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Flavizona Huo, a new genus of Syrphini from China, with a key to genera of Syrphini in China
No full textHuo, Ke-Ke, Shi, Fu-Min (2010): Flavizona Huo, a new genus of Syrphini from China, with a key to genera of Syrphini in China. Zootaxa 2428: 47-54, DOI: 10.5281/zenodo.19467
FIGURES 1–5 in Flavizona Huo, a new genus of Syrphini from China, with a key to genera of Syrphini in China
No full textFIGURES 1–5. Flavizona dolichostigma: 1. Male habitus, left lateral view; 2. Male head, right lateral view; 3. Female head, left lateral view; 4. Antenna, median view; 5. Wing, dorsalPublished as part of Huo, Ke-Ke & Shi, Fu-Min, 2010, Flavizona Huo, a new genus of Syrphini from China, with a key to genera of Syrphini in China, pp. 47-54 in Zootaxa 2428 on page 52, DOI: 10.5281/zenodo.19467
Flavizona Huo, gen. nov.
No full textFlavizona Huo, gen. nov. Type species: Flavizona dolichostigma Huo, sp. nov. Eye densely dark long pilose, holoptic in male, but dichoptic in female. Face subcarinate, extended obliquely downwards and forward, with small, indistinct medial tubercle, and shiny, black medial vitta and lateral vittae. Occiput narrower dorsally, gradually broadened downwards laterally. Antenna black, basoflagellomere nearly as long as basal two segments together, about twice as long as wide, apex broadly rounded. Arista black with microscopic pubescence. Thorax longer than wide, black, thinly gray pollinose, in anterior portion of scutum with a pair of distinct gray medial vittae extending beyond transverse suture. Thoracic pile yellowish brown (in male) to nearly whitish (in female). Scutellum black, but yellow brown apically, especially so in female, pile long, yellowish brown. Metasternum bare. The pile patches on katepisternum broadly separated posteriorly. Metacoxa lacks a pile tuft at posteromedial apical angle. Wing entirely microtrichose, hyaline, in middle portion without dark brown macula. Vein r 4 + 5 straight, joined with m 1 in a right angle. Vein r-m located before middle of cell DM. Pterostigma brownish black, long, extending from apex of vein sc to apex of vein r 1 + 2. Abdomen lacks premarginal sulcus, elongately oval, parallel-sided, from tergum 4 backward tapering. Abdominal terga of 1, 2 and basal third of tergum 3 yellowish orange, the rest black, pile of similar color to background. Discussion: In appearance the new genus is extremely similar to Leucozona Schiner, 1860. Their eyes densely long dark pilose, face bearing lustrous black medial vitta and lateral vittae. Abdomen black, but light on terga 1, 2 and basal third of tergum 3. The new genus can easily be distinguished from the latter by small, indistinct facial tubercle, wing without dark brown macula medially, and elongate oval abdomen without premarginal sulcus. Etymology: The new name is derived from the Latin words flav- (yellow) and zona (waistband), referring to abdomen in light color basally. Gender is feminine.Published as part of Huo, Ke-Ke & Shi, Fu-Min, 2010, Flavizona Huo, a new genus of Syrphini from China, with a key to genera of Syrphini in China, pp. 47-54 in Zootaxa 2428 on pages 50-51, DOI: 10.5281/zenodo.19467
Flavizona dolichostigma Huo, sp. nov.
No full textFlavizona dolichostigma Huo, sp. nov. Figs. 1–5 Diagnosis: small sized, black flies with wing lacking dark brown macula and abdomen yellowish orange on terga 1, 2 and basal third of tergum 3. Adult: Body length: 11 mm (3) or 10 mm (Ƥ); wing length: 9 mm (3) or 9 mm (Ƥ). Head: Eye dark brown, holoptic, densely long dark brown pilose, but yellowish posteroventrally from some views. Eyes joined for a distance shorter than length of frons. Vertex narrow, shorter than eye contiguity. Frons black, lustrouse anteriorly, sparsely long black pilose, basally covered with gray pollen which obscured background. Lunule shining black. Face subcarinated, underneath frontal prominence shallowly concave, and then extended obliquely downwards and forward, facial tubercle indistinct, which is only a small prominence at ventral third of face from lateral view. Face dull brown, gray pollinose, obscured background, thinly black long hairs intermixed with some yellowishwhite ones, leaving facial medial vitta black, lustrous, about 1 / 3 face in width, laterally below eyes with black vittae. Gena blackish brown, gray pollinose, covered thinly with whitish long pile. Occiput narrower, black pilose with a row of black long hairs along posterior margin of eyes on dorsal portion, gradually broadened laterally downwards with whitish pollen and pile which is longer on lower parts. Antenna black, dorsal and ventral margins of two basal segments black pilose, basoflagellomere as long as two basal segments combined together, about twice as long as wide, apex bluntly rounded. Arista long, black with microscopic pubescence. Thorax: Scutum longer than wide, black with bluish reflection, covered with gray pollen which obscured background and formed indefinitely lateral vittae before transverse suture and in the middle portion a pair of definite gray vittae extending beyond transverse suture. Pile long, yellowish, intermixed with some black pili anteromedially. Scutellum black, but slightly yellow brown apically, thinly gray pollinose, with yellowish long pile and dense ventral scutellar fringe. Pleura shining black, slightly with bluish tinge, gray pollinose, which obscures background of anepisternum, posterodorsal part of katepisternum, anepimeron and katepimeron. Pleural pile long, yellowish to yellowish white, but meron bare. Pile patches on katepisternum broadly separated posteriorly. Metasternum bare. Legs: black, but yellowish brown on apices of femora, pro- and mesotibiae and basal 1 / 3 of metatibiae; pro- and mesotibiae with dark markings on apical part; pro- and mesotarsi dull brown. Pile of legs mainly black, except for yellow ones on pro- and mesotibiae. Pro- and mesofemora with black long pile on posteroventral portion throughout. Metacoxa black long pilose without a pile tuft posteromedially, femur anteroventrally with black long hairs, metatarsi nearly as long as metatibiae. Wing: entirely microtrichose, hyaline, in middle portion without dark brown macula. Cell R 1 open; Vein r 4 + 5 straight, joined with m 1 in a right angle. Vein r-m located before middle of cell DM. Pterostigma brownish black, long, extending from apex of vein sc to apex of vein r 1 + 2. Calypteres dull brown with fringes of same color. Halter brown with yellowish capitulum. Abdomen: without premarginal sulcus, elongate oval, parallel-sided, tapered backward from tergum 4. Abdominal terga of 1, 2 and basal third of tergum 3 yellowish orange, the rest black with a little blue reflection, Pile of similar color to background, which is longer basally on lateral margins. Sterna have similar color and pile to that on terga, but pile nearly adpressed on posterior 2 / 3 of sternum 4 and other sterna behind. Female: Dichoptic. Width of vertex between posterior margins of eyes slightly less than 1 / 4 head width. Ocellar triangle slightly convex. Ocelli equilateral triangle. Vertex and frons gradually broadened forward, shiny black, brown pollinose and long black pilose. Antenna shorter than in male. Thoracic pile whitish yellow. Scutum on anterior half gray pollinose, obscured background. Scutellum distinctly yellow brown on posterior half. The other characters are similar to in male. Type material: Holotype: 3 (deposited in BKLSUT). CHINA: Henan Province, Baiyun Mountain, Song County, Aug. 17, 2008, collected by Huo Ke-Ke; paratype: Ƥ (deposited in BKLSUT). CHINA: Sichuan Province, Hongba, Jiulong County, Sep. 26, 2008, collected by Shi Fu-Min. Etymology: The new name is derived from the Greek words dolich- (long) and stigma (pterostigma), referring to long pterostigma. Distribution: China (Henan Province, Sichuan Province).Published as part of Huo, Ke-Ke & Shi, Fu-Min, 2010, Flavizona Huo, a new genus of Syrphini from China, with a key to genera of Syrphini in China, pp. 47-54 in Zootaxa 2428 on pages 51-53, DOI: 10.5281/zenodo.19467
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
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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