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Article Reference Cataulacus nywelendefu sp. nov. (Hymenoptera: Formicidae): a New Arboreal Ant from Tanzania
A new species of the genus Cataulacus: Cataulacus nywelendefu sp. nov. is described from the Segoma Forest in Northeastern Tanzania. An addition to the existing key for Afrotropical Cataulacus species is given.
Located in Library / RBINS Staff Publications 2026 OA
Article Reference Planting food forests can increase soil biodiversity in agricultural landscapes of Northwest Europe
Food forests are an emerging agroecosystem in the temperate zone, aimed at providing food while supporting high levels of biodiversity. How food forestry impacts belowground biodiversity is, however, largely unknown. We compared communities of 12 taxonomic groups of soil organisms between 15 food forests and nearby grasslands, croplands and forests in Northwest Europe. Food forest soil communities appeared to differ from communities in grass- and croplands and more closely resembled forest communities in terms of total biomass or number of individuals of most taxonomic groups, with especially higher numbers of most macroarthropods. In terms of composition, food forest communities of most groups were overall intermediate between those in grass- and croplands and those in forests. For microorganismal and microfaunal groups, food forest communities bore a greater resemblance to grass- and cropland communities than to forest communities. Besides a higher alpha-diversity for non-arbuscular mycorrhizal fungi and certain macroarthropod groups in food forests, differences in alpha- and beta-diversity were overall limited. As food forests appear to support different soil communities than grass- and croplands, planting food forests could increase soil biodiversity in agricultural landscapes.
Located in Library / RBINS Staff Publications 2026 OA
Article Reference Spiroplasma Display an Intricate Continuum of Infection Heterogeneity and Persistence in Myrmica Ants
Many bacterial taxa evolved facultative symbiotic associations with insects and spread through host populations by horizontal and maternal transmission. Co-infection at the individual host level may facilitate or constrain the spread of facultative symbi- onts. Due to insufficiently detailed genotyping, co-infections of maternally transmitted symbionts often remain hidden, limit- ing our understanding of (co-)infection dynamics. Spiroplasma bacteria exhibit multiple independent origins of symbiosis with insects and have poorly understood patterns of transmission and co-infection. Here, we examined these traits of Spiroplasma symbiosis using Myrmica ants, a system known for high frequencies of single Spiroplasma infections. Through exhaustive genotyping of 75 colonies across seven Myrmica species, we uncovered multiple cryptic co-infections involving two distinct Spiroplasma clades that display significantly different infection frequencies in workers. Within Myrmica ruginodis, infection heterogeneity was contingent on ant caste and was lower in workers. Remarkably, the sMyr Spiroplasma variant infected four Myrmica species and was widespread in queens and workers. We provide phylogenomic and functional genomic support for an exceptionally stable symbiosis with maternally acquired sMyr, with a predicted infection persistence of seven million years in the Myrmica scabrinodis species group. Our findings reveal that Spiroplasma can display complex infection heterogeneity and evolve an evolutionary stable maternally acquired infection within insect hosts.
Located in Library / RBINS Staff Publications 2026 OA
Article Reference On the Darwin Core Term dwc:habitat, and the Need to Adopt a European Vocabulary Based on NATURA2000 and EUNIS Classifications, with a Comment on International Applicability
Darwin Core (DwC) is an essential standard for sharing biodiversity data. However, the term dwc:habitat suffers from an inherent ambiguity due to its free-text format. This ambiguity severely compromises the interoperability and reusability of habitat data, hindering large-scale comparative analyses and impeding the formulation of effective conservation policies. As a solution to this problem, we propose adopting controlled vocabularies and ontologies. The NATURA2000 and EUNIS habitat classifications emerge as ideal candidates to standardize dwc:habitat. NATURA2000 offers a consolidated regulatory framework and habitat type definitions with direct implications for European conservation, while EUNIS provides a more comprehensive, hierarchical, and scientifically grounded system with the ability to cross-map with other standards. The implementation of such vocabularies would significantly improve the quality, consistency, interoperability, and reusability of habitat data, more robustly supporting scientific research and conservation policies.
Located in Library / RBINS Staff Publications 2026 OA
Article Reference Uncovering ant diversity across forest successional stages in the Yangambi Biosphere Reserve (DRC): Insights from Winkler and pitfall trap sampling
Litter ant communities constitute an important component of biodiversity in tropical regions. They are currently used in several ecosystem management programmes to as- sess forest health. The aim of this study was to uncover the ant diversity across forest successional stages (fallow land, secondary forest and primary forest) in the Yangambi Biosphere Reserve, the Democratic Republic of the Congo. These habitats were sam- pled at six localities using pitfall traps and Winkler extractions. In total, 190 ant species belonging to 50 genera and eight subfamilies were recorded in the Yangambi Biosphere Reserve. Ant diversity increased significantly along the successional gradient, being lowest in fallow land, intermediate in secondary forest, and highest in primary forest. Sixty ant species were shared across all three habitats, while each habitat supported a distinct assemblage of species. Primary forests contained the greatest number of exclu- sive species, followed by secondary forests and fallow land. Winkler extractors captured substantially more ant species than pitfall traps, recording nearly 50% greater species richness. However, a significant portion of the ant fauna in the Yangambi Biosphere Re- serve likely remains unrecorded, and additional sampling methods (like arboreal traps, net sweeping and baiting) could provide a more complete picture of its biodiversity.
Located in Library / RBINS Staff Publications 2026 OA
Article Reference New records of the shining guest ant Formicoxenus nitidulus (Nylander, 1846) (Hymenoptera: Formicidae) in Belgium
We report new records of the shining guest ant Formicoxenus nitidulus (Nylander, 1846) from ten sites across Belgium. The species was found in association with Formica rufa Linnaeus, 1761, Formica polyctena Förster, 1850 and Formica pratensis Retzius, 1783 nests across six provinces (Antwerp, Flemish Brabant, Liège, Limburg, Luxembourg, Namur). Records were obtained using selective traps, placed on the margins of host mounds as well as by direct observations on host nests. These observations indicate that F. nitidulus is more widespread in Belgium than previously thought.
Located in Library / RBINS Staff Publications 2026 OA
Article Reference Discovery-defense strategy as a mechanism of social foraging of ants in tropical rainforest canopies
Located in Library / RBINS Staff Publications 2017
Article Reference Distance–decay patterns differ between canopy and ground ant assemblages in a tropical rainforest
Located in Library / RBINS Staff Publications 2017
Article Reference Spatial and functional structure of an entire ant assemblage in a lowland Panamanian rainforest
ABSTRACT Ants are a major ecological group in tropical rainforests. Few studies in the Neotropics have documented the distribution of ants from the ground to the canopy, and none have included the understorey. A previous analysis of an intensive arthropod study in Panama, involving 11 sampling methods, showed that the factors influencing ant beta diversity (i.e., changes in assemblage composition) were, in decreasing order of importance, the vertical (height), temporal (season), and horizontal (geographic distance) dimensions. In the present study, we went one step further and aimed (1) to identify the best sampling methods to study the entire ant assemblage across the three strata, (2) to test if all strata show a similar horizontal beta diversity and (3) to analyze the functional structure of the entire ant assemblage. We identified 405 ant species from 11 subfamilies and 68 genera. Slightly more species were sampled in the canopy than on the ground; they belonged to distinct sub-assemblages. The understorey fauna was mainly a mixture of species found in the other two strata. The horizontal beta diversity between sites was similar for the three strata. About half of the ant species foraged in two (29%) or three (25%) strata. A single method, aerial flight interception traps placed alongside tree trunks, acting as arboreal pitfall traps, collected half of the species and reflected the vertical stratification. Using the functional traits approach, we observed that generalist species with mid-sized colonies were by far the most numerous (31%), followed by ground- or litter-dwelling species, either specialists (20%), or generalists (16%), and arboreal species, either generalists (19%) or territorially dominant (8%), and finally army ants (5%). Our results reinforce the idea that a proper understanding of the functioning of ant assemblages requires the inclusion of arboreal ants in survey programs.
Located in Library / RBINS Staff Publications 2017
Article Reference Inter‐specific aggression generates ant mosaics in canopies of primary tropical rainforest
Located in Library / RBINS Staff Publications 2017