exquisite climate archives, unraveling previously unknown details on Belgian past climate, predicting amplified seasonality in Europe in a warmer world, and investigating the potential of fossil shells to document heat waves and storms. The poster will highlight some of this recent collaborative work, and, why the RBINS, through its collections, fieldwork and expertise can play a pivotal role in climate research in Belgium.
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Binkhorstiidae, a new family of crabs (Decapoda, Brachyura, Retroplumoidea) from the upper Cretaceous of the Netherlands and Belgium.
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In addition to the type species, Binkhorstia ubaghsii, which is fairly common in the upper part of the Nekum Member (Maastricht Formation) in the wider vicinity of Maastricht (the Netherlands) and Binkhorstia euglypha, which appears to be restricted to the overlying Meerssen Member of the same formation (uppermost Maastrichtian), a third member, B. desaegheri nov. sp., is recorded from the upper middle Santonian of the Campine area in north-east Belgium. The history of Binkhorstia is convoluted, serving as a prime example of how attempts to unravel the higher-level taxonomic position of late Mesozoic crabs may prove difficult. Over time, the genus has been referred to various families or subfamilies, either podotreme or putative eubrachyuran; here the new family Binkhorstiidae is placed in the superfamily Retroplumoidea. Binkhorstiids appear to have been a relatively short-lived endemic group that fell victim to Cretaceous‒Paleogene (K/Pg) boundary perturbations.
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Amplified seasonality in western Europe in a warmer world
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First record of the tropiduchid planthopper genus Sogana Matsumura, 1914 from Thailand with a new species (Hemiptera: Tropiduchidae)
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A Tale of Three Oceans — Taxonomy of the Holothuria (Thymiosycia) arenicola Semper, 1868 complex (Echinodermata: Holoturoidea: Holothuriidae)
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The ubiquitous sea cucumber Holothuria (Thymiosycia) arenicola Semper, 1868, externally characterized by a double row of dark blotches of various sizes on its dorsal body wall and a cryptic behaviour, is generally assumed to have a wide tropical distribution, although it has not been reported from the Eastern tlantic. Careful morphological examination, with emphasis on the ossicle assemblage, of type and non-type H. arenicola specimens sampled in the Indian, Pacific and tlantic Ocean, its subjective synonyms and species with a similar colouration and habit, revealed that H. arenicola is often confused with other species. This paper formally separates the different species in the H. arenicola complex, one of them being a species new to science: Holothuria (Thymiosycia) kerriensis sp. nov. dditionally, we describe two other species that are often confused with H. arenicola: Holothuria (Lessonothuria) gracilis Semper, 1868 and H. (Thymiosycia) strigosa Selenka, 1867. The H. arenicola complex per se is keyed-out, with the ossicle assemblage of the musculature being recognised as an important, previously largely neglected, guide. This contribution highlights the importance of building and curating well-maintaned natural history collections to understand biodiversity through time and space.
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