1,354,090 research outputs found
Porrhomma borgesi Wunderlich 2008
No full textPorrhomma borgesi Wunderlich, 2008 Figs. 11A–F. Porrhomma borgesi Wunderlich, 2008 — Borges & Wunderlich (2008): p. 254, Figs. 3a–f (descr. ♂ ♀). Material examined. AZORES: Graminhais Natural Reserve, São Miguel, August 1999, 1 Ƌ 1 ♀, leg. et coll. P. Borges. Diagnosis. A large group of species is characterised by embolus of middle length and S-shaped ascending parts of copulatory ducts: P. borgesi, P. cambridgei, P. convexum, P. errans, P. nekolai, P. oblitum, P. pygmaeum and P. rosenhaueri. P. borgesi can be distinguished from all these species by the following combination of characters: CW = 0.60–0.65 mm, eyes reduced (PME–PME = 3.4), legs short (Mt I/CW = 0.88–1.00). It is the only species occurring in Azores. Description. ♀ (from Azores, São Miguel, Aug 1999). Carapace yellow-brown, 0.62 mm wide, eyes reduced, PME–PME = 3.4 (Fig. 11A). Abdomen greyish-yellow. Fe I–II with one dorsal spine, Fe I with one prolateral spine. Ti I with one prolateral spine, Ti I–II with one retrolateral spine. Tm Mt I = 0.50, Mt I/CW = 1.00. Ascending parts of the ducts are S-shaped. Spermathecae are formed behind the ascending part of the ducts (Figs. 11C–F). Ƌ (together with female). Embolus of middle length with a narrow velum. AP has the form of a bird head (Fig. 11B). Variation. Ƌ♀. Carapace 0.60–0.65 mm wide. Tm Mt I = 0.40–0.50, Mt I/CW = 0.88–1.00 (material examined and original description). Ecology. Inhabits mainly wet mosses and detritus in laurel forests, developed on fissured basaltic rocks. Some specimens were also collected in high altitude natural grasslands (Borges & Wunderlich 2008). Global distribution. Terceira, Pico and Sao Miguel Islands, Azores (Borges & Wunderlich 2008). See Fig. 12.Published as part of Růžička, Vlastimil, 2018, A review of the spider genus Porrhomma (Araneae, Linyphiidae), pp. 1-75 in Zootaxa 4481 (1) on page 16, DOI: 10.11646/zootaxa.4481.1.1, http://zenodo.org/record/145473
Porrhomma borgesi
No full textJUSTIFICATION: Porrhomma borgesi is an endemic money spider species occurring on three islands of the Azorean archipelago: Pico, Terceira and S. Miguel (Azores, Portugal) (Borges et al. 2010). It has a small Extent of Occurrence (EOO = ca. 8,312-8,500 km²) and a very small area of occupancy (AOO = 72-124 km²). The species is only abundant in very pristine sites (e.g. sites with a high habitat quality index sensu Gaspar et al. 2011) and is rare in most sites. Currently, invasive plants (Hedychium gardnerianum and Pittosporum undulatum) are impacting some of the areas and decreasing the quality of the habitat. Based on Ferreira et al. (2016) the habitat will further decline as a consequence of climate change. Therefore, we suggest as future measures of conservation: (1) regular monitoring of the species; and (2) control of invasive species namely Hedychium gardnerianum. Based upon the inferred decline in AOO, the decline in the quality and structure of habitat in some islands and number of locations the species is assessed as Vulnerable (VU).info:eu-repo/semantics/publishedVersio
First record of the Cylapine mirid bug Fulvius borgesi Chérot, J. Ribes & Gorczyca, 2006 (Heteroptera: Miridae) in the Canary Islands.
No full textFulvius borgesi Chérot, J. Ribes & Gorczyca, 2006 (Heteroptera: Miridae) is recorded for the first time in the Canary Islands. The species was described on specimens from the Azores Islands and a record was reported later from the northern Iberian Peninsula. F. borgesi belongs to the Fulvius bisbistillatus species group, mainly including New World species, among which palaearctic F. borgesi is the exception. Therefore, it is hypothesized that F. borgesi is an alien species, introduced in the Macaronesia maybe by means of goods import from Central and South America. F. borgesi preys on a variety of non-endemic Canarian species belonging to Diptera (Syrphidae, Culicidae, Drosophilidae, among others) and Coleoptera (mainly Hydrophilidae). In La Palma, F. borgesi has been recorded for more than 15 years, thus confirming that the species is well established in this island. Prospects to explore its presence in the rest of the Canarian archipelago are needed.Se cita por primera vez Fulvius borgesi Chérot, J. Ribes & Gorczyca, 2006 (Heteroptera: Miridae) en las Islas Canarias. Esta especie fue descrita a partir de especímenes del Archipiélago de las Azores y hubo una cita posterior en el norte de la Península Ibérica. F. borgesi pertenece al grupo de especies de Fulvius bisbistillatus, que básicamente incluye especies del Nuevo Mundo, entre las cuales la paleártica F. borgesi es la excepción. Por esta razón, se hipotetiza que F. borgesi es una especie introducida en la Macaronesia, muy probablemente debido al comercio con Centro y Sudamérica. F. borgesi se alimenta de una gran variedad de presas no endémicas de las Islas Canarias pertenecientes a los órdenes Diptera (Syrphidae, Culicidae, Drosophilidae, entre otras) y Coleoptera (mayormente Hydrophilidae). En la isla de La Palma, F. borgesi ha sido hallada durante más de 15 años, confirmando que la especie está bien establecida en la isla. Se necesitan más prospecciones para verificar la presencia de esta especie en otras islas del archipiélago
Peloptulus borgesi
No full textJUSTIFICATION: Peloptulus borgesi is an endemic species of the Azores (Portugal), described from the island of S. Miguel. From the species description, it would have a very small Extent of Occurrence (4 km²) and Area of Occupancy (4 km²), which are likely underestimates, as this species probably has a wider distribution through the soil component of the island. It can be assumed that this species is affected by human activities and invasive plant species like Hedychium gardnerianum and Clethra arborea, which alter the natural structure and composition of the soil. Future climatic changes and increased risk of droughts will also affect this species. However, the present situation of this species needs to be further assessed and further research is needed into its population, distribution, threats, ecology and life history. Conservation of natural habitats and invasive species control could potentially aid this species' conservation. Based upon the incomplete knowledge regarding this species population, distribution, threats and ecology, this species is assessed as Data Deficient (DD).info:eu-repo/semantics/publishedVersio
Roncocreagris borgesi Zaragoza & Reboleira, sp. nov.
No full textRoncocreagris borgesi Zaragoza & Reboleira sp. nov. (Figs 13–22) Type material. Holotype: 3, Portugal, Sicó Massif, Santiago da Guarda, District of Leiria, Gruta da Cerâmica (39 º 55 ʹ 36.57 ʺN, 8 º 31 ʹ0 3.63 ʺW; 355 m. a.s.l), 28.XI. 2009, lgt. A.S.P.S. Reboleira (DEUA coll.). Etymology. The species is dedicated to the Portuguese biologist Professor Paulo Borges, who has greatly contributed to our knowledge of the hypogean fauna of the Azores. Diagnosis. No eyes or eye-spots. Moderately troglomorphic. Carapace with 20 setae, 6 on the posterior margin. Tergite I with 6 setae. Male cheliceral galea short and simple. Pedipalp: femur ratio about 6.0, femur as long as the movable finger; chela+ length/breadth ratio about 5.0; chelal hand widest proximad of middle, ratio movable finger/hand+ 1.4; trichobothium ist close to the middle of the finger, ratio ib–ist / ist–it 1.5, ratio isb–ist / ib– isb 1.5. Description. Medium-sized pseudoscorpion. Opisthosoma elongate, moderate troglomorphic adaptations. Opisthosoma and legs yellowish. Carapace, chelicerae and pedipalps reddish brown. Carapace longer than broad (Fig. 13). Without eyes or eye-spots. Anterior margin moderately prominent medially, epistome blunt and almost indistinguishable, with some tiny denticles not exceeding the anterior margin (Fig. 14). Chaetotaxy: 20 setae, formula 4: 4: 6: 6. Five microlyrifissures on ocular zone, two between median and posterior zones. Coxal area. Manducatory process with 3 setae. Anterior process of coxa I with simple tooth shape, long and apically pointed; medial process straight with a few denticles (Fig. 15). Pedipalpal coxa with 7 setae, pedal coxa I with 6, II: 3–4, III: 3–4, IV: 6. Tergal chaetotaxy I–X: 6: 7: 9: 9: 9: 11: 11: 10: 10: 9, most hairs lacking. Male genital area with 10 long setae on sternite II; sternite III with 10 setae, 4 of them along posterior margin of genital opening. Sternal chaetotaxy IV–X: 8: 11: 11: 13: 11: 11: 11; sternites VI and VII with 1 and 2 discal setae respectively (included in sternal formula); discal setae glandular, with visible duct. Segment XI 9 setae. Chaetotaxy of stigmata of sternites III and IV could not be checked due to partial contraction of opisthosoma. Anal cone with two dorsal and two ventral setae. Chelicerae (Figs 16–17). Palm with 6 setae; subgaleal seta 0.65 from base of movable finger. Galea short (length 0.03 mm), pointed and simple. Fixed finger with 6 small, blunt, distal denticles, resembling protuberances, and 10 normal teeth, 4 basal ones larger than the others; movable finger with 17 teeth, one large and blunt subdistal tooth, the others medium or small, dental row ending just proximad of subgaleal seta. Rallum with 8 blades, all unilaterally pinnate on anterior face, the basal one about half length of others. Serrula exterior with 31 blades, serrula interior 25 blades. Pedipalps (Figs 18–20). Trochanter, femur, distal third of the patella and the hand at base of the fingers with low granulation, more pronounced on paraxial faces. Lyrifissures as in Figs 18–20. Femur with one tiny tubercle distad of middle of antiaxial face, one distal glandular pore present. Patella with one micropore at base of pedicel. Chelal hand oval shaped in dorsal view, maximum width proximad of middle; pedicel bears one dorsal micropore; antiaxial face, close to finger base, bears an irregular row of 4 glandular pores. Fixed finger with 93 teeth, most of them apically cusped, dental row reaching up to level of trichobothrium esb; nodus ramosus short, at level of 4 th distal tooth; trichobothrium it proximad of et, distinctly closer to est than to et; trichobothrium ist closer to base of finger than to apex; distance between trichobothria ib and ist 1.5 times longer than that between ist and it; distance between trichobothria isb and ist 1.5 times longer than that between isb and ib. Chelal microsetae pattern with all groups present, extending distad of trichobothrium isb, Em 3–4, Mm 3, Im 1. Movable finger with 85 teeth, most of them apically cusped, dental row shorter than on fixed finger, ending distad of trichobothrium b; distance between trichobothria sb and st 1.2 times longer than that between sb and b. One sensillum near tip of both fingers; diploid sensillum pc not raised, close to dental margin, level with trichobothrium sb. Legs. Claws of legs I and IV with a tiny dorsal tooth proximad of middle (Fig. 21), subterminal setae with three rami (Fig. 22). Leg IV tibia TS 0.44, basitarsus TS 0.22, telotarsus TS 0.24. Measurements and ratios. Body 2.1. Carapace 0.85 / 0.64 (1.3). Chelicera: palm 0.49 / 0.24 (2.0), movable finger 0.33. Pedipalp: trochanter 0.66 / 0.19 (3.5); femur 1.15 / 0.19 (6.1); patella 1.06 / 0.23 (4.6), pedicel 0.29, club 0.77 / 0.23 (3.4), ratio club/pedicel: 2.7; chela+ 1.98 / 0.39 (5.0), chela - 1.84 / 0.39 (4.7); hand+ 0.85 (2.2), hand - 0.71 (1.8); movable finger 1.16; ratio finger/hand+ 1.4; ratio chela+/carapace 2.3; femur/carapace 1.4; finger/femur 1.0; femur/patella 1.1; patella/ hand+ 1.2. Leg I: femur 0.57 / 0.11 (5.2); patella 0.41 / 0.12 (3.3); tibia 0.53 /.009 (5.6); basitarsus 0.26 / 0.08 (3.5); telotarsus 0.40 / 0.06 (6.9); ratio femur/patella 1.4; telotarsus/basitarsus 1.5. Leg IV: both femoris contracted and not measurable, patella 0.51 / 0.22 (2.4); tibia 0.88 / 0.11 (8.2); basitarsus 0.33 / 0.09 (3.4); telotarsus 0.49 / 0.07 (5.1); ratio telotarsus/basitarsus 1.5. Remarks. Among the species with 6 setae or more on posterior margin of carapace and tergite I, the new species shares with R. aurouxi Zaragoza, 2000 (from Cantabria, Spain) the simple shape of the cheliceral galea, although it should be noted that the types of the two species belong to different sexes (only the female is known for R. aurouxi). Also, both species have relatively low ratios for pedipalpal femur and chela for hypogean species of the genus. However, they differ in the chelal movable finger/hand ratio, which is 1.4 in R. borgesi vs 1.7 in R. auroxi; moreover the chelal finger length is almost equal than the femur in the new species, but distinctly longer in R. aurouxi. Distribution and habitat. Only known from the type locality in Sicó massif, Roncocreagris borgesi sp. nov. was collected in the deepest galleries of Cerâmica Cave, where relative humidity is around 100 % throughout the year and mean temperature at soil level is 15.3 ºC. The presence of two hypogean pseudoscorpion species, R. blothroides and R. borgesi, in the same cave is infrequent but not unknown (e.g. Zaragoza 2007). Due to the moderate troglomorphism and scarce occurrence of R. borgesi in the cave, compared to R. blothroides, we suggest that this species might predominantly occur in the mesovoid shallow substratum, rather than in the cave itself. Cerâmica Cave is the richest one of central Portugal in terms of known troglobiont fauna, harboring 10 caveadapted species: 3 pseudoscorpions, 1 spider, 1 millipede, 3 oniscidean woodlice, 1 dipluran and 1 beetle (Reboleira, 2012). Among the cave-adapted species, the pseudoscorpions R. blothroides, R. borgesi sp. nov. and Chthonius sp., the spider Lepthyphantes sp. and the rove-beetle Domene lusitanica Reboleira & Oromí, 2011 are macro- and micropredators, while a new species of chordeumatid millipede, the woodlice Porcellio cavernicolus Vandel, 1964 and two trichoniscids, together with the dipluran Podocampa cf. fragiloides Silvestri, 1932, play a detritivorous role in this subterranean ecosystem (Reboleira et al. 2011 a, 2011 b). Other interesting troglophile species have stable populations in this biocoenosis, such as the gastropod Oxychilus draparnaldi (Beck, 1837), the centipede Lithobius pilicornis Newport, 1844 and the ground beetle Trechus fulvus Dejean, 1831.Published as part of Reboleira, Ana Sofia P. S., Zaragoza, Juan A., Gonçalves, Fernando & Oromí, Pedro, 2013, On hypogean Roncocreagris (Arachnida: Pseudoscorpiones: Neobisiidae) from Portugal, with descriptions of three new species, pp. 283-299 in Zootaxa 3670 (2) on pages 289-291, DOI: 10.11646/zootaxa.3670.2.11, http://zenodo.org/record/21987
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
No full text“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
No full textWe 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
No full textWe 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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