1,721,007 research outputs found
FIGURES 1–2 in New species of cynipid inquiline, Saphonecrus kuriphilusi (Hymenoptera: Cynipidae: Synergini), from Dryocosmus kuriphilus galls in Greece
No full textFIGURES 1–2. Saphonecrus kuriphilusi, new species, female: 1, female, general view (rc, radial cell), 2, metasoma, dorsal view.Published as part of Melika, George, Memtsas, George I., Nicholls, James A. & Avtzis, Dimitrios N., 2018, New species of cynipid inquiline, Saphonecrus kuriphilusi (Hymenoptera: Cynipidae: Synergini), from Dryocosmus kuriphilus galls in Greece, pp. 109-120 in Zootaxa 4441 (1) on page 113, DOI: 10.11646/zootaxa.4441.1.6, http://zenodo.org/record/130193
FIGURES 21–28. 21–24 in New species of cynipid inquiline, Saphonecrus kuriphilusi (Hymenoptera: Cynipidae: Synergini), from Dryocosmus kuriphilus galls in Greece
No full textFIGURES 21–28. 21–24, Mesosoma, dorsal view, female: 21, Saphonecrus barbotini, 22, S. gallaepomiformis, 23, S. connatus, 24, S. symbioticus. 25–28, metasoma, lateral view, female: 25, Saphonecrus barbotini, 26, S. gallaepomiformis, 27, S. connatus, 28, S. symbioticus.Published as part of Melika, George, Memtsas, George I., Nicholls, James A. & Avtzis, Dimitrios N., 2018, New species of cynipid inquiline, Saphonecrus kuriphilusi (Hymenoptera: Cynipidae: Synergini), from Dryocosmus kuriphilus galls in Greece, pp. 109-120 in Zootaxa 4441 (1) on page 116, DOI: 10.11646/zootaxa.4441.1.6, http://zenodo.org/record/130193
FIGURES 3–8 in New species of cynipid inquiline, Saphonecrus kuriphilusi (Hymenoptera: Cynipidae: Synergini), from Dryocosmus kuriphilus galls in Greece
No full textFIGURES 3–8. Saphonecrus kuriphilusi, new species, female: 3–5, head: 3, frontal view, 4, dorsal view, 5, posterior view. 6, antenna. 7, mesosoma, dorsal view. 8, metascutellum and propodeum, posterodorsal view.Published as part of Melika, George, Memtsas, George I., Nicholls, James A. & Avtzis, Dimitrios N., 2018, New species of cynipid inquiline, Saphonecrus kuriphilusi (Hymenoptera: Cynipidae: Synergini), from Dryocosmus kuriphilus galls in Greece, pp. 109-120 in Zootaxa 4441 (1) on page 114, DOI: 10.11646/zootaxa.4441.1.6, http://zenodo.org/record/130193
Effective Defense of Aleppo Pine Against the Giant Scale Marchalina hellenica Through Ecophysiological and Metabolic Changes
No full textAleppo pine (Pinus halepensis) is widely distributed in the Mediterranean region and in other areas of the world, where it has been introduced due to its adaptive capacity to xerothermic conditions. The giant pine scale Marchalina hellenica often infests Aleppo pine, as well as other pines, in several southeastern European countries, causing pine declines. When combined with the expected intensified heat and drought events in eastern Mediterranean, the impact of this biotic parameter on the host pines may be exacerbated. The importance of understanding the defense mechanisms of Aleppo pine is emphasized by the recent invasion of the pine scale in new regions, like Australia, lacking the insect’s natural enemies, where more intense negative effects on pine species may occur. To date, Aleppo pine’s physiological responses to the infestation by M. hellenica are largely unknown. This study aimed at assessing the responses of Aleppo pine to the giant pine scale attack, both on an ecophysiological and a metabolic level. For this purpose, gas exchange, needle water status, and carbon and nitrogen content were measured during 1 year on healthy and infested adult trees. M etabolic profiling of Aleppo pine needles was also performed before, during, and after the high feeding activity of the insect. The maintenance of stable relative water content, δ13C signatures, and chlorophyll fluorescence in the needles of infested pines indicated that infestation did not induce drought stress to the host pines. At the peak of infestation, stomatal closure and a pronounced reduction in assimilation were observed and were associated with the accumulation of sugars in the needles, probably due to impaired phloem loading. At the end of the infestation period, tricarboxylic acids were induced and phenolic compounds were enhanced in the needles of infested pines. These metabolic responses, together with the recovery of photosynthesis after the end of M. hellenica intense feeding, indicate that in the studied region and under the current climate, Aleppo pine is resilient to the infestation by the giant pine scale. Future research should assess whether these promising defense mechanisms are also employed by other host pines, particularly in regions of the world recently invaded by the giant pine scale, as well as under more xerothermic regimes
Ormyrus Westwood 1832
No full textGenus <i>Ormyrus</i> Westwood, 1832 <p> <i>Ormyrus</i> Westwood, 1832: 127 (type species: <i>Ormyrus punctiger</i> (Westwood 1832: 127), by monotypy).</p> <p> <i>Siphonura</i> Nees, 1834: 81. (type species <i>Siphonura variolosa</i> (Nees 1834: 81), by subsequent designation of Gahan & Fagan (1923)). Synonymy by von Dalla Torre (1898): 282.</p> <p> <i>Periglyphus</i> Boheman, 1838: 378 (type species <i>Periglyphus gastris</i> (Boheman 1838: 378), by monotypy). Synonymy by von Dalla Torre (1898): 282.</p> <p> <i>Cyrtosoma</i> Perris, 1840: 96. (type species <i>Cyrtosoma papaveris</i> (Perris 1840: 96) by monotypy). Synonymy by Bouček (1988): 155.</p> <p> <i>Monobaeus</i> Förster, 1860: 95. Type species <i>Monobaeus cingulatus</i> (Förster 1860: 95) by subsequent designation by Ashmead (1904): 245. Synonymy by Bouček (1988): 155.</p> <p> <i>Tribaeus</i> Förster, 1860: 93. Type species <i>Tribaeus punctulatus</i> (Förster 1860: 93), by monotypy. Synonymy by Bouček (1988): 155.</p> <p> <i>Chrysoideus</i> De Stefani, 1898: 172. Type species <i>Torymus</i> (<i>Chrysoideus</i>) <i>chrysidiformis</i> (De Stefani 1898: 172), designated by Gahan & Fagan (1923): 34. Synonymy by Bouček (1988): 155.</p> <p> <i>Wania</i> Risbec, 1951: 294. Type species <i>Wania ornata</i> (Risbec 1951: 294), by monotypy. Synonymy by Risbec (1954): 535.</p> <p> <i>Avrasyamyrus</i> Doganlar, 1991: 7. Type species <i>Ormyrus orientalis</i> Walker, 1871, by original designation. Synonymy by Hanson (1992): 1335 –1336.</p>Published as part of <i>Koutsoukos, Evangelos, Compton, Stephen G., Noort, Simon van, Avtzis, Dimitrios N. & Askew, Richard R., 2024, A new species of Ormyrus Westwood (Hymenoptera, Ormyridae) developing in figs of Ficus microcarpa in Europe, pp. 170-193 in European Journal of Taxonomy 917</i> on page 174, DOI: 10.5852/ejt.2024.917.239
Shallow Genetic Structure among the European Populations of the Six-Toothed Bark Beetle Ips sexdentatus (Coleoptera, Curculionidae, Scolytinae)
Full text linkThe six-toothed bark beetle, Ips sexdentatus, is one of the most abundant scolytid species of the central and southern European countries. It mostly feeds on Pinus sp., whereas during population outbreaks it can also attack Picea sp. In spite of its broad distribution, its phylogeography has never been studied before. To do that, we employed an mtDNA marker on 489 individuals that covered most of its native range in Europe. Geographic distribution of the 86 haplotypes showed that at least three glacial refugia have played a significant role in shaping the currently observed pattern of genetic divergence in Europe, without excluding the contribution of minor refugial areas that acted in a similar manner. The revealed shallow structure can be considered an artifact of factors that reduced intraspecific diversity, at the same time favoring gene flow. As such, biological traits of the species itself (flying ability and host preference) and even human-mediated transport of wood seem to be the most prevailing and probable reasons that gave rise to the observed pattern.Austrian Science Fund FWF (project number P26749-B25)
Pselaphogenius treskanus
No full text<i>Pselaphogenius treskanus</i> (Karaman, 1940) <p>Figs 2D – 6D, 7G, F</p> <p> <b>Material studied.</b> 2 ♁♁, 18 exx., with one label “ GREECE [GR 004], 20.vi.2021 / OROS VITSI, 2km SW DROSOPIGI Vill. / N40°40’13.4’’ E21°26’00.8’’ / sifting in <i>Fagus</i> forest along stream / 1062m, Winkler app. Extraction / P. Baňař, P. Hlaváč & A. Balázs lgt.” [white, printed] (MMBC, PCPH); 3 ♁♁, 5 ♀♀, 37 undetermined sex, with one label “ GREECE [GR 010], 21.vi.2021 / OROS VITSI, 2km SE of OXYA Vill. / N40°37’17.4’’ E21°22’32.7’’ / sifting in Fagus forest, 1599m / Winkler app. extraction / P. Baňař, P. Hlaváč & A. Balázs lgt. ” [white, printed] (MMBC, PCPH). 1 ♁, 4 undetermined sex, with one label “GR. Florina, No. 28, 15 km W Florina / Oros Varnous, 1600m / 40°47’51N, 21°14’42E / 23.4.2000, V. Assing ” [white, printed] PCVB). 1 ♁, 1 undetermined sex, with one label “GR. Florina, No. 28, 15 km W Florina / Oros Varnous, 1600m / 40°47’51N, 21°14’42E / 23.4.2000, V. Assing ” [white, printed] PCVB).</p> <p> <b>Supplement description.</b> Body setation with shorter but denser hair than <i>Afropselaphus</i> (Fig. 2D); body length 2.0– 2.2 mm. Coloration largely dark brown, maxillary palpi and legs lighter, posterior margin of elytra much darker, almost black (Fig. 2D). Pilosity of body sparse; head, legs, and antennae covered by sparse, adjacent golden setae; frontal rostrum slightly bifid (Fig. 3D); eyes with 7–9 ommatidia (Figs. 3D, 4D); club of maxillary palpomere 4 elongate; ocular-mandibular carina less pronounced; median gular ridge produced into a rounded bulge (Fig. 4D), as in all congeners; metaventrite produced into pair of small protrusions (Fig. 6D); elytra with rounded external apex; elytral carinae more strongly pronounced; elytra with few rows of setae, which are denser on elytral marginal line; with row of setae on distal margin of elytra; abdomen distinctly wider than elytra; no tufts on gular plate; tufts on prothoracic-mesothoracic junction almost completely reduced, tufts on tergite 1 (IV) and sternite 2 (IV) much less dense than in other tergites; proximal margin of tergite II with very dense pilosity (Fig. 2D), remaining segment covered by sparse setae. Aedeagus (Fig. 7G, H) with single median sclerite with tapered apex.</p> <p> <b>Habitat.</b> Mt Vitsi, this species was collected from leaf litter in dense forest (Fig. 8D).</p>Published as part of <i>Davranoglou, Leonidas-Romanos, Baňař, Petr, Kakiopoulos, George, Balázs, Attila, Avtzis, Dimitrios N. & Hlaváč, Peter, 2023, Three new species of Afropselaphus Jeannel, 1950 (Staphylinidae: Pselaphinae) from Greece and a redescription of Pselaphogenius treskanus (Karaman, 1940), pp. 559-570 in Zootaxa 5351 (5)</i> on pages 568-569, DOI: 10.11646/zootaxa.5351.5.4, <a href="http://zenodo.org/record/8392291">http://zenodo.org/record/8392291</a>
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
Zusammenfassende Betrachtung über die Verbreitung und die Biologie von Cameraria ohridella Deschka & Dimic (Lep., Gracillariidae) in Griechenland
No full textAnfang der 80er Jahre wurde zum ersten Mal von SIMOVA-TOSIC & FILEV (1985) in der Nähe des Ohrid Sees (Balkan) eine unbekannte Miniermotte bei einem Massenauftretten an Aesculus hippocastanum L. festgestellt. Die neue Art wurde von DESCHKA & DIMIC (1986) Cameraria ohridella genannt. Seit dieser Erstentdeckung der Motte am Balkan lässt sich eine rasche Ausbreitung des Schädlings in Europa beobachten. Aufgrund der inzwischen erfolgten zahlreichen Veröffentlichungen ist davon auszugehen, dass bis jetzt nahezu ganz Europa, ausgenommen Skandinavien, von der Motte besiedelt wurde. In Griechenland wurde die Motte 1996 von SKUHRAVY (1999) bei Florina (Nord Griechenland) erstmals festgestellt. Ziel der vorliegenden Arbeit war, Erkenntnisse über die Biologie der Motte in Griechenland zu gewinnen. Die durchgeführten Untersuchungen beziehen sich auf die Jahre 2001 bis 2004 und wurden im Rahmen des E.U. Programms CONTROCAM durchgeführt.The horse-chestnut leaf miner, Cameraria ohridella (Lep., Gracillariidae) is a relative new pest in Europe and especially in Greece, where it was found for the first time in 1996. In the framework of the EU Program CONTROCAM, in which the Department of Forestry in Drama (Technological Educational Institute of Kavala) participates together with 7 other European partners, the study on this insect started in Greece in 2001. Until now, on-site observations showed that the insect attacks only horse chestnut trees (both wild and ornamental) in different locations in Greece. The moth has not been found on Acer monspessulanum, A. obtusatum, A. hyrcanum, A. platanoides, A. heldreichii, A. pseudoplatanus, A. tataricum, A. creticum, A. campestre (in the forests) and A. negundo (in the parks) in any occasion. From the results of live-trapping by pheromone traps at three different locations in Greece and from phenological observations, we found that this insect usually has three generations per year in Greece. Only under very favourable conditions it may develop a fourth one, like in Ioannina in the year 2003. Another very important feature refers to the differences between the moth population densities from year to year and tree to tree at the same location. These differences require further analysis in terms of the climatic conditions (first case), as well as of the quality of food (second case)
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