1,722,312 research outputs found
Mirollia lanceolata Shi & Wang 2005
No full text15. Mirollia lanceolata Shi & Wang, 2005 (Figures 2 H, 6 D–F, 10 Q) Mirollia lanceolata Shi & Wang 2005, In: Yang, M.F. & Jin, D.C. (Eds.) Insects of Dashahe in Guizhou Province: 75. Material examined. Holotype, male, Dashahe, Daozhen, Guizhou, 19 Aug. 2004, coll. Fu-Ming Shi. Redescription. Male. Stridulatory area of left tegmen long oval, 3.4 mm long, 1.9 mm wide (Fig. 10 Q). Cerci short, not reaching apex of subgenital plate (Fig. 6 D); strongly incurved in apical third; apex with a minute apical spine (Fig. 6 F). Phallus with two pairs of sclerites: lateral sclerites long, basal part thick, distal part lanceolate; medial sclerites bilobate, rather small, dorsal lobe denticulate on top. Subgenital plate strongly curved upwards before middle; basal part broad, medial area narrow and apical part slightly widened, posterior margin longitudinally split into two wide lobes (Fig. 6 E). Measurements (mm). Male. Body: 15.0; body with wings: 32.5; pronotum: 4.0; tegmen length: 24.0; tegmen width: 4.5; hind wing: 28.5; profemur: 4.2; mesofemur: 6.3; postfemur: 13.0. Distribution. China (Guizhou).Published as part of Wang, Gang, Wang, Hai-Jian & Shi, Fu-Ming, 2015, Remarks of the genus Mirollia (Orthoptera: Tettigoniidae: Phaneropterinae) from China, pp. 307-333 in Zootaxa 4021 (2) on page 316, DOI: 10.11646/zootaxa.4021.2.4, http://zenodo.org/record/23579
FURTHER VALIDATING THE TWO-FACTOR STRUCTURE OF THE PERSONAL NEED FOR STRUCTURE SCALE: COMMENT ON SHI, WANG, AND CHEN (2009)
No full textShi, Wang, and Chen's 2009 study validated the Personal Need for Structure Scale in Chinese. The two-factor structure can be further validated by examining the different functions of its components, i.e., "Desire for Structure" and "Response to Lack of Structure." This validation will help researchers and practitioners explore the different attributes, functions, and foundations of the two factors, and also help cultivate the use of the scale in the most appropriate situations.Psychology, MultidisciplinaryPubMedSSCI0ARTICLE3752-75410
Pristinmicrophor Tang, Shi, Wang & Yang
No full textPristinmicrophor Tang, Shi, Wang & Yang Pristinmicrophor Tang, Shi, Wang & Yang, 2019: 2. Type species: P. hukawngensis Tang, Shi, Wang & Yang, 2019, by original designation. Included species. Pristinmicrophor hukawngensis Tang, Shi, Wang & Yang, 2019 (Hukawng Valley, northern Myanmar; lowermost Cenomanian, Upper Cretaceous). Remarks. The genus Pristinmicrophor was established to include a single species (P. hukawngensis) found from the amber of northern Myanmar (Tang et al. 2019). The genus was not properly defined. The authors indicated three characters in their view that distinguished this taxon from other microphorines: pterostigma present, small cell br and vein M 2 absent. However, all these characters are present in other microphorines. According to the original description, P. hukawngensis exhibits an interesting mosaic of characters. This species is relatively plesiomorphic in the following features: antenna placed near middle of head (fig. 2A), stylus two-articled, eyes bare, two pairs of scutellar setae, Sc fused to costa, bm-cu vein complete, long CuA+CuP (anal vein) extending almost to wing margin (fig. 2C), female tergite 10 with spine-like setae. However, the following characters are apomorphies: male eyes dichoptic, complete precoxal bridge, cell dm very narrow and almost parallel-sided, vein M 2 absent. In addition, the authors mentioned an incomplete costa ending at R 4+5 that, however, is not evident on the photos of figure 1 (Tang et al. 2019: 2). The shape of the discal cell is probably an autapomorphy of Pristinmicrophor. In P. hukawngensis, the discal cell is unusually narrow and almost parallel-sided (versus distinctly broadened toward apex) (Tang et al. 2019: fig. 2C). A complete prothoracic precoxal bridge (prosternum fused laterally with proepisternum), described in P. hukawngensis, has never been found in microphorines. The prosternum is isolated in Microphor, Schistostoma and Meghyperiella, but its condition is unknown in Microphorites, Avenaphora and Curvus. Almost all recent Parathalassiinae (except Plesiothalassius Ulrich and Amphithalassius Ulrich) and all Dolichopodidae sensu stricto have a precoxal bridge. In addition, this condition is present in Electrophorella Cumming & Brooks known from Baltic amber (Cumming & Brooks 2002, 2019). Archichrysotus and Cretomicrophorus described by Negrobov (1978) from Cretaceous resins of Siberia (Taymyr) have a precoxal bridge as well. However, in Retinitus, described in the same paper, the condition of this character is unknown. The presence of the precoxal bridge is considered apomorphic (Chvála 1983; Ulrich 1991; Cumming & Brooks 2002, 2019; Ulrich 2004). However, this character shows some variations in Dolichopodidae sensu lato and is homoplasious in the Empidoidea on the whole (Ulrich 1991: 213, character 10; Sinclair & Cumming 2006: 30, character 30). In P. hukawngensis, Tang et al. (2019) describe the precoxal bridge as “complete, narrow”. The male of P. hukawngensis has dichoptic head structure (there is a little confusion on this character between the description and discussion, but we follow the former), with eye margins converging toward antennae. Amongst microphorines, this condition was described in Avenaphora (Cumming & Grimaldi 1999) and, probably, in Curvus (Kaddumi 2007). Dichoptic eyes are present in all male Parathalassiinae (including fossils) and, with very few exceptions, in Dolichopodidae sensu stricto. Traditionally, the dichoptic head structure of the male in Microphorinae, Parathalassiinae and Dolichopodidae sensu stricto was viewed as apomorphic (versus holoptic) (Hennig 1971; Chvála 1983; Cumming & Brooks 2002). Although, Ulrich (1991) considered that this character cannot be definitely appraised. In the remaining Empidoidea it is highly homoplasious (Sinclair & Cumming 2006: 21, character 1), sometimes, even within one genus and subgenus (e.g., Empis). The wing of Pristinmicrophor hukawngensis has only two M veins beyond the discal cell. However, vein M 2 is absent, or M 1+2 unforked, in Meghyperiella (assigned to Microphorinae), four genera of Parathalassiinae (extinct Archichrysotus and Retinitus, extant Chimerothalassius Shamshev & Grootaert and Neothalassius Brooks & Cumming) and in Dolichopodidae sensu stricto (M 1+2 forked in Sciapodinae). In addition, Ulrich (1991) noted that a tendency for the reduction of M 2 is present in Plesiothalassius flavus Ulrich. This pattern suggests that the reduction of M 2 has occurred several times within Dolichopodidae sensu lato. It is likely that even within microphorines this character evolved independently twice because there is no evidence of closer relationships between Meghyperiella and Pristinmicrophor. To conclude, Pristinmicrophor shows closer affinities to Avenaphora and Curvus sharing dichoptic head structure of the male. In addition, this condition could be considered as a synapomorphy of Pristinmicrophor, Avenaphora, Curvus and Parathalassiinae + Dolichopodidae sensu stricto, i.e., the assemblage of Pristinmicrophor, Avenaphora and Curvus as the sister lineage to Parathalassiinae and Dolichopodidae sensu stricto (Cumming & Brooks 2002). However, monophyly of the Pristinmicrophor + Avenaphora + Curvus lineage is uncertain. The presence of the precoxal bridge in Pristinmicrophor could provide additional evidence for close relationship with Parathalassiinae and Dolichopodidae sensu stricto. However, the condition of this character is unknown in Avenaphora and Curvus. Considering the plesiomorphic condition of the prothorax in the parathalassiine genera Plesiothalassius and Amphithalassius, the presence of the precoxal bridge in P. hukawngensis may suggest homoplasy and conclusion about closer phylogenetic relationships of this taxon with Parathalassiinae + Dolichopodidae sensu stricto would be premature.Published as part of Shamshev, Igor V. & Perkovsky, Evgeny E., 2022, A review of fossil taxa of Microphorinae (Diptera, Dolichopodidae sensu lato), with redescription of the Eocene genus Meghyperiella Meunier, pp. 411-427 in Zootaxa 5150 (3) on pages 420-421, DOI: 10.11646/zootaxa.5150.3.6, http://zenodo.org/record/662312
Pristinmicrophor Tang, Shi, Wang & Yang
No full textPristinmicrophor Tang, Shi, Wang & Yang Pristinmicrophor Tang, Shi, Wang & Yang, 2019: 2. Type species: P. hukawngensis Tang, Shi, Wang & Yang, 2019, by original designation. Included species. Pristinmicrophor hukawngensis Tang, Shi, Wang & Yang, 2019 (Hukawng Valley, northern Myanmar; lowermost Cenomanian, Upper Cretaceous). Remarks. The genus Pristinmicrophor was established to include a single species (P. hukawngensis) found from the amber of northern Myanmar (Tang et al. 2019). The genus was not properly defined. The authors indicated three characters in their view that distinguished this taxon from other microphorines: pterostigma present, small cell br and vein M 2 absent. However, all these characters are present in other microphorines. According to the original description, P. hukawngensis exhibits an interesting mosaic of characters. This species is relatively plesiomorphic in the following features: antenna placed near middle of head (fig. 2A), stylus two-articled, eyes bare, two pairs of scutellar setae, Sc fused to costa, bm-cu vein complete, long CuA+CuP (anal vein) extending almost to wing margin (fig. 2C), female tergite 10 with spine-like setae. However, the following characters are apomorphies: male eyes dichoptic, complete precoxal bridge, cell dm very narrow and almost parallel-sided, vein M 2 absent. In addition, the authors mentioned an incomplete costa ending at R 4+5 that, however, is not evident on the photos of figure 1 (Tang et al. 2019: 2). The shape of the discal cell is probably an autapomorphy of Pristinmicrophor. In P. hukawngensis, the discal cell is unusually narrow and almost parallel-sided (versus distinctly broadened toward apex) (Tang et al. 2019: fig. 2C). A complete prothoracic precoxal bridge (prosternum fused laterally with proepisternum), described in P. hukawngensis, has never been found in microphorines. The prosternum is isolated in Microphor, Schistostoma and Meghyperiella, but its condition is unknown in Microphorites, Avenaphora and Curvus. Almost all recent Parathalassiinae (except Plesiothalassius Ulrich and Amphithalassius Ulrich) and all Dolichopodidae sensu stricto have a precoxal bridge. In addition, this condition is present in Electrophorella Cumming & Brooks known from Baltic amber (Cumming & Brooks 2002, 2019). Archichrysotus and Cretomicrophorus described by Negrobov (1978) from Cretaceous resins of Siberia (Taymyr) have a precoxal bridge as well. However, in Retinitus, described in the same paper, the condition of this character is unknown. The presence of the precoxal bridge is considered apomorphic (Chvála 1983; Ulrich 1991; Cumming & Brooks 2002, 2019; Ulrich 2004). However, this character shows some variations in Dolichopodidae sensu lato and is homoplasious in the Empidoidea on the whole (Ulrich 1991: 213, character 10; Sinclair & Cumming 2006: 30, character 30). In P. hukawngensis, Tang et al. (2019) describe the precoxal bridge as “complete, narrow”. The male of P. hukawngensis has dichoptic head structure (there is a little confusion on this character between the description and discussion, but we follow the former), with eye margins converging toward antennae. Amongst microphorines, this condition was described in Avenaphora (Cumming & Grimaldi 1999) and, probably, in Curvus (Kaddumi 2007). Dichoptic eyes are present in all male Parathalassiinae (including fossils) and, with very few exceptions, in Dolichopodidae sensu stricto. Traditionally, the dichoptic head structure of the male in Microphorinae, Parathalassiinae and Dolichopodidae sensu stricto was viewed as apomorphic (versus holoptic) (Hennig 1971; Chvála 1983; Cumming & Brooks 2002). Although, Ulrich (1991) considered that this character cannot be definitely appraised. In the remaining Empidoidea it is highly homoplasious (Sinclair & Cumming 2006: 21, character 1), sometimes, even within one genus and subgenus (e.g., Empis). The wing of Pristinmicrophor hukawngensis has only two M veins beyond the discal cell. However, vein M 2 is absent, or M 1+2 unforked, in Meghyperiella (assigned to Microphorinae), four genera of Parathalassiinae (extinct Archichrysotus and Retinitus, extant Chimerothalassius Shamshev & Grootaert and Neothalassius Brooks & Cumming) and in Dolichopodidae sensu stricto (M 1+2 forked in Sciapodinae). In addition, Ulrich (1991) noted that a tendency for the reduction of M 2 is present in Plesiothalassius flavus Ulrich. This pattern suggests that the reduction of M 2 has occurred several times within Dolichopodidae sensu lato. It is likely that even within microphorines this character evolved independently twice because there is no evidence of closer relationships between Meghyperiella and Pristinmicrophor. To conclude, Pristinmicrophor shows closer affinities to Avenaphora and Curvus sharing dichoptic head structure of the male. In addition, this condition could be considered as a synapomorphy of Pristinmicrophor, Avenaphora, Curvus and Parathalassiinae + Dolichopodidae sensu stricto, i.e., the assemblage of Pristinmicrophor, Avenaphora and Curvus as the sister lineage to Parathalassiinae and Dolichopodidae sensu stricto (Cumming & Brooks 2002). However, monophyly of the Pristinmicrophor + Avenaphora + Curvus lineage is uncertain. The presence of the precoxal bridge in Pristinmicrophor could provide additional evidence for close relationship with Parathalassiinae and Dolichopodidae sensu stricto. However, the condition of this character is unknown in Avenaphora and Curvus. Considering the plesiomorphic condition of the prothorax in the parathalassiine genera Plesiothalassius and Amphithalassius, the presence of the precoxal bridge in P. hukawngensis may suggest homoplasy and conclusion about closer phylogenetic relationships of this taxon with Parathalassiinae + Dolichopodidae sensu stricto would be premature.Published as part of Shamshev, Igor V. & Perkovsky, Evgeny E., 2022, A review of fossil taxa of Microphorinae (Diptera, Dolichopodidae sensu lato), with redescription of the Eocene genus Meghyperiella Meunier, pp. 411-427 in Zootaxa 5150 (3) on pages 420-421, DOI: 10.11646/zootaxa.5150.3.6, http://zenodo.org/record/662312
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
- …
