Sondersammelgebiets-Volltexte Biologie
20 search hits
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Description of the male of Steatoda ephippiata (Araneae: Theridiidae)
(2010)
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Johan van Keer
Robert Bosmans
- The previously unknown male of Steatoda ephippiata (Thorell, 1875) is described from recently collected
material in Tunisia. Some new distribution records for the species are added and all known records are mapped.
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Vassilevascus gen. nov., a new genus of the family Ascouracaridae Gaud & Atyeo, 1976 (Astigmata; Pterolichoidea)
(1995)
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Jacek Dabert
Rainer Ehrnsberger
- Auf der Grundlage einer Milbe aus Touessarts Sammlung wird die Vogelfedermilbe Dermoglyphus
monstrosus vom Blauwangenlori Trichoglossus haematodus cyanogrammus (Aves; Psittaciformes)
übertragen in die neue Gattung Vassilevascus gen. nov. (Astigmata; Pterolichoidea).
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Die Gattung Electrogena Zurwerra & Tomka 1985 (Ephemeroptera: Heptageniidae) im Osnabrücker Hügelland (NW-Deutschland): Taxonomie, Habitatbindung, Phänologie, Naturschutzaspekte
(1996)
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Stefan Hettlich
Peter Rasch
Thorsten Aßmann
- An 12 Bächen mit 50 Probestellen im Osnabrücker Hügelland wurde mit der "kicksampling"-
Methode und Emergenzzelten die Gattung Electrogena untersucht, Es konnte unter
den 1596 Individuen nur eine Art, E. ujhelyii (Sowa 1981), festgestellt werden. Diese Eintagsfliege
präferiert im Untersuchungsgebiet das Hypokrenal und Epirhithral. Eine negative, hochsignifikante
Korrelation zwischen der Häufigkeit und der Fließgeschwindigkeit wurde ermittelt. Für andere Parameter
(Temperatur, pH, Leitfähigkeit, Gesamt- und Carbonathärte) konnte kein signifikanter Zusammenhang
festgestellt werden. Die Emergenzperiode dauert bei E. ujhelyii mehrere Monate. Die
Fekundität liegt mit 565 bis 1550 und einem Mittelwert von 954 EiernIWeibchen für eine Eintagsfliege
niedrig. Weitere Details zur Biologie der Art werden mitgeteilt. Naturschutzrelevante Aspekte
dieser Art werden diskutiert.
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"Basar Taxonomie"? : Ein erfolgreiches Kreuzungsexperiment zu Acalles aeonii Wollaston, 1864* (Coleoptera: Curculionidae: Cryptorhynchinae)
(2005)
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Peter E. Stüben
- Als Ergebnis eines aufwendigen, aber erfolgreichen Kreuzungsexperimentes von Acalles aeonii Wollaston 1864 x Acalles bodegensis Stüben 2000 wird folgende Synonymie endgültig bewiesen: Acalles aeonii Wollaston 1864 = Acalles bodegensis Stüben 2000 syn. nov. Zucht und Kreuzung der genannten Arten werden über zahlreiche Generationen hinweg an der Entwicklungspflanze Aeonium holochrysum W. & B. detailliert beschrieben und die Ergebnisse diskutiert. Mit einer ausführlichen Diskussion zur Notwendigkeit von Kreuzungsexperimenten in der taxonomisch-systematischen Forschung.
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A new genus and two new species of Pteroplatini Thomson from Central America (Coleoptera: Cerambycidae)
(2008)
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Ian Swift
- A new genus and species in the tribe Pteroplatini Thomson, Nubosoplatus inbio Swift, and a new species of Corynellus Bates, C. lampyrimorphus Swift, are described from cloud forest habitats in Costa Rica.
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New looks at and for Onespa, Buzyges, and Librita (Lepidoptera: Hesperiidae: Hesperiinae), with new combinations and descriptions of a new genus and six new species
(2009)
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George T. Austin
Andrew D. Warren
- Thirteen species of skippers (six newly described; Lepidoptera: Hesperiidae: Hesperiinae: Hesperiini) from higher elevations of Mexico and Central America are reviewed. These are included in four genera (one newly described), some with proposed new combinations. Onespa Steinhauser, 1974, originally described as monotypic, is shown to include three species in addition to its type species, Onespa nubis Steinhauser, 1974. One of these, Atrytone gala Godman, 1900, that has been misplaced in several genera since its description, represents a new combination. The other two species, distributed in montane habitats in northwestern Mexico and in Costa Rica, are described as new. Buzyges Godman, 1900, distributed in Mexico and Central America and also formerly considered monotypic, is shown to embrace four species. Besides the type species, Buzyges idothea Godman, 1900, two species long placed in Poanes Scudder, 1872, Pamphila rolla Mabille, 1883, and Poanes benito Freeman, 1979, are included as new combinations. Another species, known only from Costa Rica, is described as new. These are united by several superficial characters, but especially by genital morphology of both sexes. Librita Evans, 1955, was described to include three species of which one, Librita raspa Evans, 1955, was subsequently removed. Augiades heras Godman, 1900 is here also removed from Librita and placed in a new genus with three previously undescribed species. This completes the disintegration of Librita, which is now monotypic. The four genera, although exhibiting similarities suggesting potential alliance, differ in their unique combinations of several superficial and genital traits from each other and other hesperiine skippers.
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Morphological separation of the Central European Trochosa females (Araneae, Lycosidae)
(2006)
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Martin Hepner
Norbert Milasowszky
- Adult females of the five Central European wolf spiders Trochosa hispanica Simon, 1870, T. robusta (Simon, 1876), T. ruricola (De Geer, 1778), T. spinipalpis (F. O. P.-Cambridge, 1895), and T. terricola Thorell, 1856 were morphologically analysed. We defined sets of continuous and binary (presence/absence) variables. Continuous data of various epigynal and carapace dimensions were subjected to Principal Components Analysis (PCA). Using the PC loadings each individual was plotted along the PC axis in order to find gaps/overlaps between the species. The binary data sets were subjected to Hierarchical Cluster Analysis (HCA) in order to find characters that clearly separate the five Trochosa species. Using PCA only individuals of T. robusta and T. ruricola and of T. robusta and T. hispanica could be separated from each other. Using HCA all five species could clearly be separated by epigynal and vulval characteristics.
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Drassodes lapidosus und Drassodes cupreus (Araneae: Gnaphosidae) - eine unendliche Geschichte
(2006)
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Angelo Bolzern
Ambros Hänggi
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untitled document
(2006)
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Martin Hepner
Norbert Milasowszky
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Saprolaelaps reticulatus nov. sp., eine neue Milbenart der Gattung Saprolaelaps Leitner, 1946 (Acari: Gamasida: Halolaelapidae)
(2000)
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Czeslaw Blaszak
Rainer Ehrnsberger
- Die Raubmilbe Saprolaelaps reticulatus nov. sp. wird beschrieben und differentialdiagnostisch von der nah verwandten Art Saprolaelaps areolatus Leitner, 1946 abgegrenzt.
