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Article Reference Integrative taxonomy of giant crested Eusirus in the Southern Ocean, including the description of a new species (Crustacea: Amphipoda: Eusiridae)
Among Antarctic amphipods of the genus Eusirus, a highly distinctive clade of giant species is characterized by a dorsal, blade-shaped tooth on pereionites 5–7 and pleonites 1–3. This lineage, herein named ‘crested Eusirus’, includes two potential species complexes, the Eusirus perdentatus and Eusirus giganteus complexes, in addition to the more distinctive Eusirus propeperdentatus. Molecular phylogenies and statistical parsimony networks (COI, CytB and ITS2)of crested Eusirus are herein reconstructed. This study aims to formally revise species diversity within crested Eusirus by applying several species delimitation methods (Bayesian implementation of the Poisson tree processes model, general mixed Yule coalescent, multi-rate Poisson tree processes and automatic barcode gap discovery) on the resulting phylogenies. In addition, results from the DNA-based methods are benchmarked against a detailed morphological analysis of all available specimens of the E. perdentatus complex. Our results indicate that species diversity of crested Eusirus is underestimated. Overall, DNA-based methods suggest that the E. perdentatus complex is composed of three putative species and that the E. giganteus complex includes four or five putative species. The morphological analysis of available specimens from the E. perdentatus complex corroborates molecular results by identifying two differentiable species, the genuine E. perdentatus and a new species, herein described as Eusirus pontomedon sp. nov. ADDITIONAL KEYWORDS: alpha taxonomy – cryptic species – genetics – molecular systematics – phylogenetic systematics.
Located in Library / RBINS Staff Publications 2020
Article Reference A review of Rhyssemodes species from China and Mongolia (Coleoptera: Scarabaeidae: Aphodiinae: Psammodiini)
Located in Library / RBINS collections by external author(s)
Article Reference Identification of the African–European Erymnochelys group (Pleurodira, Podocnemididae) in the Belgian fossil record: first finding of Eocenochelus eremberti outside its type locality
An almost complete plastron, as well as several peripherals and a costal plate of a turtle from the middle Eocene of Saint-Gilles, is presented here. Although this turtle specimen was donated to the Institut royal des Sciences naturelles de Belgique (Brussels, Belgium) more than a century ago, it remained undescribed. Its study allows us to recognize the second pleurodiran in the Belgian fossil record, where, until now, the Eocene Neochelys was the only one known. The Belgian material of Neochelys is known in lower Eocene (early Ypresian) levels, but the new pleurodiran specimen comes from the middle Eocene (early Lutetian). It is the first partial articulate shell of a pleurodiran turtle recognized in Belgium, and the only member of this clade recognized in this country at specific level. The new specimen is a representative of the so-called Erymnochelys group, this lineage being known in Africa from the Upper Cretaceous to the present but in Europe only during the Eocene. It represents the first specimen of Eocenochelus eremberti identified outside its type locality, the French region of Saint-Germain-en-Laye (Yvelines, Île-de-France), where only one specimen was found. The plastron of the Belgian individual corresponds to the most complete for this species. Its analysis allows us not only to broaden the range of paleobiogeographical distribution of Eocenochelus eremberti but also to improve the knowledge about the anatomy and variability of this taxon.
Located in Library / RBINS Staff Publications 2017
Article Reference Note on some Ptomaphagus Hellwig, 1795 collected in the Jean Massart Botanical Garden (Brussels-Capital Region, Belgium) with a new record for the Belgian fauna (Coleoptera, Leiodidae, Cholevinae, Ptomaphagini)
Located in Library / RBINS Staff Publications 2021
Article Reference Sogana cysana sp. nov., a new tropiduchid planthopper from Chu Yang Sin National Park in Vietnam and key to Vietnamese species of the genus (Hemiptera: Fulgoromorpha: Tropiduchidae)
Located in Library / RBINS Staff Publications 2020
Article Reference Revision of the genus Bixorestes Pascoe, 1867 with description of new species and notes on the Biology (Coleoptera, Cerambycidae, Cerambycinae, Typhocesini)
Located in Library / RBINS collections by external author(s)
Article Reference The genus Agnocoris in Belgium (Hemiptera: Miridae)
Located in Library / RBINS collections by external author(s)
Article Reference Deciduous Molar Morphology from the Neolithic Caves of the Meuse River Basin, Belgium
The karstic caves of the Meuse River Basin in Belgium preserve nearly 200 collective burials dating to the late Neolithic period. Among these, the cave burials of Hastière Caverne M, Sclaigneaux, Bois Madame and Maurenne Caverne de la Cave are represented by numerous individuals and radio-carbon dated to circa 4,635 to 3,830 years B.P. Dental casts from mandibular and maxillary deciduous molars are scored using multiple methods to provide a regional overview of the prevalence and expres-sion of deciduous molar crown traits, and to compare frequencies between cave burial sites with a focus on temporal differentiation. Carabelli’s trait varies from a small pit to a full cusp, the largest of which are found at Hastière Caverne M. The hypoconulid ranges from moderately large to very large. A meta-conulid is absent or small. Although the results are contingent on idiosyncratic preservation, differences in the frequencies of expression of Carabelli’s trait, a pronounced hypoconulid, and the presence of a metaconule and protostylid separate the earlier cave burial at Hastière Caverne M from the final/late Neolithic sites of Sclaigneaux and Bois Madame.
Located in Library / RBINS Staff Publications 2018
Article Reference La pratique du lancer chez les Néolithiques du Bassin mosan (Belgique, 4500 - 2500 av. J.-C.)
Located in Library / RBINS Staff Publications 2018
Article Reference Notes on Oriental Asilidae with six new species from Vietnam (Diptera: Brachycera)
Located in Library / RBINS Staff Publications 2017