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FIGURES 16–17. Leptogenys breviceps Viehmeyer. 16 in Leptogenopapus mirabilis, a new genus and species of Lomechusini (Coleoptera: Staphylinidae, Aleocharinae) from Papua New Guinea associated with ants of the genus Leptogenys Roger
No full textFIGURES 16–17. Leptogenys breviceps Viehmeyer. 16, head, dorsal; 17, habitus, lateral.Published as part of Č, Peter Hlavá & Janda, Milan, 2009, Leptogenopapus mirabilis, a new genus and species of Lomechusini (Coleoptera: Staphylinidae, Aleocharinae) from Papua New Guinea associated with ants of the genus Leptogenys Roger, pp. 57-64 in Zootaxa 2062 on page 63, DOI: 10.5281/zenodo.18684
FIGURES 11–15 in Leptogenopapus mirabilis, a new genus and species of Lomechusini (Coleoptera: Staphylinidae, Aleocharinae) from Papua New Guinea associated with ants of the genus Leptogenys Roger
No full textFIGURES 11–15. Details of Leptogenopapus mirabilis sp. n. (holotype). 11, right maxilla, ventral; 12, right mandible, ventral; 13, left paramera, dorsal; 14, median lobe of aedegus, dorsal; 15, median lobe of aedegus, lateral.Published as part of Č, Peter Hlavá & Janda, Milan, 2009, Leptogenopapus mirabilis, a new genus and species of Lomechusini (Coleoptera: Staphylinidae, Aleocharinae) from Papua New Guinea associated with ants of the genus Leptogenys Roger, pp. 57-64 in Zootaxa 2062 on page 62, DOI: 10.5281/zenodo.18684
Leptogenys breviceps Viehmeyer 1914
No full textHost ant Leptogenys breviceps Viehmeyer, 1914 (Figs. 16, 17) Leptogenys is a large genus of Ponerinae ants containing about 259 described species (Bolton et al. 2006) distributed in tropics of all zoogeographic regions. All Leptogenys species are predators feeding on other arthropods but many species developed different strategies for hunting (Steghaus-Kovac & Maschwitz 1993). There are only about ten species reported to hunt collectively, exhibiting the legionary behavior. All are known from the tropical Asia and Australia (Queensland) (Hölldobler & Wilson 1990). The holotype of Leptogenys breviceps comes from eastern Papua New Guinea (Wareo, Morobe province). This species is considered to be a member of L. processionalis „group“, containing species with mostly Indo-Malayan distribution (Wilson 1958 b). Ants related to L. processionalis (Jerdon, 1851) are believed to conduct group raides when searching for prey (Wilson 1958 a). The second author also witnessed group raiding behavior in L. breviceps during foraging, although predation was not directly observed. The investigated colony of L. breviceps was nesting in soil in the vicinity of a small pathway through grass undergrowth. The nest had multiple entrance holes and groups of ants were running among them. The surrounding vegetation was as a mixture of abandoned and active gardens, covered by patches of secondary re-growth forest, 5–15 years old. Wilson (1958 b) reported L. breviceps from a secondary forest, as well as from a primary forest.Published as part of Č, Peter Hlavá & Janda, Milan, 2009, Leptogenopapus mirabilis, a new genus and species of Lomechusini (Coleoptera: Staphylinidae, Aleocharinae) from Papua New Guinea associated with ants of the genus Leptogenys Roger, pp. 57-64 in Zootaxa 2062 on page 60, DOI: 10.5281/zenodo.18684
Staphylinidae
No full textChecklist of Staphylinidae associated with Leptogenys Leptogenys sp. Wroughtonilla watanabei Maruyama, 2004 (Lomechusini). Laos. Zyras trapeziceps Dvořák, 1996 (Lomechusini). Northern Vietnam. Leptogenys breviceps Viehmeyer, 1914 Leptogenopapus mirabilis sp. n. (Lomechusini). Papua New Guinea. Myrmedonota sp. (Lomechusini). Papua New Guinea. Unknown genus (Paederinae). Papua New Guinea. Leptogenys diminuta (F. Smith, 1857) Neowroughtonilla steghausae Kistner, 1989 (Lomechusini). Malaysia (Selangor, Ulu Gombak). Wroughtonilla lobopeltae Wasmann, 1899 (Lomechusini). India, Sri Lanka, Malay peninsula. = Astilbus migratorius Fauvel, 1903 Leptogenys sp. near diminuta Leptogenophilus judithae Kistner, 1975 (Hoplandriini, new placement (Maruyama, personal communication)). Philippines (Luzon). Leptogenoxenus wilsoni Kistner, 1975 (Lomechusini). Philippines (Luzon). Leptogenys processionalis distinguenda (Emery, 1887) Maschwitzia ulrichi Kistner, 1989 (Lomechusini). Malaysia (Selangor, Ulu Gombak). = Trachydonia leptogenophila Kistner, 2003 Leptogenys sp. near mutabilis (F. Smith, 1861) Maschwitzia ulrichi Kistner, 1989 (Lomechusini). Malaysia (Selangor, Ulu Gombak). = Trachydonia leptogenophila Kistner, 2003 Togpelenys gigantea Kistner, 1989 (Lomechusini). Malaysia (Selangor, Ulu Gombak).Published as part of Č, Peter Hlavá & Janda, Milan, 2009, Leptogenopapus mirabilis, a new genus and species of Lomechusini (Coleoptera: Staphylinidae, Aleocharinae) from Papua New Guinea associated with ants of the genus Leptogenys Roger, pp. 57-64 in Zootaxa 2062 on pages 61-63, DOI: 10.5281/zenodo.18684
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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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