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A revision of the Neotropical genus Metasiphonella Duda, 1930 (Diptera Chloropidae)
No full textRiccardi, Paula Raile, Bazyar, Zeinab, Ismay, Barbara (2020): A revision of the Neotropical genus Metasiphonella Duda, 1930 (Diptera Chloropidae). Zootaxa 4885 (3): 437-446, DOI: 10.11646/zootaxa.4885.3.
Fig. 1 in First records of Pseudogaurax Malloch 1915 (Diptera: Chloropidae) from Singapore, with the description of two new species discovered with NGS barcodes
No full textFig. 1. Habitus of holotype of Pseudogaurax sexnotatus, new species (female, specimen ZRC_BDP0025357). A, dorsal habitus showing dorsal scutum and scutellum, as well as head capsule in oblique view, note the six distinct spots on thorax; B, lateral habitus showing thoracic pleura, head, legs and wing, as well as terminalia behind wing; C, dorsal view of head.Published as part of Ismay, Barbara & Ang, Yuchen, 2019, First records of Pseudogaurax Malloch 1915 (Diptera: Chloropidae) from Singapore, with the description of two new species discovered with NGS barcodes, pp. 412-420 in Raffles Bulletin of Zoology 67 on page 414, DOI: 10.26107/RBZ-2019-0033, http://zenodo.org/record/457709
FIGURES 1–8. Figs 1–2, 5, 7. Metasiphonella magnifica external morphology. 1, habitus. 2, dorsal view. 5 in A revision of the Neotropical genus Metasiphonella Duda, 1930 (Diptera Chloropidae)
No full textFIGURES 1–8. Figs 1–2, 5, 7. Metasiphonella magnifica external morphology. 1, habitus. 2, dorsal view. 5, head in frontal view. 7, femoral organ. Figs 3–4, 6, 8. Metasiphonella amorimi sp. nov. external morphology. 3, dorsal view. 4, habitus. 6, head in frontal view. 8, wing. Scale bar 1 mm.Published as part of Riccardi, Paula Raile, Bazyar, Zeinab & Ismay, Barbara, 2020, A revision of the Neotropical genus Metasiphonella Duda, 1930 (Diptera Chloropidae), pp. 437-446 in Zootaxa 4885 (3) on page 441, DOI: 10.11646/zootaxa.4885.3.7, http://zenodo.org/record/429682
FIGURES 9–13. Metasiphonella postabdomen. 9, M in A revision of the Neotropical genus Metasiphonella Duda, 1930 (Diptera Chloropidae)
No full textFIGURES 9–13. Metasiphonella postabdomen. 9, M. magnifica epandrium in terminal view (arrow points to the remnant of the 6th sternite). 10, M. magnifica male terminalia in ventral view. 11, M. amorimi sp. nov. epandrium in terminal view (arrow points to the remnant of the 6th sternite). 12, M. amorimi sp. nov. male terminalia in apical ventral view (arrow points to the sclerite with a serrated margin). 13, M. magnifica female terminalia in ventral view. Scale bar 0.1 mm. Abbreviations: bas, basiphallus; cer, cercus; dis, distiphallus; ep, epandrium; gon, pre- and postgonite fused; hyp, hypandrium; phal, phallapodeme; spm, sperm pump; sur, surstylus.Published as part of Riccardi, Paula Raile, Bazyar, Zeinab & Ismay, Barbara, 2020, A revision of the Neotropical genus Metasiphonella Duda, 1930 (Diptera Chloropidae), pp. 437-446 in Zootaxa 4885 (3) on page 442, DOI: 10.11646/zootaxa.4885.3.7, http://zenodo.org/record/429682
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
Pseudogaurax sexnotatus Ismay & Ang 2019, new species
No full textPseudogaurax sexnotatus Ismay & Ang, new species (Fig. 1) Type material. Holotype (here designated), female: SINGAPORE, Nee Soon Swamp Forest, from Malaise Trap NS1 [1°23′00.3″N 103°48′46.5″E] (Collection event: 29246, 17-25.xi.2011). Specimen code ZRC _ BDP0025357, deposited in the LKCNHM (ZRC). Cytochrome oxidase I (COI) partial-cds for this specimen deposited in GenBank under reference MK 541947. Diagnosis. In female, almost entirely yellow species with six black thoracic markings and entirely yellow legs. Description. Length. Body 2.31 mm, wing 2.25 mm. Head. (Fig. 1 A–C). Broader than deep (ocelli to proboscis) and longer (occiput to antennal sockets) than deep (1.16: 0.72: 0.78 mm), entirely yellow except for black pubescent arista with hairs twice as long as base of arista, blackened dorsal margin of postpedicel, blackened outer lateral margin of pedicel and black ocellar tubercle (the raised part within the ocellar triangle, delimiting the ocelli). Head and thoracic setae yellow. Ocellar setae short, reclinate and cruciate, equal to length of ocellar tubercle. About eight long, thin, pale, reclinate orbital setae developed, increasing in size posteriorly, the most posterior equal in length to width of palpus. Outer vertical seta strongly developed, as long as postpedicel is deep, lateroclinate and slightly reclinate; inner vertical seta as long as postocellars, incurved and proclinate, circa half-length of outer vertical seta, postocellar setae strongly developed, long, cruciate and reclinate, equal to outer vertical seta. Frons slightly broader than long (0.47: 0.34 mm), width measured at level of anterior ocellus, lateral margins of frons parallel, anterior margin in middle slightly convex, yellow, dusted with two rows of long, pale setulae along outer margin of ocellar triangle. Ocellar triangle bare, large, extending into a point to about one palpus width away from anterior margin, posteriorly to almost width of frons, distance between posterior corner and eye margin as wide as 1.5 times the width of an ocellus, lateral margins slightly concave, shiny, pale orange. Eye oval, long axis vertical with short, dense pubescence. Face pale yellow, dusted, slightly broader than deep, strongly concave; faint carina present, not visible below antennae; antennae pale yellow, postpedicel reniform, deeper than long, as long as palpus, black around insertion of arista; arista basal, black, with strong short pubescence (twice as long as basal diameter of arista), 1.2 times as long as postpedicel; gena very narrow, as deep as width of base of arista, pale yellow slightly shiny, one row of pale setulae on genal margin, as long as depth of antenna, vibrissal angle obtuse; occiput yellow, very narrow in lateral view, as wide as twice the width of the base of the arista; proboscis pale yellow, short, weakly sclerotised; palpus pale yellow, slightly longer than antenna, slightly curved dorsally, with several long, pale setulae; mouth edge slightly protruding; clypeus pale yellow. Thorax. (Fig. 1A, B). Scutum slightly broader than long (0.75: 0.66 mm), yellow, with three stripes, the central black longitudinal stripe starting the width of the postpedicel posteriorly from the anterior margin as thin as the tip of the arista, ending at the posterior margin being half as wide as the postpedicel, the outer lateral stripes starting immediately posteriorly of suture widening into a broad triangle shape, ending just before posterior post alar bristle; a faint darker mark present on the dorsal notopleuron, separated from the transverse suture by a yellow band; scutum entirely shiny with dense, medium long, pale setulae; one posterior dorsocentral seta developed, as long as second apical anterior tarsus, no acrostichal setae developed; postpronotal lobe yellow with one long seta at lateral posterior margin, equal to ocellar setae; the dark brown mark surrounding the pale anterior spiracle as large as half the postpedicel; notopleuron yellow with 1 plus 2 long yellow setae, as long as the inner vertical seta, but the upper posterior seta slightly shorter; posterior post-alar seta yellow and as long as outer vertical seta. Pleura entirely shiny, and mostly bare, all yellow except for ventral half of anepisternum black, with faint metallic reflections, except for a fine yellow line at the ventral and posterior margin, front margin of katatergite with a black line twice as thick as the base of the arista at lower margin widening to smudgy dark grey mark in upper third, at upper margin 1.5 times as wide as arista including pubescence, anatergite with longitudinal dark grey smudgy mark along apical third of outer margin, postnotum light orange, shiny, ventral margin of katepisternum with several very long setulae, haltere very pale, almost white. Scutellum yellow with large black central mark, covering c. 80% of flattened disc of scutellum, leaving lateral and posterior margin yellow, shiny, about as long as wide (0.31: 0.34 mm), shield-shaped, disc and lateral margins with even but small black setulae; apical scutellar setae broken off, not approximated, originating from small tubercles, four pairs of short yellow lateral scutellar setae originating from small tubercles. Haltere pale yellow. Wing. (Fig. 1B). Translucent with brown veins, covered in sparse brown microtrichia and long setulae along costal margin; costal ratios measured from base of basicosta to point where R 1 touches Costa, then along costal margin of r 2+3, then along costal margin of r 4+5: 0.91: 0.69: 0.41: 0.25 mm; cell r 1 broader than cell r 2+3, veins R 4+5 and M 1 almost parallel up to costal wing margin, where they diverge very slightly, distinct kink in M 4, costal break basal to where R 1 touches Costa, basicosta white. Legs. (Fig. 1B). All legs yellow, shiny, covered in yellow setulae that are longer than twice the width of the base of the arista; coxa pale yellow, basal third of femur pale yellow, mid and posterior femora and tibiae slightly darker yellow in apical two thirds; posterior femora and tibiae 1.5 times as thick as mid femora and tibiae; apical four left middle tarsal segments missing; yellow apical anteroventral straight spur on mid tibia as long as tibia is thick, femoral or tibial organ absent; apical tarsal segment scarcely wider than basal segment. Abdomen. Ventrally white, anterior margin of tergite 1+2 white, middle third of posterior margin white, lateral thirds dark brown thus forming a trapezoidal white mark in middle; middle fifth of tergite 3 white at anterior margin forming a white triangle with a blunt end to posterior margin, laterally dark brown; tergites 4 and 5 dark brown, each with a small white spot in middle of anterior margin; all tergites with relatively long pale setulae; lateral thirds of tergite 4 dark brown. Female terminalia. (Fig. 1C). Not extended, but tergite 6 dorsally black, laterally white; tergite and sternite 8 white, cercus long, as long as apical two anterior tarsi, black, with two very long, fine pale setulae as long as outer vertical. Barcode. Cytochrome oxidase I (COI) partial-cds (313 b.p.; GenBank accession code MK541947) as follows: ---tttatcttcaattattgctcatggaggagcttcagttgatttagcaattttttcact tcatttagctggagtatcttcaattttaggagcagtaaattttattactacagtaattaa tatacgttcaacaggaattacatttgatcgaatacctttatttgtatgatcagtagtaat tactgctttacttcttcttttatcattacctgtattagctggagctattactatattatt aactgatcgaaatttaaatacttcattttttgatccagctggaggaggagatccaatttt ataccaacatttattt Etymology. The species name sexnotatus (six and marked) is derived from Latin, referring to the six distinct black marks on the thorax. Remarks. This new species runs to couplets 6 in the keys by Ismay (1987) and by Cherian (2013), but this species does not agree with either of the two parts of these couplets. This species differs from both sides of couplet 6 in Ismay (1987) in that the scutellum is yellow with a wide central black stripe, whereas in couplet 6 the scutellum is differently coloured. It disagrees with Cherian (2013) couplet 6 in that it's ocellar triangle does not reach the anterior margin of the frons (as in P. sabroskyi), but the scutellum is longer than wide, while it ought to be wider than long in the second part of the couplet. It is therefore regarded as a new species.Published as part of Ismay, Barbara & Ang, Yuchen, 2019, First records of Pseudogaurax Malloch 1915 (Diptera: Chloropidae) from Singapore, with the description of two new species discovered with NGS barcodes, pp. 412-420 in Raffles Bulletin of Zoology 67 on pages 413-415, DOI: 10.26107/RBZ-2019-0033, http://zenodo.org/record/457709
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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