124,930 research outputs found
Stereus Wollaston 1857
No full textGenus Stereus Wollaston, 1857 Stereus Wollaston, 1857: 148. Type species: Stereus cercyonides Wollaston, 1857, by monotypy. Revised by Daffner (1983), Perkovsky (1991). Deltocnemis J. Sahlberg, 1886: 87. Type species: Deltocnemis humatus J. Sahlberg, 1886, by monotypy. As genus, Daffner (1983); as subgenus of Stereus, Perkovsky (1991). Pseudotriarthron Normand, 1938: 346. Type species: Pseudotriarthron numidicum Normand, 1938, by monotypy. Synonymized by Daffner (1983). Diagnosis. Antennal club large, 3-segmented; mandibles elongate, strongly protruding, apices entire; labrum emarginate; epistomal suture not carinate, strongly marked laterally, faintly indicated medially; clypeus lightly sclerotized; eyes not protuberant; post-ocular tempora not developed; gular sutures widely separated at base, convergent to base of submentum, narrowly separated apically, with a suture separating gula and submentum; mesoventrite weakly oblique, not carinate; mesocoxae narrowly separated by mesoventral process; tarsi very slender. Distribution and diversity. The genus is known to contain four Palearctic species (Daffner 1983, Newton 1998), and the following new species from the Nearctic.Published as part of Peck, Stewart B. & Cook, Joyce, 2009, Review of the Sogdini of North and Central America (Coleoptera: Leiodidae: Leiodinae) with descriptions of fourteen new species and three new genera, pp. 1-74 in Zootaxa 2102 (1) on pages 25-26, DOI: 10.11646/zootaxa.2102.1.1, http://zenodo.org/record/531088
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Pentarthrum Wollaston 1854
No full textPentarthrum Wollaston 1854 Pentarthrum Wollaston 1854: 129. Type species Pentarthrum huttoni Wollaston 1854: 130 by monotypy. Diagnosis. Species of Pentarthrum can be recognized by the following characters: Body more or less narrow, nearly parallel, closely sculptured, nearly free from scales or pubescence, slightly shining; head conical, somewhat constricted behind eyes; eyes prominent; distance between eyes and post-ocular constriction much shorter than the diameter of eye; rostrum more or less subparallel or slightly expanded towards apex in dorsal view, longer than head; antenna almost medially inserted; scape reaching middle of eye, funicle five segments; club expanded, rounded at apex, first article of funicle distinctly narrower than club, second article longer than the third; pronotum longer than wide, conical, narrowed forward, constricted at apex; scutellum conspicuous; third tarsal joint slightly expanded, cordate, excavate dorsally but not lobate (Wollaston 1854, 1873a, 1873 b; Voss 1955; Folwaczny 1960, 1973; Morimoto 1973; Anderson 2002). Diversity. Pentarthrum was established in 1854 by Wollaston based on the species P. huttoni from England. In 1936, Csiki reported that Pentarthrum contained 66 species from around the world. Presently 50 species are recognized in the genus. Here provided is a checklist to the 38 species belonging to this genus which were described from 1854 to 1936. as well as the additional 11 species described from 1936 to 1961. Since 1961 no additional species have been described other than the one described herein.Published as part of Omar, Youssef M., Zhang, Runzhi & Davis, Steven R., 2010, Description of a new species of Pentarthrum Wollaston (Coleoptera: Curculionidae: Cossoninae) from China with an annotated checklist to species of the World, pp. 47-60 in Zootaxa 2629 on page 48, DOI: 10.5281/zenodo.19829
Microlestes negrita Wollaston 1854
No full text<i>Microlestes negrita</i> Wollaston, 1854 <p> <b> <i>Microlestes negrita negrita</i> Wollaston, 1854 Material studied.</b> “Vodno, 12.06.1938, Z. Karaman”, 1 s. (MMNH). <b>Distribution.</b> 17.</p> <p> <b>Notes.</b> New species for the fauna of Macedonia.</p>Published as part of <i>Hristovski, Slavčo & Guéorguiev, Borislav, 2015, Annotated catalogue of the carabid beetles of the Republic of Macedonia (Coleoptera: Carabidae), pp. 1-190 in Zootaxa 4002 (1)</i> on page 109, DOI: 10.11646/zootaxa.4002.1.1, <a href="http://zenodo.org/record/238945">http://zenodo.org/record/238945</a>
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
High resolution neutron Larmor diffraction using superconducting magnetic Wollaston prisms
No full textThe neutron Larmor diffraction technique has been implemented using superconducting magnetic Wollaston prisms in both single-arm and double-arm configurations. Successful measurements of the coefficient of thermal expansion of a single-crystal copper sample demonstrates that the method works as expected. The experiment involves a new method of tuning by varying the magnetic field configurations in the device and the tuning results agree well with previous measurements. The difference between single-arm and double-arm configurations has been investigated experimentally. We conclude that this measurement benchmarks the applications of magnetic Wollaston prisms in Larmor diffraction and shows in principle that the setup can be used for inelastic phonon line-width measurements. The achievable resolution for Larmor diffraction is comparable to that using Neutron Resonance Spin Echo (NRSE) coils. The use of superconducting materials in the prisms allows high neutron polarization and transmission efficiency to be achieved
Lusus bifidum Wollaston
No full text<p>B. Spicant (L.) Roth</p> <p>Cat. 414.</p> <p>Bis 2500m.</p> <p>l: Haut de Morges (J.); Vionnaz (J.); Les Gietes bei St-Maurice (Marietan); ob Verossaz (J.); Mont-Ravoire (F.); LaGieteobAlesse (J.). - 3: Ob den Mayens du Revers beiFionnay,1450 m (Zwicky); ob Grimentz (Beauverd); Ayer (Marietan); Alpe de la Le ob Zinal, 2500m (idem); Simplon: Taverna (Wolf), Hobschen (Besse). - 3a: Rossboden (Chiovenda). - 4: Moosfluh ob der Riederalp, 2300m (Marietan); ob Oberwald(Coaz).</p> <p>Die Lusus bifidum Wollaston, furcatum Milde, daedaleum Milde, anomalum Th.Moore und serraturn Wollaston (dieser angenähert) sind von FARQUET und COQUOZ aus dem Val du Trient angegeben worden.</p>Published as part of <i>Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71</i> on pages 1-55
Oxydema Wollaston 1873
No full textGenus OXYDEMA Wollaston 0xydema Wollaston, Ent. Soc. London, Trans., 487-488, 1873. Pseudo/us Sharp, Roy. Dublin Soc., Trans. II, 3: 190, 1885. Synonym by Zimmerman, B. P. Bishop Mus., 0cc. Papers 15 (25): 286, 1940. This genus includes seven species which, with the exception of the widespread 0. fusifonne , are all confined to the Pacific from Sumatra eastward. Champion (Linn. Soc. London, Trans. II, 16: 484, 1914) says that 0. elongatuni Pascoe (Mus. civ. nat. stor. Genova, Ann. II, 2: 321, 1885) may be a synonym of 0. fusifonne Wollaston. KEY 'l'0 'l'HE SPECIES m· OxYDEMA oF GuAM 1. Elytral striae deeply, coarsely, and conspicuously grooved from base to apex throughout; intervals with small but comparatively coarse and conspicuous punctures, transversely sculptured and not appearing smooth............................... TODO TODO TODO TODO 2. Elytralstriaenotorbutshallowlyimpressedbetweenthepuncturesonthedisk, never conspicuously and deeply grooved throughout; intervals with microscopic punctures only and appearing smooth and polished................................... TODO TODO TODO TODOPublished as part of Zimmerman, Elwood C., 1942, Curculionidae of Guam, pp. 73-146 in Insects of Guam I, Honolulu, Hawaii :Bernice P. Bishop Museum on page 138, DOI: 10.5281/zenodo.515996
Smicronyx pauperculus Wollaston 1864
No full text<i>Smicronyx pauperculus</i> Wollaston, 1864 <p>Figs 1I, 4A, 5I</p> <p> <i>Smicronyx pauperculus</i> Wollaston, 1864: 317 <b>Material examined. Lectotype ♀ [here designated]</b>: ‘Type’ ‘ <i>Smicronyx pauperculus</i> Woll’ ‘ <b>Canary Islands</b>. Teneriffe. T.V. Wollaston Coll. B. M. 1864-80 ’ ‘Standing in Wollaston coll. as <i>Smicronyx pauperculus</i> ’ (fitted with a red lectotype label: “ LECTOTYPE / <i>Smicronyx pauperculus</i> / Wollaston, 1864 / Haran J. des. 2018”, BMNH). <b>Paralectotypes [here designated]</b>. Data as for Lectotype (1♂, 1♀, fitted with a red Paralectotype label: “ PARALECTOTYPE / Smicronyx pauperculus / Wollaston, 1864 / Haran J. des. 2018”, BMNH); Grand Canary Island (1♀, fitted with a red Paralectotype label: “ PARALECTOTYPE / Smicronyx pauperculus / Wollaston, 1864 / Haran J. des. 2018”, BMNH). <b>Other material. Burkina Faso</b>, Nahouri, Nazinga forest, Barka, 265 m, 11°08’30’’N 01°36’35’’O, 24.vii.2006, Sudanian savanna with trees, light trap, F. & S. Génier, 2006-62 (2♀, CMNC); Nahouri, Nazinga forest, Boulieselo, 310 m, 11°11’50’’N 001°35’09’’O, 27.vii.2006, Sudanian savanna with trees, light trap, F. & S. Génier, 2006-82 (1♀, CMNC); Nahouri, Nazinga forest, Naguio, 270 m, 11°07’52’’N 001°34’38’’O, 24.vii.2006, Sudanian savanna with trees, light trap, F. & S. Génier, 2006-66 (1♀, CMNC); Nahouri, Nazinga forest, Akwazena, 275 m, 11°09’24’’N 001°36’44’’O, 21.vii.2006, Sudanian savanna with trees, light trap, F. & S. Génier, 2006-53 (1♀, CMNC); Loroum, Toulfé, 300 m, 13°53’43’’N 001°52’25’O, 16.vii.2006, Sudanian savanna with trees, light trap, F. & S. Génier, 2006-40 (2♂, CMNC); <b>Kenya</b>, Nairobi, 1660 m, xi.1911, Alluaud & Jeannel leg. (2♂, MNHN; 1♂, 1♀, MNHN; 3♂, MNHN); Nairobi, 1903, Alluand leg. (1♂, MNHN). <b>Mali</b>, Dogo, 18.vii.1950, light trap (1♀, MNHN); Kemleton, 12.xi.1956, PB. de Miré leg. (1♂, MNHN); Chizeh (Country?), ix. (Year?), (1♂, MNHN). <b>Senegal</b>, Saint-Louis, Richard-Toll, 16°26’25’’N 015°39’29’’O, 9m, 28.viii.2009, Sahelian zone tigred bush, light trap, F. Génier, 2009-36 (1♂, 1♀, CMNC). <b>Tanzania</b>, Mkonga Forest Reserve South Pare Mountains, S04°07’48’’; E37°45’49’’, 1.xii.2011, light trap, R. Smith & H. Takano leg. (1♀, BMNH); Ndarakwai, W Kilimanjaro, S03°00’49’’; E36°59’23’’, 5–7.iv.2012, 1310 m, light trap, R. Smith & H. Takano leg. (7♂, 3♀, BMNH); Orekeryan, Mt. Longido, S02°43’47’’; E36°43’26’’, 8.xi.2011, light trap, R. Smith & H. Takano leg. (1♂, BMNH). <b>Zambia</b>, 2.5 km E Namushakende, 1100 m, 15°26’40’’S 23°14’57’’E, 30.xi.2010, Zambezian <i>Cryptosepalum</i> dry forest, light trap, F. Génier, 2010-04 (1♂, CMNC).</p> <p> <b>Diagnosis</b>. Body length 1.9–2.0 mm. <b>Colour</b>. Body integument reddish, except rostrum, antennae, prothorax, suture of elytra and tarsi, which are usually black, some rare specimens entirely black with whitish vestiture; vestiture of elytra generally consisting of elongate brownish scales, recumbent, not concealing integument, and whitish scales, thicker, forming transverse patches. <b>Head</b>. Rostrum moderately and regularly downcurved in lateral view, longer than head capsule + prothorax. <b>Prothorax</b>. Quadrate (w/l ratio: 1), sides rounded in basal half, constricted apically, widest slightly behind middle, with median line of whitish scales, mostly visible near scutellum. <b>Elytra</b>. Subparallel in basal two thirds (w/l ratio: 0.65), rounded toward apex in apical third. <b>Legs</b>. Femora moderately clavate, armed with a distinct ventral tooth, tibiae straight. <b>Genitalia</b>. Penis moderately elongate (w/l ratio: 0.60), sides straight, subparallel, apex truncate, moderately and regularly curved in lateral view (Fig. 5I).</p> <p> <b>Life history</b>. This species is known to develop on flowers of <i>Cuscuta campestris</i> Yunck (Anderson 1974, Haran <i>et al</i>. 2017) developing on plants of open and disturbed agricultural areas. It is often recorded by light trapping. In sub-Saharan Africa, adults were collected in April, July, August, September, November and December.</p> <p> <b>Distribution</b>. <i>Smicronyx pauperculus</i> is widely distributed around the Mediterranean basin (Caldara 2013, Haran <i>et al</i>. 2017). In sub-Saharan Africa, it has been recorded in West (Mali) and East (Kenya, Tanzania) Africa.</p> <p> <b>Discussion.</b> This species is close to <i>S. gossypii</i>; see discussion on that species for diagnostic characters. It is also close to <i>S. rufus</i>, but the integument of the latter species is entirely red (head and prothorax dark in fullysclerotized specimens of <i>S. pauperculus</i>). See discussion on <i>S. rufus</i> for the genetic divergence between the two species.</p>Published as part of <i>Haran, Julien, 2018, A review of the genus Smicronyx Schoenherr (Coleoptera, Curculionidae, Curculioninae) in tropical Africa, pp. 267-287 in Zootaxa 4508 (2)</i> on pages 278-279, DOI: 10.11646/zootaxa.4508.2.9, <a href="http://zenodo.org/record/2607088">http://zenodo.org/record/2607088</a>
"Basar Taxonomie"? : Ein erfolgreiches Kreuzungsexperiment zu Acalles aeonii Wollaston, 1864* (Coleoptera: Curculionidae: Cryptorhynchinae)
No full textAls Ergebnis eines aufwendigen, aber erfolgreichen Kreuzungsexperimentes von Acalles aeonii Wollaston 1864 x Acalles bodegensis Stüben 2000 wird folgende Synonymie endgültig bewiesen: Acalles aeonii Wollaston 1864 = Acalles bodegensis Stüben 2000 syn. nov. Zucht und Kreuzung der genannten Arten werden über zahlreiche Generationen hinweg an der Entwicklungspflanze Aeonium holochrysum W. & B. detailliert beschrieben und die Ergebnisse diskutiert. Mit einer ausführlichen Diskussion zur Notwendigkeit von Kreuzungsexperimenten in der taxonomisch-systematischen Forschung.As a result of a successful cross-breeding of Acalles aeonii Wollaston 1864 x Acalles bodegensis Stüben 2000 the following synonymy is established definitively: Acalles aeonii Wollaston 1864 = Acalles bodegensis Stüben 2000 syn. nov. A detailed report on rearing and cross-breeding of the former two species on its host plant Aeonium holochrysum W. & B. during a number of generations is given and the results are discussed. With a detailed discussion to the necessity of cross-breeding experiments in the field of taxonomicsystematic research. Including 31 colour photographies
- …
