scholarly journals CHANGES IN THE COLOUR OF BUTTERFLIES

1902 ◽  
Vol 34 (4) ◽  
pp. 94-94
Author(s):  
A. Radcliffe. Grote

While studying the specializations of the wing in the Papilionides, the general results of which are published in the Proc. Am. Philosophical Society, Jan., 1899, I found that Iphiclides, Ajax, Marcellus, etc., differed so strongly from the type of Turnus as to be generically separable. Ajax is, in fact, allied to species having a greenish or yellowish white ground colour, from South America and the Old World, while Turnus is evidently related to the black North American forms, Troilus, etc., with which it flies. This fact enables me to draw the probable conclusion that Glaucus represents the original colour of the species, which, so to speak, is turning into Turnus, The black ♀ Glaucus is the more conservative whereas the males are already, with very rare exceptions, of the yellow tape of Turnus. It is different with certain cases of so-called “melanism,” now spreading in Europe, as Eubyja var. Doubledayaria and Aglia vars. fere-nigra and melaina. Here the original ground colour is changing to black indifferently in both sexes.

2013 ◽  
Vol 68 (2) ◽  
pp. 145-179
Author(s):  
John Cyril Barton

This essay is the first to examine Melville’s “The Town-Ho’s Story” (Chapter 54 of Moby-Dick [1851]) in relation to W. B. Stevenson’s then-popular-but-now-forgotten British travel narrative, Twenty Years’ Residence in South America (1825). Drawing from suggestive circumstances and parallel action unfolding in each, I make a case for the English sailor’s encounter with the Spanish Inquisition in Lima as important source material for the Limanian setting that frames Melville’s tale. In bringing to light a new source for Moby-Dick, I argue that Melville refracts Stevenson’s actual encounter with the Inquisition in Lima to produce a symbolic, mock confrontation with Old-World authority represented in the inquisitorial Dons and the overall context of the story. Thus, the purpose of the essay is twofold: first, to recover an elusive source for understanding the allusive framework of “The Town-Ho’s Story,” a setting that has perplexed some of Melville’s best critics; and second, to illuminate Melville’s use of Lima and the Inquisition as tropes crucial for understanding a larger symbolic confrontation between the modern citizen (or subject) and despotic authority that plays out not only in Moby-Dick but also in other works such as Mardi (1849), White-Jacket (1850), “Benito Cereno” (1855), Clarel (1876), and The Confidence-Man (1857), wherein the last of which the author wrote on the frontispiece of a personal copy, “Dedicated to Victims of Auto da Fe.”


Geobios ◽  
1981 ◽  
Vol 14 (4) ◽  
pp. 493-524 ◽  
Author(s):  
M.O. Woodburne ◽  
B.J. Macfadden ◽  
M.F. Skinner
Keyword(s):  

1989 ◽  
Vol 20 (1) ◽  
pp. 1-14 ◽  
Author(s):  
Jan Klimaszewski

AbstractA review of David Sharp's types of Aleochara from Mexico, and Central and South America is presented. Nineteen species are treated here, one of which is described as new (A. felixiana), seven are redescribed [A. angusticeps Sharp, A. funestior Sharp, A. mexicana Sharp, A. oxypodia Sharp, A. simulatrix Sharp, A. gracilis (Sharp), and A. duplicata (Sharp)] and one [A. miradoris Sharp] is put in synonymy under A. mexicana Sharp. The remaining ten species were treated in my 1984-revision of North American Aleochara but are here included in a checklist with references to description, redescription, and illustrations. Some additional information is provided for previously synonymized A. torquata Sharp (= A. sallaei Sharp), and for A. quadrata Sharp. Illustrations of genitalic structures of both sexes are provided for the first time for the seven redescribed species. Lectotypes are designated for A. angusticeps, A. duplicata, A. funestior, A. mexicana, and A. oxypodia.


ZooKeys ◽  
2020 ◽  
Vol 984 ◽  
pp. 59-81
Author(s):  
Cory S. Sheffield ◽  
Ryan Oram ◽  
Jennifer M. Heron

The bumble bee (Hymenoptera, Apidae, Bombini, Bombus Latreille) fauna of the Nearctic and Palearctic regions are considered well known, with a few species occurring in both regions (i.e., with a Holarctic distribution), but much of the Arctic, especially in North America, remains undersampled or unsurveyed. Several bumble bee taxa have been described from northern North America, these considered either valid species or placed into synonymy with other taxa. However, some of these synonymies were made under the assumption of variable hair colour only, without detailed examination of other morphological characters (e.g., male genitalia, hidden sterna), and without the aid of molecular data. Recently, Bombus interacti Martinet, Brasero & Rasmont, 2019 was described from Alaska where it is considered endemic; based on both morphological and molecular data, it was considered a taxon distinct from B. lapponicus (Fabricius, 1793). Bombus interacti was also considered distinct from B. gelidus Cresson, 1878, a taxon from Alaska surmised to be a melanistic form of B. lapponicus sylvicola Kirby, 1837, the North American subspecies (Martinet et al. 2019). Unfortunately, Martinet et al. (2019) did not have DNA barcode sequences (COI) for females of B. interacti, but molecular data for a melanistic female specimen matching the DNA barcode sequence of the holotype of B. interacti have been available in the Barcodes of Life Data System (BOLD) since 2011. Since then, additional specimens have been obtained from across northern North America. Also unfortunate was that B. sylvicola var. johanseni Sladen, 1919, another melanistic taxon described from far northern Canada, was not considered. Bombus johanseni is here recognized as a distinct taxon from B. lapponicus sylvicola Kirby, 1837 (sensuMartinet et al. 2019) in the Nearctic region, showing the closest affinity to B. glacialis Friese, 1902 of the Old World. As the holotype male of B. interacti is genetically identical to material identified here as B. johanseni, it is placed into synonymy. Thus, we consider B. johanseni a widespread species occurring across arctic and subarctic North America in which most females are dark, with rarer pale forms (i.e., “interacti”) occurring in and seemingly restricted to Alaska. In addition to B. johanseni showing molecular affinities to B. glacialis of the Old World, both taxa also inhabit similar habitats in the arctic areas of both Nearctic and Palearctic, respectively. It is also likely that many of the specimens identified as B. lapponicus sylvicola from far northern Canada and Alaska might actually be B. johanseni, so that should be considered for future studies of taxonomy, distribution, and conservation assessment of North American bumble bees.


2019 ◽  
Vol 189 (2) ◽  
pp. 635-656 ◽  
Author(s):  
Ane De Celis ◽  
Iván Narváez ◽  
Francisco Ortega

Abstract Eusuchia is a crocodyliform clade with a rich and diverse fossil record dating back to the Mesozoic. There are several recent studies that analyse crocodyliform palaeodiversity over time, but none of them focuses exclusively on eusuchians. Thus, we estimated subsampled eusuchian palaeodiversity species dynamics over time not only at a global scale, but also by continents and main crocodylian lineages (Alligatoroidea, Crocodyloidea and Gavialoidea). These estimates reveal complex spatiotemporal palaeodiversity patterns, in which two maxima can be detected: the first during the Palaeocene and the second, which is also the biggest, in the middle-late Miocene. The Palaeocene shift is related to a North American alligatoroid diversification, whereas the middle–late Miocene maximum is related to a diversification of the three main Crocodylia lineages in Gondwanan land masses, but especially in South America. Additionally, a model-based study using generalized least squares was carried out to analyse the relationships between different abiotic and sampling proxies and eusuchian palaeodiversity. The results show that palaeotemperature is the most important factor amongst the analysed proxies, in accordance with previous studies. However, the results suggest that, along with palaeotemperature, other abiotic and/or biotic factors might also be driving eusuchian palaeodiversity dynamics.


2018 ◽  
Vol 120 (1) ◽  
pp. 134-152 ◽  
Author(s):  
David R. Horton ◽  
Eugene Miliczky ◽  
Tamera M. Lewis ◽  
W. Rodney Cooper ◽  
Timothy D. Waters ◽  
...  
Keyword(s):  

1995 ◽  
Vol 51 (3) ◽  
pp. 393-415 ◽  
Author(s):  
James Schofield Saeger

Because of the power of film, movies with historical themes affect public perceptions of the past more deeply than do scholarly reconstructions. Film makers and historians search for meaning in separate ways, but their quests can converge. Examples of different approaches to similar destinations are found in a newer film and older historical views of Catholic missions in South America. Released in 1986, The Mission, directed by Roland Joffé with a screenplay by Robert Bolt, displays paternalistic attitudes like those of an earlier generation of North American academic historians. The film's voice is a white European distortion of Native American reality. This essay will examine that voice, offer alternative explanations of historical events, and suggest a research agenda for future study of the Guarani missions of Paraguay, often mentioned in surveys but seldom studied by North American historians.


Author(s):  
Valeria Marina Valle ◽  
Caroline Irene Deschak ◽  
Vanessa Sandoval-Romero

International migration flows have long been a defining feature of the Americas and have evolved alongside political and phenomenological shifts between 2009 and 2018, creating new patterns in how, when, and why people move. Migration is a determinant of health, and for the nations involved, regional changes create new challenges to defend the universal right to health for migrants. This right is repeatedly guaranteed within the global agenda, such as in the 1948 Universal Declaration of Human Rights by the United Nations; the 1966 International Covenant on Economic, Social, and Cultural Rights; and the 2015 United Nations Sustainable Development Goals (SDGs), especially SDG 3 regarding health and well-being, and SDG 10, which aims to reduce inequalities within and among countries. The 2018 Global Compact for Safe, Orderly and Regular Migration confirms a worldwide partnership highlighting protection of migrants’ right to health and services. The literature reviewed on migration and health in the Americas between 2009 and 2018 identifies two distinct publication periods with different characteristics in the Central and North American subregions: 2009 to 2014, and 2015 to 2018. The first period is characterized by an influx of young adult migrants from Central America to the United States who generally traveled alone. During the second period, the migration flow includes other major groups, such as unaccompanied minors, pregnant women, disabled people, people from the LGBTIQ+ community, and whole families; some Central Americans drew international attention for migrating in large groups known as “caravans.” In South America, the 2010–2015 period shows three defining tendencies: intensification of intra-regional cross-border migration (with an 11% increase in South American migrants from 2010 to 2015 and approximately 70% of intra-subregional migration), diversification of countries of origin and extra-regional destination, and the persistence of extra-continental emigration. Social determinants of health have a foundational relevance to health and well-being for migrants, such as age, housing, health access, education, and policy environment. Guiding theories on migration and health include Push-and-Pull Theory, Globalization Theory, Transnationalism, Relational Cultural Theory, and Theory of Assimilation. Migration and health was analyzed through the lens of five disciplines (Management, Social Work, Communication, Education, Information Science & Library Science, Law): clinical medicine, social sciences, health (general), professional fields, and psychology. There is an overrepresentation of literature in clinical medicine, demonstrating a strong bias towards production in the United States. Another gap perceived in the literature is the minimal knowledge production in South America and the Caribbean, and a clear bias towards publication in the North American continent. At the regional level, the Pan American Health Organization (PAHO)’s agenda serves to highlight areas of success and opportunities for future research, particularly in two areas: strengthening partnerships, networks, and multi-country frameworks; and adopting policies, programs, and legal frameworks to promote and protect the health of migrants. As these strategic lines of action aim to provide the basis for decisions regarding migrant health in the region, they should be considered two important avenues for further academic exploration.


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