Riviste Online SApienza - R.O.SA - 2 (Sapienza University of Rome)
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Revisions to the Andrena fauna of Italy, with the description of a new species (Hymenoptera: Andrenidae)
Get PDFItaly lies at the centre of the Mediterranean basin, and has a large bee fauna due to its mixture of Mediterranean and temperate habitats, and influences from all cardinal directions. This is true also for the genus Andrena; however, studies to date have been fragmentary, and there has been no focused critical revision of the entire fauna. Here the Italian Andrena fauna is critically revised, taking into account, recent taxonomic advances, literature records, and newly and historically collected material. Andrena (Cordandrena) cordialis Morawitz, 1877, A. (Notandrena) bellidis Pérez, 1895, A. (Notandrena) foeniculae Wood, 2020, and A. (Notandrena) fulvicornis Schenck, 1853 are newly reported from Italy. A lectotype is designated for A. (Pallandrena) braunsiana Friese, 1887 which is both confirmed as present in Italy and as the senior synonym of A. (Pallandrena) oblita Warncke, 1967 syn. nov. A lectotype is designated for A. (Orandrena) sisymbrii Friese, 1887 which is a junior synonym of A. (Orandrena) oralis Morawitz, 1876; this species is confirmed as present in southern Italy. A lectotype is designated for A. schlettereri Friese, 1896; this species is excluded from the Italian fauna. Andrena (Micrandrena) puella Alfken, 1938 stat. rev. is recognised as a distinct species endemic to Sardinia and Corsica. Some 27 Andrena taxa suggested as occurring in Italy are excluded or have their synonymic status clarified. One new species is described, A. (Euandrena) sesmae Wood, Cornalba & Praz, sp. nov. from northern and central Italy. A final faunal richness of 218 species is produced, confirming that Italy supports one of the largest Andrena faunas globally
New taxa of Leucocelis Burmeister, 1842 from Namibia, and revision of L. (L.) adspersa s.l. (Fabricius, 1801) (Coleoptera: Scarabaeidae, Cetoniinae)
Get PDFOne new species, with two distinct subspecies, of Leucocelis Burmeister, 1842 is recognized and described from central and northern mountain regions of Namibia, the Erongoberge between Usakos and Omaruru and the Otaviberge above the omonimous town. The nominal subspecies, L. (L.) claveaui claveaui sp. et subsp. nov. has previously been confused with dark navy-blue specimens of the closely related L. (L.) franki Janson, 1888, which is endemic to western Namibia and the South African part of the Gariep Desert. Leucocelis (L.) c. claveaui can easily be separated from the latter species on the basis of background colour and maculation of it dorsal and pygidial habitus, as well as elytral sculpture and aedeagal parameres. The second subspecies, L. (L.) claveaui otavi sp. et subsp. nov., is currently known from a single male specimen collected on the summit of the Otaviberge, at an altitude of about 1900 m. It differs from the nominal subspecies by having a much more extensive white dorsal maculation, a black pygidium and light bluish-green elytral background colour. In the process of analysing the taxonomic relationships of this new species with its closest southern African relatives, it has also emerged that the intraspecific variability of L. (L.) adspersa s.l. (Fabricius, 1801) is actually more complex than previously recognized. As a result, two new subspecies are now included within this taxon, L. (L.) a. orientalis subsp. nov. and L. (L.) a. giannatellii Antoine, 2002 stat. nov., in addition to the two already established, namely L. (L.) a. adspersa and L. (L.) a. umtalina Péringuey, 1907. Further research is needed on the Leucocelis and other Cetoniinae of Namibia, as the country is still badly under-sampled and there are indications that other new or important taxa may be recognised or rediscovered using appropriate field surveys and identification methods
A multimodal corpus approach to understanding parliamentary debates: the role of gesture and institutional discourse
Get PDFThis contribution aims to contribute to current research on the effects of multimodality on ESP education, with particular reference to the situational context of the university language classroom. Changes in the way society interacts and accesses information as a result of the present move from language-centered texts to multimodal texts, have had a profound impact on education. As a result, in order to adapt and respond to the continuously changing educational landscape, higher education teachers are increasingly obliged to develop new or alternative conceptions of meaning and communication. For this purpose, the primary objective and impetus of this work is to demonstrate how multimodality and the multi-semiotic dimensions of digital communication may be incorporated into an academic ESP curriculum. The study also intends to illustrate how corpus linguistic retrieval of phraseology can be used to enhance ESP language acquisition through research-informed analyses of a multimodal corpus of video clips.
La contromarcia olandese: un mito?
Get PDFIl saggio discute il significato storiografico della tattica denominata contromarcia, evidenziando come il suo utilizzo sia sorto, in alcuni casi, ben prima della fine del XVI secolo e in aree diverse dai Paesi Bassi, ovvero nell\u27Europa meridionale e nella parte più orientale dell\u27Asia. Ne consegue che l\u27originalità di questa presunta "innovazione" nella guerra terrestre non va attribuita né all\u27ambiente intellettuale della famiglia Orange-Nassau né, tantomeno, all\u27Occidente stesso. In secondo luogo, l\u27esempio della contromarca è utile per rivedere la categoria storiografica della "piccola divergenza", che ipotizzava un crescente divario, sia in termini socio-economici che militari, tra l\u27Europa nord-occidentale e il resto del continente
Comprehending mountain springs’ hydrogeological perspectives under climate change in Aosta Valley (Northwestern Italy): new automated tools and simplified approaches
No full textMountain springs’ recharging mechanisms have undergone significant changes due to climate change, as well as altered water consumption patterns and policies. Specifically, climate change has influenced the characteristics of spring discharges, evapotranspiration, snow-rainfall ratios, and snow seasonality, bringing new rainfall patterns associated with increased average air temperatures. Consequently, examining how groundwater storage mechanisms are changing in response to climate-driven has become crucial for understanding the future scenarios associated with water availability in such areas. Therefore, increasingly automated tools and simplified approaches need to be applied to continuously monitor hydrogeological variables affecting the spring recharge system. SOURCE (a semi-automatic tool for Spring mOnitoring data analysis and aqUifeR CharactErization) is an advanced semi-automatic Python tool that automates the hydrogeological characterization of the springs’ aquifers. Its functionalities were tested through the analysis of the Promise and Alpe Perrot mountain springs and the related meteorological stations (La Thuile-Villaret and Champdepraz-Chevrère) located in the Aosta Valley region (NW Italy). Input data (flow rate, temperature, electrical conductivity, and rainfall) can be rapidly processed, providing graphical outputs, as well as values for the main hydrodynamic parameters (e.g. auto and cross-correlation coefficients) for an aquifer. Besides, to comprehend the relationship between changes in weather conditions and water availability in the Aosta Valley Region (Northwestern Italy), 7-year precipitation and discharge trends were considered. Despite the increasing trends in flow rate, considering the limited vulnerability values obtained for Alpe Perrot, it is possible to hypothesize a delayed impact of climatic changes on the spring system. The impact of climatic changes on Promise spring is supposed to be faster. However, the nature and dimensions of the aquifer are such as to be resilience to increasing water temperature. Being able to continuously monitor and define the effects induced on water reserves through simplified analysis approaches, such as those presented in this paper, is increasingly necessary, especially for local authorities. A single software package such as SO URC E that contains all the main methods of water spring analysis has the potential to significantly reduce any analysis times
Performance of rainfall and soil moisture satellite products on a small catchment in Central Italy
No full textReliable rainfall and soil moisture data is crucial to investigate hydrogeological processes at the catchment scale (runoff, soil erosion, infiltration, etc.). The present study aims to evaluate the performance of several high-resolution satellite products (IMERG GPM, SM2RAIN, Copernicus Sentinel-1 SSM1km, and SMAP L2_SM_SP) that can support hydrological studies in areas with a lack of ground-based data. The analysis was carried out in a small low permeability catchment in Central Italy (Tatarena basin), equipped with three rain gauge stations. The basin is scarcely anthropized and can be considered representative of many catchments with different soil cover, from forest to farming. The satellite rainfall products were analysed using probability plots, the double mass method, statistical tests and three categorical scores. Satellite soil moisture data were tested with the Hydrological Consistency Index, aiming to verify the consistency between soil moisture satellite data and precipitation. The results show that the IMERG GPM rainfall dataset performs better than SM2RAIN at different time scales. Despite some uncertainties, the Copernicus Sentinel-1 SSM1km proved to be the best-performing soil moisture satellite dataset. Results may be useful for using satellite data to understand runoff processes in poorly instrumented basins
Two new species of the genus Oedemera from China (Coleoptera: Oedemeridae)
Get PDFThe study of material conserved at the National Museum (Prague), revealed the presence of two new species belonging to the genus Oedemera (Seidlitz, 1899): Oedemera (Oedemera) svihlai n. sp. and O. (Oedemera) jani n. sp. These new species are described and illustrated
Statistical analysis of stone decay by salt mist - The cases of Rosa Arronches and SPI portuguese granites
No full textThis study investigates the decay behaviour promoted by salt mist on “Rosa Arronches” and “SPI” Portuguese granites. These are two widely applied granites in the national and international markets, traded and exported to several countries. For the purpose of better understanding their behaviour and mechanical properties under a salt mist atmosphere two series of 150 cycles of a salt mist-controlled atmosphere was applied to sound samples. Petrographic and major mechanical properties were determined, according with European Standards, before and after the artificial weathering, and a statistical analysis of the mass loss between successive cycles was conducted using the exponential model suggested by Mutlutürk et alii (2004). The results revealed a decrease in all the mechanical properties evaluated for both granites, however without compromising their use as dimension stones, thus representing a new insight into the mechanical response to be considered, especially in regions affected by this decay mechanism
New records of the tribe Osmiini from Northern Africa (Hymenoptera: Megachilidae)
Get PDFThis short note presents five newly recorded species of the tribe Osmiini from two Northern Africa countries: Egypt and Libya. The present article represents a first contribution of a series of more extensive studies on wild bees of Egypt and Libya, aimed to record further species not yet mentioned for these two countries, as well as to potentially discover even new species to Science
Distribution and bioclimatic suitability of Duvalius hartigi, subterranean beetle from the lava caves of Mount Etna (Coleoptera: Carabidae, Trechinae)
Get PDFBeetles of the genus Duvalius are widely distributed in subterranean habitats across the Palearctic, from SW Europe in the West to central Asia and China in the East. The genus is also recorded from Sicily, where nine species are currently known. Duvalius hartigi was described in 2006 on material collected in lava caves of Mount Etna and since then no one has ever reported new data about this species. During the years 2020-2022, we conducted a thorough field search in lava caves on Mount Etna, aiming at unraveling the occurrence of new populations. Our work led to the discovery of twenty-two new occurrences, which in turn, allowed us to perform species distribution modeling (SDM) and to explore the bioclimatic suitability of the species, especially in light of future targeted conservation strategies. The species covers a relatively wide altitudinal and thermic range, being found in lava caves from 615 to 1840 meters a.s.l., with temperatures ranging from 3.48 to 14.80°C. According to the SDM results, the suitable area for the species ranges between 500 and 2200 meters a.s.l. with preference for colder and wetter sites, irrespectively to slope orientation. The relatively wide bioclimatic tolerance that we recovered for D. hartigi possibly reflects a high ecological plasticity, representing a stimulating topic for further studies