On the taxonomy of Negeta semialba Hampson, 1918 with descriptions of two new Leucobaeta László, Ronkay & Witt, 2010 species (Lepidoptera, Nolidae, Nolinae)

Zootaxa ◽  
2022 ◽  
Vol 5091 (1) ◽  
pp. 56-68
Author(s):  
GYULA M. LÁSZLÓ
Keyword(s):  
East Africa ◽  
Sibling Species ◽  
Morphological Analysis ◽  
Genetic Distances ◽  
West African ◽  
Taxonomic Position ◽  
The West ◽  
Male Adult ◽  
Unknown Male

The taxonomic position of the West African Negeta semialba Hampson, 1918 is revised and the species is transferred from the genus Negeta Walker, 1862 of Westermanniinae to Leucobaeta László, Ronkay & Witt, 2010 of Nolinae: Leucobaeta semialba (Hampson, 1918) comb. n., based on morphological analysis. The hitherto unknown male adult and genitalia of both sexes are described and illustrated. Leucobaeta semialba is compared to the superficially similar Afrotropical Negeta mesoleuca (Holland, 1894) and N. ruficeps (Hampson, 1902); two sibling species from East Africa and Madagascar are described as new to science: L. smithi and L. malagassa spp. n. Pairwise genetic distances of COI-5P sequences between the taxa are provided.  

scholarly journals Internal Intraseasonal Variability of the West African Monsoon in WRF

2017 ◽  
Vol 30 (15) ◽  
pp. 5815-5833 ◽  
Author(s):  
Ghassan J. Alaka ◽  
Eric D. Maloney
Keyword(s):  
East Africa ◽  
Large Scale ◽  
Intraseasonal Variability ◽  
West African Monsoon ◽  
West African ◽  
Boreal Summer ◽  
Kelvin Wave ◽  
The West ◽  
African Monsoon ◽  
External Influences

The West African monsoon (WAM) and its landmark features, which include African easterly waves (AEWs) and the African easterly jet (AEJ), exhibit significant intraseasonal variability in boreal summer. However, the degree to which this variability is modulated by external large-scale phenomena, such as the Madden–Julian oscillation (MJO), remains unclear. The Weather Research and Forecasting (WRF) Model is employed to diagnose the importance of the MJO and other external influences for the intraseasonal variability of the WAM and associated AEW energetics by removing 30–90-day signals from initial and lateral boundary conditions in sensitivity tests. The WAM produces similar intraseasonal variability in the absence of external influences, indicating that the MJO is not critical to produce WAM variability. In control and sensitivity experiments, AEW precursor signals are similar near the AEJ entrance in East Africa. For example, an eastward extension of the AEJ increases barotropic and baroclinic energy conversions in East Africa prior to a 30–90-day maximum of perturbation kinetic energy in West Africa. The WAM appears to prefer a faster oscillation when MJO forcing is removed, suggesting that the MJO may serve as a pacemaker for intraseasonal oscillations in the WAM. WRF results show that eastward propagating intraseasonal signals (e.g., Kelvin wave fronts) are responsible for this pacing, while the role of westward propagating intraseasonal signals (e.g., MJO-induced Rossby waves) appears to be limited. Mean state biases across the simulations complicate the interpretation of results.

Cytotaxonomic revision of the Simulium sanctipauli subcomplex (Diptera: Simuliidae) in Guinea and the adjacent countries including descriptions of two new species

1993 ◽  
Vol 83 (2) ◽  
pp. 171-186 ◽  
Author(s):  
D.A Boakye ◽  
R.J Post ◽  
F.W Mosha ◽  
D.P Surtees ◽  
R.H.A Baker
Keyword(s):  
New Species ◽  
Sierra Leone ◽  
Sibling Species ◽  
Control Programme ◽  
West African ◽  
The West ◽  
Two New Species ◽  
Chromosomal Data ◽  
Onchocerciasis Control

AbstractThe Simulium sanctipauli Vajime & Dunbar subcomplex of the West African S. damnosum Theobald complex is cytotaxonomically revised for the western part of the Onchocerciasis Control Programme area. The subcomplex is defined and a chromosomal key provided for the identification of the sibling species and forms recognized. Two sibling species are newly described, S. leonense Boakye, Post & Mosha (Sierra Leone) and S. konkourense Boakye, Post, Mosha & Quilleévéré (Guinea and Sierra Leone). Detailed chromosomal data are provided as warranty for the conclusions about the specific or infraspecific status of the taxa recognized.

The Puzzling Paradox Presented within the African Supranational Judicial Institutions: The ECOWAS Court of Justice

2020 ◽  
Vol 28 (Supplement) ◽  
pp. 86-109
Author(s):  
Kehinde Ibrahim
Keyword(s):  
Human Rights ◽  
West African ◽  
African Region ◽  
The West ◽  
Political Will ◽  
National Courts ◽  
Court Of Justice ◽  
West African Region

The judgments of the ECOWAS Court, which are final and immediately binding, are vital for the realisation of ECOWAS aims and objectives. The enforcement of its judgments is particularly important in the case of individuals whose enjoyment of fundamental human rights, as guaranteed under the ECOWAS Community laws, is dependent on effective enforcement. Yet, an existential puzzling paradox emanates through a poor record in the implementation of the ECOWAS Court's judgments. This problem, which is not limited to the West African region deserves scrutiny and concrete proposals. Legal and political considerations surface in assessing the existence of this paradox, and despite the lack of a consistent political will, to implement the decisions of ECOWAS Court relevant judicial actors have roles to play. National courts could take a bolder approach in complementing the work of the ECOWAS Court. The ECOWAS Court itself could put in place concrete mechanisms and adopt certain practices to address this poor record of non-implementation. It is yet to be seen how substantive mechanisms would work in practice.

Development and Operation of Ebola Diagnostic Laboratories Led By Public Health England in Sierra Leone during the West African Ebola Outbreak 2013-2015

2016 ◽  
Vol 1 (4) ◽  
Author(s):  
Daniel Bailey ◽  
Jane Shallcross ◽  
Christopher H. Logue ◽  
Simon A. Weller ◽  
Liz Evans ◽  
...  
Keyword(s):  
Public Health ◽  
Sierra Leone ◽  
West African ◽  
The West

Cryptic Lineages of Nigerian Agama (Squamata: Agamidae) within the West African Radiation

2018 ◽  
Vol 25 (2) ◽  
pp. 97 ◽  
Author(s):  
Lotanna M. Nneji ◽  
Adeniyi C. Adeola ◽  
Fang Yan ◽  
Agboola O. Okeyoyin ◽  
Ojo C. Oladipo ◽  
...  
Keyword(s):  
West African ◽  
The West
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