The loss of flight is common in the keratin beetle genus Phoberus Macleay, 1819 (Coleoptera: Trogidae)-20 out of the 49 species in this genus exhibit metathoracic-wing reduction in various degrees ...rendering them flightless. In this paper another flightless species, Phoberus villeti Strümpher, new species, is described and illustrated from the Amathole mountains in the Eastern Cape Province of South Africa. The new species is micropterous having tightly fused elytra (only wing rudiments visible), rounded humeral angles and a characteristic rounded body shape. However, it is most notable for its large size (~12 mm) and the distinctive tufts of yellow setae present on the elytra.
Two major types of passive margins are recognized, i.e. volcanic and non-volcanic, without proposing distinctive mechanisms for their formation. Volcanic passive margins are associated with the ...extrusion and intrusion of large volumes of magma, predominantly mafic, and represent distinctive features of Larges Igneous Provinces, in which regional fissural volcanism predates localized syn-magmatic break-up of the lithosphere. In contrast with non-volcanic margins, continentward-dipping detachment faults accommodate crustal necking at both conjugate volcanic margins. These faults root on a two-layer deformed ductile crust that appears to be partly of igneous nature. This lower crust is exhumed up to the bottom of the syn-extension extrusives at the outer parts of the margin. Our numerical modelling suggests that strengthening of deep continental crust during early magmatic stages provokes a divergent flow of the ductile lithosphere away from a central continental block, which becomes thinner with time due to the flow-induced mechanical erosion acting at its base. Crustal-scale faults dipping continentward are rooted over this flowing material, thus isolating micro-continents within the future oceanic domain. Pure-shear type deformation affects the bulk lithosphere at VPMs until continental breakup, and the geometry of the margin is closely related to the dynamics of an active and melting mantle.
How well do serum samples from persons vaccinated with the mRNA-1273 vaccine neutralize the P.1 lineage, the B.1.1.7 lineage, the B.1.1.7 lineage plus the E484K mutation, the B.1.351 lineage, and the ...B.1.427/B.1.429 lineage of SARS-CoV-2? This study provides an answer.
The cubic perovskite SrVO3 is generally considered to be a prototype strongly correlated metal with a characteristic three-peak structure of the d-electron spectral function, featuring a renormalized ...quasiparticle band in between pronounced Hubbard sidebands. Here we show that this interpretation, which has been supported by numerous “ab initio” simulations, has to be reconsidered. Using a fully self-consistent GW + extended dynamical mean-field theory calculation we find that the screening from nonlocal Coulomb interactions substantially reduces the effective local Coulomb repulsion, and at the same time leads to strong plasmonic effects. The resulting effective local interactions are too weak to produce pronounced Hubbard bands in the local spectral function, while prominent plasmon satellites appear at energies which agree with those of the experimentally observed sidebands. Our results demonstrate the important role of nonlocal interactions and dynamical screening in determining the effective interaction strength of correlated compounds.
A new species of keratin beetle from Western India, Omorgus (Omorgus) khandesh Strümpher & Kalawate, new species, is described and illustrated. The new species is morphologically most similar to O. ...(O.) rimulosus (Haaf, 1957). The latter is redescribed and illustrated to enable accurate recognition of both species. Based on this work the following taxonomic changes are proposed: Three species are transferred from the subgenus Afromorgus Scholtz, 1986 to the nominotypical subgenus: O. (O.) inclusus (Walker 1858), O. (O.) maissouri (Haaf, 1945a) and O. (O.) rimulosus (Haaf, 1957). Lastly, we include an annotated catalogue of the species of the nominotypical subgenus Omorgus known from the Oriental and Palaearctic regions.
Silvaphilus joselmae Daniel, Strmpher Deschodt, new species is diagnosed and described from the Cederberg Mountains, South Africa. The tribal affiliation of Silvaphilus Roets Oberlander, 2010 is ...briefly discussed. We revise some generic characters and update the key for the species and genera in the tribe Endroedyolini Davis, Deschodt Scholtz, 2019. We also provide a distribution map of the two Silvaphilus species.
Mabu Forest in northern-central Mozambique harbours the largest continuous block of rainforest remaining in southern Africa. Also, the region is known for its exceptional levels of biodiversity, ...including a high level of endemism. Several new taxa of plants and animals have been discovered from previous biological expeditions. Last year, we conducted the first dung beetle exploration in the regionwhere almost half of the dung beetle species collected are new to science. In this paper, we describe, diagnose and illustrate Pedaria ricardogutai Daniel, Strmpher & Josso, new species. We compared the new species to the most morphologically similar species, Pedaria sudrei Josso & Prvost, 2003. We also provide an annotated checklist of 17 species of Pedaria Laporte, 1832, recorded from Mozambique, including type localities and distribution records.
A fossil scarabaeoid (Coleoptera: Scarabaeoidea) Mahengea mckayi new genus, new species - the only well-preserved insect fossil and one of only a few insects found at the site - is described from an ...otherwise rich Eocene (~ 45.6 mya) maar Lagerstätte at Mahenge in central nor thern Tanzania. Numerous fossil fishes and plants have been recovered from this site and described. The dear th of insect fossils is surprising considering their richness in other deposits of similar origin and age. We suggest that the rich fish fauna present in the oxygen-rich par ts of the water in the former volcanic crater lake may have scavenged most of the terrestrial insects that fell into the water. Although the fossil described here is undoubtedly that of a member of the Scarabaeoidea, the family placement remains unsure.Significance: We describe the first Eocene fossil scarab from Africa. It is one of only a few scarab fossils from the continent and one of the best-preserved insect (invertebrate) fossils from the deposit.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
Haroldius lyleae Daniel, Strmpher Snll, new species, is described and illustrated from South Africa. The new species can be easily distinguished from other species of the genus by its notable ...triangular clypeus lacking the distinctive mid-anterior indentation and denticles present in other Haroldius Boucomont, 1914 species. Monomorium albopilosum Emery, 1895 (Hymenoptera: Formicidae: Myrmicinae) is recorded as a possible ant host of the new species. Haroldius modestus (Janssens, 1953) is recorded from Zimbabwe for the first time, and Haroldius convexus (Philips Scholtz, 2000) is now recorded from the North West and KwaZulu-Natal Provinces of South Africa as well.
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