Taxonomy of the Indo-Malayan presocial potter wasp genus Calligaster de Saussure (Hymenoptera, Vespidae, Eumeninae)

Abstract

The taxonomic history and current taxonomic status of the presocial potter wasp genus Calligaster de Saussure, 1852, at generic and species levels are reviewed. The hitherto-unknown female of Calligaster viridipennis Giordani Soika, 1960, is described based on specimens newly collected in Central and Southeast Sulawesi. A key to species is also provided.

The Eumeninae (Hymenoptera, Vespidae) of Hong Kong (China), with description of two new species, two new synonymies and a key to the known taxa

“…Identifications were made using a stereomicroscope (Nikon SMZ1500), according to the descriptions or keys of Schulthess (1934), Yamane (1990), Giordani Soika (1994), Girish , Girish Kumar and Sharma (2013), Nguyen (2015), Nguyen and Carpenter (2016), Girish Kumar et al (2016), Girish Kumar et al 2017, Li and Chen (2014a, b, 2016a, Nugroho et al (2016), Li and Carpenter (2018), Ma et al (2017), Tan et al (2018a), Tan et al 2018b and Li and Carpenter 2019 and comparing the Hong Kong material with specimens deposited in the American Museum of Natural History (USA).…”

The Effect of Sr-CoFe2O4 Nanoparticles with Different Particles Sized as Additives in CIP-Based Magnetorheological Fluid

“…As such, the sedimentation stability of MRF can be increased by either modifying the shape of the particles [23], coating the particles with surfactants [24], or introducing nanoparticles as an additive [25]. Of these three methods, introducing nanoparticles as additives has been found to be the most effective and efficient way of increasing the sedimentation stability of MRF [26].…”

“…Additionally, the MRF CIP+Sr-CoFe 2 O 4 -T300 sample had higher dispersion stability than the MRF CIP+Sr-CoFe 2 O 4 -T400 sample. This was because the particles of the Sr-CoFe 2 O 4 -T300 sample, which were smaller, have a higher Brownian motion than the particles of the Sr-CoFe 2 O 4 -T400 sample[26].…”