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The Lycocerus hanatanii species group is revised, with the addition of seven taxa: L. araticollis (Fairmaire, 1897), L. nigripennis (Pic, 1938), L. griseopubens (Pic, 1928), L. yitingi Hsiao & Okushima sp. nov., L. aurantiacus Hsiao & Okushima sp. nov., L. evangelium Hsiao & Okushima sp. nov. and L. kintaroi Hsiao & Okushima sp. nov. Supplementary descriptions of the males of L. araticollis and L. griseopubens are provided. Lycocerus nigripennis (Pic, 1938) and L. pictus (Wittmer, 1983) are redescribed in detail. Each species is provided with photos or illustrations of genitalia of both sexes and abdominal ventrite VII of the female if available. Distribution maps and a key to the species of the L. hanatanii species group are presented. In addition, the monophyly of the L. hanatanii species group is supported based on a morphological phylogenetic analysis.
The land snail genus Amphidromus Albers, 1850 and its subgenus Syndromus Pilsbry, 1900 (family Camaenidae) in Laos are revised. Fourteen species from various habitats of deciduous forest and limestone areas throughout Laos are confirmed. The classification is revised and discussed, based on material examined from Laos, Cambodia, Vietnam and Thailand and after comparison with the type specimens in many museums. Two new species, A. (Amphidromus) syndromoideus Inkhavilay & Panha sp. nov., from central Laos, and A. (Syndromus) xiengkhaungensis Inkhavilay & Panha sp. nov., from northern Laos, are described and discussed.
Sommergrüne Laubwälder Südwest-Europas umfassen eine größere Breite von Vegetationstypen, abhängig von verschiedenen edaphischen und klimatischen Faktoren. Von diesen Wäldern werden hier nur mesophytische und submediterrane (subhumide) Eichen- und Eschenwälder besprochen; sowohl Buchenwälder als auch alle Gesellschaften azidotoleranter Wälder sind ausgeschlossen. Es können zwei Haupttypen unterschieden werden:
Die erste Gruppe wird gebildet von Quercus robur, Fraxinus excelsior, Corylus avellana, Acer pseudoplatanus und A. campestre; sie wächst auf basenreichen Böden (pH gewöhnlich zwischen 6 und 7) aus Kalken, Mergeln oder entsprechenden Sedimenten. Die Böden sind oft reich an Ton oder Schlick und besitzen eine reiche Wirbellosenfauna, insbesondere aus Regenwürmern. Die Wälder sind verbunden mit Waldmänteln der Prunetalia. Ihr Unterwuchs enthält zahlreiche Arten, z.B. Polystichum setiferum, Dryopteris borreri, Brachypodium sylvaticum, Mercurialis perennis, Carex sylvatica u.a. Sie sind in Kalkgebieten der Britischen Inseln, Westfrankreichs, der Pyrenäen und des Kantabrischen Gebirges weit verbreitet. Ihr Areal reicht von Schottland bis ins westliche Asturien (sie fehlen in Galizien und Nord-Portugal).
Die zweite Gruppe besteht vorwiegend aus Quercus pubescens (Q. humilis) und Q. faginea. Sie wächst ebenfalls auf kalkreichen Böden unter submediterranem Klimaeinfluss. Weitere Baumarten sind Abies pinsapo, Acer granatense, A. monspessulanus, A. opalus, Colutea arborescens, Fraxinus ornus, Sorbus torminalis und S. domestica. Die Strauchschicht ist infolge hohen Lichtgenusses und guter Böden artenreich und dicht; in ihr wachsen viele Arten der Prunetalia, vor allem Prunus spinosa, Rosa- und Rubus-Arten. Spezifisch sind weit verbreitete submediterrane Arten wie Amelanchier ovalis, Coronilla emerus, Lonicera etrusca, Prunus mahaleb, Viburnum lantana u.a. Die Krautschicht ist ebenfalls artenreich. Sie teilt viele Arten mit anderen Laubmischwäldern, hat aber auch einige charakteristische Eigenheiten wie Helleborus foetidus, Campanula persicifolia, Digitalis lutea, Melittis melissophyllum, Viola alba u.a. Solche Wälder sind in Südeuropa weit verbreitet, vom Balkan über Alpen und Apennin bis zur Iberischen Halbinsel. Im Südwestteil des Kontinents kommen sie von Süd-Frankreich bis Süd-Spanien (nicht in Portugal) vor. In Süd-Spanien sind sie auf Kalkgebirge beschränkt, wo die extremen Bedingungen des mediterranen Klimas etwas abgeschwächt sind.
Twenty new species are described in Pentilia Mulsant (Coleoptera: Coccinellidae: Scymninae: Cryptognathini) by Gordon and González: Pentilia bernadette, P. chelsea, P. dianna, P. elena, P. ernestine, P. estelle, P. kari, P. jasmine, P. jody, P. kendra. P. krystal, P. lora, P. mable, P. muriel, P. nichole, P. nadine. P. paulette, P. rachael, P. sadie and P. traci. A lectotype is here designated for Pentilia egena Mulsant.
Species of Calloeneis Grote (Coleoptera: Coccinellidae) are discussed, and a key to all recognized species is provided. New species described are C. alexandra, C. angelica, C. blanca, C. bennetti, C. bethany, C.brooke, C. francis, C. jacquelin, C. johnnie, C. kara, C. krista, C. leticia, C. lynne, C. robyn, C. marianne, C. myra,C. rosalie, C. roxanne and C. sheri, all authored by Gordon and Hanley.
A review and illustrated key to Linsley, 1936 (Coleoptera: Cerambycidae: Elaphidiini) of the United States and Canada is provided, along with taxonomic and distributional notes. Gymnopsyra Linsley, 1937, is a new synonym of Anelaphus. Gymnopsyra chemsaki Linsley, 1963 is a new synonym of Gymnopsyra magnipunctatus (Knull, 1934). Anelaphus hoferi (Knull, 1934) and Anelaphus tuckeri (Casey, 1924) are new synonyms of Anelaphus simile (Schaeffer, 1908). Anelaphus parallelus (Newman, 1840), Anelaphus rusticus (LeConte, 1850), and Anelaphus davisi Skiles, 1985 are new synonyms of Anelaphus villosus (Fabricius, 1792). Anelaphus aspera (Knull, 1962), Anelaphus bupalpa (Chemsak, 1991), and Anelaphus magnipunctatus (Knull, 1934) are all new combinations. Anelaphus brummermannae Lingafelter, new species, is described from Arizona.
Marginal associations, i.e. floristically impoverished associations at the margin of the distribution area of a higher syntaxon, form a problem in vegetation classification, because true character species are lacking. We propose a new approach for the classification of such marginal associations, making use of the notion of 'chorological tension zones'. In the absence of true character species, the species from other syntaxa of the same formation can be used as such. Our proposal is to use the species group from every formation-true class only once within every marginal alliance, to limit the number of possible marginal associations. This approach is illustrated in a classification of the retamoid thickets in the Netherlands. On the basis of a numerical-subjective classification of the relevant species in the scrub layer and the evaluation of relevant literature, we conclude that the broom and gorse thickets in the Netherlands can be assigned to the Cytisetea scopario-striati Rivas-Mart. 1974, which is represented by four associations, each of which is characterised by the species of other scrub classes. The Ulici europaei-Sarothamnion scoparii Doing ex Weber 1997 is represented by the Rubo plicati-Sarothamnetum scoparii Weber 1987 and the Crataego monogynae-Cytisetum scoparii R. Haveman, I. de Ronde & J.H.J. Schaminée ass. nov., the Ulici europaei-Cytision striati Rivas-Mart., Báscones, Díaz, Fern. Gonz. & Loidi 1991 by the Frangulo alni-Ulicetum europaei De Foucault 1988 and the Rubo ulmifolii-Ulicetum europaei J.-M. Géhu ex R. Haveman, I. de Ronde & J.H.J. Schaminée ass. nov. This classification is based on a restricted dataset though, and a revision, based on a larger dataset from a wider region has to prove the tenability of the classification.
The selection of features for classification, clustering and approximation is an important task in pattern recognition, data mining and soft computing. For real-valued features, this contribution shows how feature selection for a high number of features can be implemented using mutual in-formation. Especially, the common problem for mutual information computation of computing joint probabilities for many dimensions using only a few samples is treated by using the Rènyi mutual information of order two as computational base. For this, the Grassberger-Takens corre-lation integral is used which was developed for estimating probability densities in chaos theory. Additionally, an adaptive procedure for computing the hypercube size is introduced and for real world applications, the treatment of missing values is included. The computation procedure is accelerated by exploiting the ranking of the set of real feature values especially for the example of time series. As example, a small blackbox-glassbox example shows how the relevant features and their time lags are determined in the time series even if the input feature time series determine nonlinearly the output. A more realistic example from chemical industry shows that this enables a better ap-proximation of the input-output mapping than the best neural network approach developed for an international contest. By the computationally efficient implementation, mutual information becomes an attractive tool for feature selection even for a high number of real-valued features.
A brief account of the present state of weevil taxonomy is followed by a detailed study of certain structures used in their classification, namely the venter, abdominal tergites, sternite 8 of the male, apex of the hind tibia and deciduous mandibular processes. A key to some 50 families and subfamilies of Curculionoidea is followed by a list of family-group taxa. The following changes are made: Brachyceridae, Erirhinidae. Cryptolnryngidae und Raymondionymidae are promoted to family rank from Curculiollidne; Antliarhininae is demoted to a subfamily of Brentidae, and Allocoryninae to a subfamily of Oxycorynidne; Coptonotini is demoted to a tribe of Curculionidue Scolytinae; Carinae, sufam. n. is erected for Car Blackburn (genus incertae sedis) in Belidae; Dinomor'phini is demoted to a tribe of Molytinae and Brachyccropsidinae is revived from synonymy with Dinomorphinae (Curclliionidae); Urachyderini, Eremnini, Otiorhynchini and Sitonini are demoted to tribes of Entiminue; Desmidophorinae is transferred from Brentidae to Brachyccridae, Ocladiini is promoted to a tribe of Desmidophorinae (from Curculionidae-Cryptorhynchinae); Campyloseelini (including Phaenomerina) is transferred from Rhynchophoridae to Curculionidae-Zygopinae; Carphodicticinae is promoted to subfamily rank and transferred from Curculionidae-Scolytinae to Platypodidae; Perieges; Schönherr is transferred from Curculionidae-Thecesterninae to Cryptoiaryngidae and Agriochaeta Pascoe from Cryptorhynchinae to Hyperinae (Curculionidae); Schadlarius Wood and Mecopelmus Blackman are transferred from Coptonotidae to Platypodidae.
In the lower siliceous uplands of Central Europe, various types of nutrient-poor grasslands are widespread and grow intermingled. These species-rich grasslands, often dominated by taxa of the Festuca ovina aggregate, comprise various phytosociological classes. They are remnants of a historic rural lands - cape and are of conservation importance. Few studies on such grasslands are available and there has been disagreement in assigning them to appropriate habitat types or syntaxa. We investigated such nutrient-poor grasslands in the lower Aar valley (Middle Hesse, Rhenish Massif). We surveyed 104 vegetation plots distributed throughout the valley and identified syntaxa to (sub)association level. We carried out supervised classification combining cluster analysis, a priori assignment to classes based on prevailing diagnostic species, and regional refinement based on phi-value maximisation of the units. As a result, we classified five associations within four classes: Polytricho piliferi-Festucetum tenuifoliae/Galio harcynici-Deschampsietum flexuosae and Festuco rubrae-Genistelletum sagittalis (Calluno- Ulicetea), Jasiono montanae-Festucetum ovinae (Koelerio-Corynephoretea), Gentiano-Koelerietum pyramidatae (Festuco-Brometea) and Arrhenatheretum elatioris (Molinio-Arrhenatheretea). Ecologically, soil acidity (resulting from Ca concentrations of the bedrock) was the main cause of floristic dissimilarity of the grasslands and thus community differentiation. Many stands grew on soils with intermediate pH and showed a peculiar mixture of basiphilous and acidophilous species. We conclude that (i) our approach of supervised classification yields convincing reproducible results when a syntaxonomic system is adapted top-down to a geographically restricted area, (ii) nutrient-poor siliceous grasslands dominated by taxa of the Festuca ovina aggregate can be well assigned to ecologically meaningful syntaxa, and (iii) the nutrient-poor siliceous grasslands of the Lahn-Dill Highlands are of high conservation relevance and in urgent need of protection.