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A new species of Campsurus Eaton, 1868 (Ephemeroptera: Polymitarcyidae) from Brazil
No full textCabral, Jeniffer, Salles, Frederico F., Mariano, Rodolfo (2022): A new species of Campsurus Eaton, 1868 (Ephemeroptera: Polymitarcyidae) from Brazil. Zootaxa 5213 (3): 236-242, DOI: https://doi.org/10.11646/zootaxa.5213.3.
FIGURES 1–2 in A new species of Campsurus Eaton, 1868 (Ephemeroptera: Polymitarcyidae) from Brazil
No full textFIGURES 1–2. Map of Brazil with details of collection locality: 1: circle, Ribeirão Cascalheira, State of Mato Grosso; 2: Suiamiçu river.Published as part of Cabral, Jeniffer, Salles, Frederico F. & Mariano, Rodolfo, 2022, A new species of Campsurus Eaton, 1868 (Ephemeroptera: Polymitarcyidae) from Brazil, pp. 236-242 in Zootaxa 5213 (3) on page 237, DOI: 10.11646/zootaxa.5213.3.2, http://zenodo.org/record/735989
FIGURES 3–9 in A new species of Campsurus Eaton, 1868 (Ephemeroptera: Polymitarcyidae) from Brazil
No full textFIGURES 3–9. Campsurus molinerii sp. nov. male imago. 3: forewing; 4: hind wing; 5: dorsal habitus; 6: abdomen (lateral view); 7: genitalia (ventral view); 8: penes (lateral view); 9: detail of pedestal, photography (op=outer projection of pedestal; sl: secundary lobe of penes; ml: main lobe of penes).Published as part of Cabral, Jeniffer, Salles, Frederico F. & Mariano, Rodolfo, 2022, A new species of Campsurus Eaton, 1868 (Ephemeroptera: Polymitarcyidae) from Brazil, pp. 236-242 in Zootaxa 5213 (3) on page 238, DOI: 10.11646/zootaxa.5213.3.2, http://zenodo.org/record/735989
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Campsurus molinerii Cabral & Salles & Mariano 2022, sp. nov.
No full textCampsurus molinerii sp. nov. (Figures 3–15) Materials examined. Holotype: ♂ imago (genitalia and wings on slide), BRAZIL, Mato Grosso, Ribeirão Cascalheira, Fazenda Campina Verde, Rio Suiá-miçu, 28-30.xi.2006, S12˚48.591 W52˚06.925, A. R. Calor, R. Silva & S. Mateus cols (MZUESC-EPH0640). Paratypes: 27 ♂ imagos, same data as holotype (10 in MZUESC- EPH0641; 10 in UFVB; 07 in MZUSP). Diagnosis. The male imago of Campsurus molinerii sp. nov. can be separated from the other congeners by the following combination of characters: 1) male abdominal sternum IX posterior margin truncate to slightly concave, microlepides 3- to 6-pointed; 2) pedestals of each side almost touching basally, and parastylus wide at base and abruptly narrowed in distal half; 3) outer projection of pedestal with apical condyle process-like projection; 4) main lobe of penis expanded laterally, slightly curved ventrally and with acute apex curved ventrally outwards, apical portion almost cylindrical with apex in ventral view pointed, secondary membranous lobe cylindrical and relatively long; 5) small size (length of male fore wings 5.0– 5.8 mm). Description. Male imago (n=10). Lengths (mm): body, 5.3–6.6; forewings, 5.0–5.8; hind wings, 2.0–2.5; forelegs, 2.4–2.8; cerci, 15.0–16.8. General coloration: yellowish white. Head. Yellow shaded with blackish grey on dorsum; antennae: scape and pedicel yellowish, flagellum hyaline. Ocelli white surrounded with black. Thorax. Pronotum translucent, shaded with brownish laterally; meso- and metanotum yellowish-brown with sutures well marked (Figure 5). Mesonotum shaded with black marks on median zone of scutum and darker between posteroscutal protuberances; pleura and sterna pale yellowish white. Forelegs with femur shaded with gray; tibiae with posterior black marks; vestigial middle and hind legs yellowish. Wings translucent whitish, shaded with gray on subcostal distal area (Figures 3–4). Abdomen. Whitish translucent; all terga gradually shaded with gray, becoming darker on VIII–X (Figures 5–6). Sternum IX brownish with truncate to sinuous hind margin and covered with 3- to 6-pointed microlepides (Figure 11). Genitalia. (Figures 7–15) Yellowish white. Forceps whitish translucent; pedestals of each side almost touching basally, inner corner short and not projected, parastylus wide at base and abruptly narrowed in distal half, outer projection of pedestal with apical condyle process-like projection (Figures 7, 9 and 13). Main lobe of penis expanded laterally, rounded but not ear-like, slightly curved ventrally and with acute apex curved ventrally outwards, apical portion almost cylindrical with apex in ventral view pointed; secondary membranous lobe of penis cylindrical and almost reaching apex of main lobe (Figures 7–8, 10, 14–15). Paracercus whitish and short, cerci whitish translucent. Female imago. Unknown. Nymph. Unknown. Etymology. The specific name, molinerii (masculine, noun in the genitive case singular), is dedicated to our colleague Carlos Molineri for his contribution to the knowledge of neotropical mayflies.Published as part of Cabral, Jeniffer, Salles, Frederico F. & Mariano, Rodolfo, 2022, A new species of Campsurus Eaton, 1868 (Ephemeroptera: Polymitarcyidae) from Brazil, pp. 236-242 in Zootaxa 5213 (3) on pages 239-241, DOI: 10.11646/zootaxa.5213.3.2, http://zenodo.org/record/735989
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
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