Sondersammelgebiets-Volltexte Biologie
12 search hits
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Abundant and rare spiders on tree trunks in German forests (Arachnida, Araneae)
(2011)
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Theo Blick
- The spider fauna active on the bark of trees in forests on eight sites in different regions in Germany was
investigated. Trunk eclectors at about 2-4 meters height on living trees were used in different regions of Germany
(SW Bavaria, Hesse, Brandenburg) between 1990 and 2003. In Hesse eclectors were also used on dead beech trees
(standing and lying). In this study data, mainly from beech (Fagus sylvatica) and spruce (Picea abies), from May to October
are compared – whole year samples (including winter) are only available from Hesse. A total of 334 spider
species were recorded with these bark traps, i.e. about one third of the spider species known from Germany. On
average, each of the eight regions yielded 140.5 (± 26.2) species, each single tree 40.5 (± 12.2) species and 502 (±
452) adult spiders per season (i.e. May to Oct.). The 20 most abundant species are listed and characterised in detail.
Six of the 20 species were not known to be abundant on bark, three prefer conifers and three beech/broadleaf.
Even in winter (December-March) there was a remarkably high activity on the trunks. However, only a few species
occur exclusively or mainly in winter. Finally, the rarity of some bark spider species is discussed and details
(all known records in Germany, phenology) of four of them are presented (Clubiona leucaspis, Gongylidiellum edentatum,
Kratochviliella bicapitata, Oreonetides quadridentatus). The diversity and importance of the spider fauna on bark in Central
Europe is still underestimated.
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Die Sensillen auf den Antennen der Grabwespe Liris niger (Hymenoptera, Sphecidae)
(2006)
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Werner Gnatzy
Martin Jatho
- Im Vergleich zu der Vielzahl von Einzeluntersuchungen liegen nur für wenige Insektenarten (z.B. Manduca sexta: SHIELDS & HILDEBRANDT 1999 a, b; Drosophila: SHANBHAG et al. 1999, 2000) detaillierte Befunde zur Feinstruktur, Zahl und Topographie antennaler Sensillen vor. Die jetzt an Liris niger gewonnenen Daten bilden, zusammen mit solchen früherer Untersuchungen (GNATZY 1996, 2001; ANTON & GNATZY 1998; GNATZY & FERBER 1999) die Basis für derzeit laufende immuncytochemische und elektrophysiologische Arbeiten insbesondere am olfaktorischen System dieser solitären Grabwespenart. Dabei gilt unser Interesse dem ausgeprägten Sexualdimorphismus im antennalen Sensilleninventar, wie er im Verlauf dieser Untersuchungen nachgewiesen werden konnte.
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A Leafhopper Pest of Plants in the Mint Family, Eupteryx decemnotata Rey (Hemiptera: Auchenorrhyncha: Cicadellidae), Ligurian Leafhopper, New to North America
(2009)
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Alessandra Rung
Susan E. Halbert
David C. Ziesk
Raymond J. Gill
- The Ligurian leafhoppter, Eupteryx decemnotata Rey (Hemiptera: Auchenorrhyncha: Cicadellidae), is reported for the first time in North America (USA: Florida and California). Diagnostic characters for species identification, summary of hosts and damage, and U.S. known distribution are given.
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Erstfund von Hahnia picta (Araneae, Hahniidae) in Deutschland - mit Angaben zu Habitatpräferenz und Verbreitung
(2007)
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Karl-Hinrich Kielhorn
Theo Blick
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Nemastoma bidentatum (Arachnida: Opiliones: Nemastomatidae): neu für Deutschland und die Tschechische Republik
(2007)
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Axel Ludwig Schönhofer
Thomas Holle
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Mecidea longula Stål (Heteroptera: Pentatomidae: Pentatominae: Mecideini) is established in south Florida
(2010)
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Joseph E. Jr. Eger
Thomas T. Dobbs
- A Caribbean species of Mecidea Dallas, M. longula Stål, apparently established in south Florida, is reported from the United States for the first time. Specimens were first collected in February 2008 in a light trap operated in Miami-Dade County, Florida. Collections in that trap have continued through the present. Searches near the trap location resulted in several specimens being taken from smutgrass, Sporobolus indicus (L.), an exotic grass now established throughout much of the southeastern United States. The three North American species of Mecidea are keyed and illustrated. In addition to the Florida locality, M. longula is reported for the first time from the British Virgin Islands, St. Kitts, St. Martin, and the Turks and Caicos Islands.
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Die Sensillen auf den Antennen der Grabwespe Liris niger (Hymenoptera, Sphecidae)
(2006)
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Werner Gnatzy
Martin Jatho
- Im Vergleich zu der Vielzahl von Einzeluntersuchungen liegen nur für wenige Insektenarten (z.B. Manduca sexta: SHIELDS & HILDEBRANDT 1999 a, b; Drosophila: SHANBHAG et al. 1999, 2000) detaillierte Befunde zur Feinstruktur, Zahl und Topographie antennaler Sensillen vor. Die jetzt an Liris niger gewonnenen Daten bilden, zusammen mit solchen früherer Untersuchungen (GNATZY 1996, 2001; ANTON & GNATZY 1998; GNATZY & FERBER 1999) die Basis für derzeit laufende immuncytochemische und elektrophysiologische Arbeiten insbesondere am olfaktorischen System dieser solitären Grabwespenart. Dabei gilt unser Interesse dem ausgeprägten Sexualdimorphismus im antennalen Sensilleninventar, wie er im Verlauf dieser Untersuchungen nachgewiesen werden konnte.
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Leiobunum religiosum: neu für Deutschland (Arachnida: Opiliones)
(2008)
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Axel Ludwig Schönhofer
Jessica Hillen
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Walckenaeria simplex neu für Deutschland (Araneae, Linyphiidae)
(2008)
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Karl-Hinrich Kielhorn
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Neue Nachweise der Gerandeten Wasserspinne Dolomedes plantarius in Brandenburg (Araneae: Pisauridae)
(2009)
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Danilo Harms
Jason A. Dunlop
Karin Schütt
- The great raft spider, Dolomedes plantarius (Clerck, 1757), is a rare and endangered species in Germany and other European countries. Current data on its distribution and ecology are briefly reviewed. Five new (or overlooked) localities for this spider from the Spreewald-region of Brandenburg in eastern Germany are provided, together with an updated distribution map. One record, based on the authors’ own collections, is described and figured in detail, with the egg-carrying female discovered in reeds at the edge of a fairly large body of open water. Both direct and indirect protective measures for the habitats of this species in the Spreewald-region are recommended.
