1,681 research outputs found
On the huntsman spider genera Sparianthina Banks, 1929 and Anaptomecus Simon, 1903 from South and Central America (Araneae, Sparassidae)
No full textThe huntsman spider genera Sparianthina Banks, 1929 and Anaptomecus Simon, 1903 are reviewed. The type species of Sparianthina, Sparianthina selenopoides Banks, 1929, is redescribed, illustrated, and recorded from Costa Rica for the first time; a lectotype and paralectotype are designated. Three species are transferred to the genus: Sparianthina pumilla (Keyserling, 1880) comb. n. from Heteropoda Latreille, 1804 (lectotype and paralectotype are designated), Sparianthina rufescens (Mello-Leitão, 1940) comb. n. from Anaptomecus and Sparianthina milleri (Caporiacco, 1955) comb. n. from Macrinus Simon, 1887. The ♂ of S. rufescens (Mello-Leitão, 1940) comb. n. and the ♀ of S. milleri comb. n. are described for the first time. Three new species are described: Sparianthina adisi sp. n., S. deltshevi sp. n., and S. saaristoi sp. n. The male and female of Anaptomecus longiventris Simon, 1903 are described for the first time and the species is recorded from Panama for the first time. Two new species are described: Anaptomecus temii sp. n. and A. levyi sp. n. Keywords: Taxonomy, re-description, transfer, revie
Taxonomic revision, molecular phylogeny and zoogeography of the huntsman spider genus Eusparassus (Araneae: Sparassidae)
No full textThe spider genus Eusparassus Simon, 1903 (Araneae: Sparassidae: Eusparassinae; stone huntsman spider) is revised worldwide to include 30 valid species distributed exclusively in Africa and Eurasia. The type species E. dufouri Simon, 1932 is redescribed and a neotype is designated from Portugal. An extended diagnosis for the genus is presented. Eight new species are described: Eusparassus arabicus Moradmand, 2013 (male, female) from Arabian Peninsula, E. educatus Moradmand, 2013 (male, female) from Namibia, E. reverentia Moradmand, 2013 (male, female) from Burkina Faso and Nigeria, E. jaegeri Moradmand, 2013 (male, female) from South Africa and Botswana, E. jocquei Moradmand, 2013 (male, female) from Zimbabwe, E. borakalalo Moradmand, 2013 (female) from South Africa, E. schoemanae Moradmand, 2013 (male, female) from South Africa and Namibia and E. mesopotamicus Moradmand and Jäger, 2012 (male and female) from Iraq, Iran and Turkey. 22 species are re-described six of them are transferred from the genus Olios Walckenaer, 1837. Six species-groups are proposed: the dufouri-group [8 species: E. dufouri, E. levantinus Urones, 2006, E. barbarus (Lucas, 1846), E. atlanticus Simon, 1909, E. syrticus Simon, 1909, E. oraniensis (Lucas, 1846), E. letourneuxi (Simon, 1874), E. fritschi (Koch, 1873); Iberian Peninsula to parts of north-western Africa], walckenaeri-group [3 species: E. walckenaeri (Audouin, 1826), E. laevatus (Simon, 1897), E. arabicus; eastern Mediterranean to Arabia and parts of north-eastern Africa], doriae-group [7 species: E. doriae (Simon, 1874), E. kronebergi Denis, 1958, E. maynardi (Pocock, 1901), E. potanini (Simon, 1895), E. fuscimanus Denis, 1958, E. oculatus (Kroneberg, 1846) and E. mesopotamicus; Middle East to Central and South Asia], vestigator-group (3 species: E. vestigator (Simon, 1897), E. reverentia, E. pearsoni (Pocock, 1901); central to eastern Africa and an isolated area in NW India], jaegeri-group [4 species: E. jaegeri, E. jocquei, E. borakalalo, E. schoemanae; southern and south-eastern Africa], tuckeri-group [2 species: E. tuckeri (Lawrence, 1927), E. educatus; south-western Africa). Two species, E. pontii Caporiacco, 1935 and E. xerxes (Pocock, 1901) cannot be placed in any of the above groups. Two species are transferred from Eusparassus to Olios: O. flavovittatus (Caporiacco, 1935) and O. quesitio Moradmand, 2013. 14 species are recognized as misplaced in Eusparassus, thus nearly half of the described species prior to this revision were placed mistakenly in this genus. Neotypes are designated for E. walckenaeri from Egypt, E. barbarus, E. oraniensis and E. letourneuxi (all three from Algeria) to establish their identity. The male and female of Cercetius perezi Simon, 1902, which was known only from the immature holotype, are described for the first time. It is recognized that the monotypic and little used generic name Cercetius Simon, 1902 — a species, which had been known only from the immature holotype — as a synonym of the widely used name Eusparassus. The case proposal 3596 (conservation of name Eusparassus) is under consideration by ICZN.
The first comprehensive molecular phylogeny of the family Sparassidae with focus on the genus Eusparassus is investigated using four molecular markers (mitochondrial COI and 16S; nuclear H3 and 28S). The monophyly of Eusparassus and the dufouri, walckenaeri and doriae species-groups are recovered with the latter two groups more closely related. The monophyly of the tuckeri-group is not supported and the position of E. jaegeri as the only available member of the jaegeri-group is not resolved within the Eusparassus clade. DNA samples of the vestigator-group were not accessible for this study. The origination of the genus Eusparassus around 70 million years ago (MA) is estimated according to molecular clock analyses. Using this recent result in combination with some biogeographic and geological data, the Namib Desert is proposed as the place of ancestral origin for Eusparassus and putative Eusparassinae genera.
Further analyses are done on the phylogenetic relationships of Sparassidae and its subfamilies. The Eusparassinae are not confirmed as monophyletic, with the two original genera Eusparassus and Pseudomicrommata in separate clades and only the latter clusters with most other assumed Eusparassinae, here termed the "African clade". Monophyly of the subfamilies Sparianthinae, Heteropodinae sensu stricto, Palystinae and Deleninae is recovered. The Sparianthinae are supported as the most basal clade, diverging considerably early (143 MA) from all other Sparassidae. The Sparassinae and genus Olios are found to be polyphyletic. The Sparassidae are confirmed as monophyletic and as most basal group within the RTA-clade. The divergence time of Sparassidae from the RTA-clade is estimated with 186 MA in the Jurassic. No affiliation of Sparassidae to other members of the "Laterigradae" (Philodromidae, Selenopidae and Thomisidae) is observed, thus the crab-like posture of this group was proposed a result of convergent evolution. Only the families Philodromidae and Selenopidae are found members of a supported clade. Including a considerable amount of RTA-clade representatives, the higher-level clade Dionycha is not but monophyly of the RTA-clade itself is supported
Johnny Huntsman: An American Superhero
No full textabstract: Children's book on life and career of Governor Jon Huntsman with civics lessons tied into story. Context paper explaining political science and communication theories as well as background on creative project
Palystes kreutzmanni sp. n. – a new huntsman spider species from fynbos vegetation in Western Cape Province, South Africa (Araneae, Sparassidae, Palystinae)
No full textPalystes kreutzmanni sp. n. is described from habitats close to Kleinmond, in the Western Cape Province, South Africa. Spiders of this new species live in the typical fynbos vegetation of the Western Cape region. They build retreats between apical leaves of Leucadendron bushes. The systematic position of Palystes kreutzmanni sp. n. is discussed. Male and female show characters of different species groups, especially the female copulatory organ seems to be unique within the genus Palystes L. Koch, 1875
A semi-quantitative risk assessment method in process plants: Huntsman tioxide Europe-Ternate plant experience
No full textThe purpose of the present work was to develop a methodology for the risk assessment in workplace for Huntsman Ternate plant, pursuant the Legislative Decree n. 81/08 and subsequent amendments. Huntsman internal procedure focused on the processes risk management, and it was developed in order to homogeneously classify accident scenarios in all Huntsman plants; but it wasn't effective to assess the hazards related to work operations and workplace. The first kind of events are heavier than occupational accidents, as well as less frequent; therefore, the application of Huntsman procedure as it was would have provoked a loss of significance of results obtained. Thus, it was elaborated a semi quantitative method of risk assessment in workplace, combining the techniques derived by the national regulations and the company procedure, in order to reach a more effective method to evaluate the risks and communicate to the associates the risks evaluation outputs
Representation of the past in the huntsman: winter war movie (2016)
No full textThis research was about the representation analysis which aimed to find out the way of author recalled changes in the characters of the huntsman and snow white in huntsman movie.x, 80 page
Metandrocarpa taylori Huntsman 1912
No full text<i>Metandrocarpa taylori</i> Huntsman, 1912 <p>Figure 11C</p> <p>IHAK 10 BHAK 0537 UF 2457. Fifth Beach cove boulders, low intertidal. Three clumps.</p> <p>IHAK 65 BHAK 3246 UF 2564. East side of North Beach boulder field, low intertidal.</p> <p> MHAK 14 BHAK 0623 UF 2474. Tippy Rock Bay low intertidal with <i>B. villosa</i> and <i>P. annectens</i>.</p> <p>ZHAK 35 Sasquatch Commode tidepool.</p> <p> The zooids of this colonial species are very similar in size and morphology to the previous species, <i>M. dura</i>, but in <i>M. taylori</i> the zooids are connected only by stolons. Each zooid is completely covered by its own tunic. The stolons may be very short and the zooids crowded but are always separate. The tunic is bright orangeish red and always completely smooth and devoid of epibionts. See Huntsman (1912b) and Van Name (1945) for detailed morphology. This species is common from Alaska to southern California (Huntsman 1912b; Ritter & Forsyth 1917; Van Name 1945; Abbott & Newberry 1980; O’Clair & O’Clair 1998; Lamb & Hanby 2005).</p>Published as part of <i>Lambert, Gretchen, 2019, The Ascidiacea collected during the 2017 British Columbia Hakai MarineGEO BioBlitz, pp. 401-436 in Zootaxa 4657 (3)</i> on page 422, DOI: 10.11646/zootaxa.4657.3.1, <a href="http://zenodo.org/record/3371886">http://zenodo.org/record/3371886</a>
Lake Ohrid, Albania, provides an exceptional multi-proxy record of environmental changes during the last glacial-interglacial cycle
No full textMulti-proxy analyses on core JO2004-1 recovered from Lake Ohrid (40°55.000 N, 20°40.297E, 705 m a.s.l.)
provide the first environmental and climate reconstruction in a mountainous area in Southern Europe over
the last 140,000 years. The response of both lacustrine and terrestrial environments to climate change has
been amplified by the peculiar geomorphological and hydrological setting, with a steep altitudinal gradient
in the catchment and a karstic system feeding the lake. The karstic system was active during interglacials,
leading to high carbonate production in the lake, and blocked during glacials as a result of extremely cold
climate conditions with permafrost in the mountains. At the Riss–Eemian transition (Termination 2) the
increase in lacustrine productivity predated forest expansion by about 10,000 years. In contrast, the Late
Glacial–Holocene transition (Termination 1) was characterized by the dramatic impact of the Younger Dryas,
which initially prevented interglacial carbonate production and delayed its maximum until the mid-
Holocene. In contrast, forest expansion was progressive, starting as early as ca. 38,000 ago. The proximity of
high mountains and the probable moderating lake effect on local climate conditions promoted forest
expansion, and contributed to make the surroundings of Lake Ohrid favourable to forest refugia during the
last glacial, usually steppic, period. Our study of sedimentology, mineralogy, geochemistry, magnetics,
palynology and isotopes illustrates the non-linear response of terrestrial and lacustrine ecosystems to similar
climate events, and demonstrates the potential of Lake Ohrid as an excellent paleoclimatic archive during the Quaternary
lspitler/huntsman-dust: First release of Huntsman power spectrum dust code
No full text<p>Code authored by @amanchokshi and reviewed by Lee Spitler for creating:</p>
<ul>
<li>fake images populated with dust clouds</li>
<li>mask point sources and large galaxies in astronomical images</li>
<li>compute power spectrum for input images</li>
<li>produce diagnostic plots illustrating the above functionality</li>
</ul>
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