El declive de los polinizadores y la consecuente necesidad de realizar seguimiento de sus poblaciones implica tener un conocimiento óptimo de la distribución presente e histórica de las especies involucradas. En este contexto, las colecciones entomológicas adquieren un valor añadido. El desarrollo de una colección nacional de polinizadores de referencia es justamente el objetivo del proyecto INC-STEP, en el marco del cual se han realizado abundantes identificaciones de sírfidos eristalinos. De todas las identificaciones realizadas, solo se destaca una selección de aquellas consideradas relevantes por suponer novedades faunísticas en ciertos ámbitos geográficos o por la importancia taxonómica de los géneros a los que pertenecen. En total, se tratan 29 especies, de las cuales tres son primeras citas para España. Este trabajo confirma la importancia de las colecciones en el entendimiento de la distribución de los eristalinos y de los polinizadores en general, y recuerda que todavía queda mucha información por extraer en los especímenes de colección.
The tribe Eucerini (Hymenoptera: Apidae) is well represented in the Iberian Peninsula, yet significant distributional gaps persist for several species. We revised 664 specimens of Eucerini preserved in the private collection of Luis Óscar Aguado Martín, documenting 46 species from Spain, Portugal, and the Canary Islands. The study provides several regional first records and notable range extensions. The first confirmed Iberian records of Eucera (Eucera) curvitarsis Mocsáry, 1879 and Eucera (Eucera) dafnii Dorchin, 2019 represent remarkable westward extensions of their previously known European distributions. The presence of Eucera vulpes in northeastern Iberia is confirmed and its known distribution expanded. In addition, the examination of a specimen labelled as the holotype of Eucera (Synhalonia) asensioi Tkalců in litt. demonstrates that it corresponds to Eucera tricincta Erichson, 1835; the unpublished name is therefore unavailable and should be excluded from Iberian faunal lists. Our results highlight the importance of revising historical entomological collections under current taxonomic frameworks. Such collections represent valuable repositories of biodiversity data and continue to contribute significantly to the knowledge of Iberian bees. Dataset published through GBIF (DOI: 10.15470/dq933w)
The Mediterranean coast hosts a high diversity of birds, with resident, wintering, and migratory species that coexist according to seasonal patterns. This study highlights the strategic role of urban green spaces in the conservation of avifauna, focusing on Montjuïc hill (Barcelona), which integrates natural habitats with ornamental and themed gardens. Between December 2023 and November 2024, over the course of 144 fieldwork days, 8,974 individuals of 75 bird species were recorded. Resident species predominated (32.00 %), followed by trans-Saharan migrants (28.00 %) and wintering species (24.00 %). Curruca melanocephala, Phylloscopus collybita, and Ficedula hypoleuca were the most abundant species within their respective groups. Species richness reached maximum values in spring and autumn, coinciding with the temporal overlap of migratory and wintering species. Natural areas, dominated by open habitats, concentrated more wintering and trans-Saharan migratory species. The phenological spectrum of some species indicates a regular use of Montjuïc as a stopover area during seasonal movements.
New distribution records of Andrena marginata Fabricius, 1777 and Andrena pellucens Pérez, 1895 are presented to improve knowledge of the subgenus Margandrena Warncke, 1968 in Spain and the Iberian Peninsula. Data on floral preferences, flight periods, updated distribution maps, and intraspecific variation in coloration in both sexes are provided. Our results also confirm the parasitic relationship between Nomada argentata Herrich-Schäffer, 1839 and A. pellucens.
The structure of harvestmen communities sampled in the Carrascal de la Font Roja Natural Park (Alcoi, Alicante, Spain) and the Sierra de Aitana (Confrides, Alicante, Spain) was analysed across 12 different localities, primarily sampled using pitfall traps, between 2020 and 2022. A total of 847 harvestmen, belonging to 10 species, were collected. Odiellus levantinus, Nelima hispana, Phalangium minus, and Cosmobunus granarius, present in both areas, were the most frequent species, with the highest niche breadth values. O. levantinus was the most abundant species in the Sierra de Aitana and Homalenotus coriaceus in the Carrascal de la Font Roja Natural Park. All species exhibited stenochronous development. The parameters of Clench's function indicated efficient sampling, and the richness values offered by the different estimators were close to those observed in both areas. In the Sierra de Aitana, shrublands were the most diverse localities, with C. granarius and P. minus as indicator species; while in the Carrascal de la Font Roja Natural Park, herbaceous and shrubland localities within the sunlit side were the most diverse. Dataset published through GBIF (DOI: 10.15470/obyxc1)
