New records of Tylokepon with the description of a new species (Epicaridea, Bopyridae, Keponinae)

The parasitic isopod genus Tylokepon is recorded for the first time from the Mariana Islands and Australia. Tylokepon marianensis sp. n. is described from the Mariana Islands, infesting Thusaenys irami (Laurie, 1906). The holotype female differs from other known Tylokepon females by the tri-lobed projection on pereomere 6, almost smooth lateral plates and pleopods, shape of oostegite 1, and widely opened brood pouch. The host is first recorded for bearing bopyrids. The new record of T. bonnieri Stebbing, 1904 from Australia on the type host extends the range of this species from China and India. A table of localities and hosts and a key to all species of Tylokepon are provided

Three new species of abdominal shrimp parasites (Crustacea: Isopoda: Bopyridae Hemiarthrinae) from the Indo-West Pacific

An, Jianmei, Chen, Ruru, Paulay, Gustav (2020): Three new species of abdominal shrimp parasites (Crustacea: Isopoda: Bopyridae Hemiarthrinae) from the Indo-West Pacific. Zootaxa 4845 (2): 264-274, DOI: https://doi.org/10.11646/zootaxa.4845.2.

A review of the genus Apocepon Nierstrasz & Brender à Brandis (Isopoda: Epicaridea: Bopyridae) parasitic on purse crabs (Decapoda: Brachyura: Leucosiidae) from Chinese waters, with description of a new species

Yu, Jianmei An Haiyan, Li, Xinzheng (2006): A review of the genus Apocepon Nierstrasz & Brender à Brandis (Isopoda: Epicaridea: Bopyridae) parasitic on purse crabs (Decapoda: Brachyura: Leucosiidae) from Chinese waters, with description of a new species. Zootaxa 1199: 1-17, DOI: 10.5281/zenodo.264635

High resolution images for 'A review of bopyrids (Crustacea, Isopoda, Bopyridae) parasitic on caridean shrimps (Crustacea, Decapoda, Caridea) from China. (Bulletin of the American Museum of Natural History, no. 399)'

High resolution images for 'A review of bopyrids (Crustacea, Isopoda, Bopyridae) parasitic on caridean shrimps (Crustacea, Decapoda, Caridea) from China. (Bulletin of the American Museum of Natural History, no. 399)' - http://hdl.handle.net/2246/662

FIGURE 3. Allokepon longicauda n in A new species and two new record species of genus Allokepon Markham, 1982 (Isopoda: Epicaridea: Bopyridae) from China

FIGURE 3. Allokepon longicauda n. sp. Female (A–F). A, dorsal view. B, ventral view. C, right maxilliped, external view. D, Barbula, right side. E, right oostegite 1, external view. F, right oostegite 1, internal view. G, left pereopod 7. Male (H, I). H, dorsal view. I, ventral view. Scale 1.00 mm for A, B; 0.42 mm for C, D, E, F; 0.25 mm for G, H, I

A review of the genus Parapenaeon Richardson, 1904 (Crustacea: Isopoda: Bopyridae: Orbioninae), with description of three new species from China

An, Jianmei, Markham, John C., Li, Xinzheng (2015): A review of the genus Parapenaeon Richardson, 1904 (Crustacea: Isopoda: Bopyridae: Orbioninae), with description of three new species from China. Journal of Natural History 49 (41): 2527-2557, DOI: 10.1080/00222933.2015.102322

Paguristione uniuropodus, a new genus and a new species of Pseudioninae infesting hermit crabs from China (Crustacea, Isopoda, Bopyridae)

Paguristione uniuropodus gen. n., sp. n. infests Paguristes sp. in the East China Sea. Paguristione gen. n. differs from the closely related genera Pseudione and Pagurion by its females having indistinct lateral plates on the last two pleomeres and its male with a long tapering pleon of six pleomeres, lacking both pleopoda and uropoda

Statistical properties of solar Hα flare activity

Magnetic field structures on the solar atmosphere are not symmetric distribution in the northern and southern hemispheres, which is an important aspect of quasi-cyclical evolution of magnetic activity indicators that are related to solar dynamo theories. Three standard analysis techniques are applied to analyze the hemispheric coupling (north-south asymmetry and phase asynchrony) of monthly averaged values of solar Hα flare activity over the past 49 years (from 1966 January to 2014 December). The prominent results are as follows: (1) from a global point of view, solar Hα flare activity on both hemispheres are strongly correlated with each other, but the northern hemisphere precedes the southern one with a phase shift of 7 months; (2) the long-range persistence indeed exists in solar Hα flare activity, but the dynamical complexities in the two hemispheres are not identical; (3) the prominent periodicities of Hα flare activity are 17 years full-disk activity cycle and 11 years Schwabe solar cycle, but the short- and mid-term periodicities cannot determined by monthly time series; (4) by comparing the non-parametric rescaling behavior on a point-by-point basis, the hemispheric asynchrony of solar Hα flare activity are estimated to be ranging from several months to tens of months with an average value of 8.7 months. The analysis results could promote our knowledge on the long-range persistence, the quasi-periodic variation, and the hemispheric asynchrony of solar Hα flare activity on both hemispheres, and possibly provide valuable information for the hemispheric interrelation of solar magnetic activity

Statistical properties of solar Hα flare activity

Magnetic field structures on the solar atmosphere are not symmetric distribution in the northern and southern hemispheres, which is an important aspect of quasi-cyclical evolution of magnetic activity indicators that are related to solar dynamo theories. Three standard analysis techniques are applied to analyze the hemispheric coupling (north-south asymmetry and phase asynchrony) of monthly averaged values of solar Hα flare activity over the past 49 years (from 1966 January to 2014 December). The prominent results are as follows: (1) from a global point of view, solar Hα flare activity on both hemispheres are strongly correlated with each other, but the northern hemisphere precedes the southern one with a phase shift of 7 months; (2) the long-range persistence indeed exists in solar Hα flare activity, but the dynamical complexities in the two hemispheres are not identical; (3) the prominent periodicities of Hα flare activity are 17 years full-disk activity cycle and 11 years Schwabe solar cycle, but the short- and mid-term periodicities cannot determined by monthly time series; (4) by comparing the non-parametric rescaling behavior on a point-by-point basis, the hemispheric asynchrony of solar Hα flare activity are estimated to be ranging from several months to tens of months with an average value of 8.7 months. The analysis results could promote our knowledge on the long-range persistence, the quasi-periodic variation, and the hemispheric asynchrony of solar Hα flare activity on both hemispheres, and possibly provide valuable information for the hemispheric interrelation of solar magnetic activity