A new Pintalia species from Costa Rica (Hemiptera: Fulgoromorpha: Cixiidae)

Eine neue Cixiidae-Art, Pintalia hannae nov. spec., wird aus den Regenwäldern der Cordillera Talamanca und des südlichen (pazifischen) Teils von Costa Rica beschrieben. Die Art ist leicht an ihrer auffälligen Färbung zu erkennen: Kopf und Thorax sind leuchtend orange, die Vor-derflügel-Ränder sind entlang des Clavus breit weiß, die übrigen Vorderflügel gelblich-stroh-farben mit nur wenigen dunkleren Flecken. A new Cixiidae species, Pintalia hannae nov. spec., is described from rainforests of the Cordillera Talamanca and the southern (Pacific) part of Costa Rica. The species is easily recognised by its stunning colouration: Head and thorax are bright orange, the forewing mar-gins are broad white along the clavus, and the remaining forewings are yellowish-straw col-oured with only a few darker spots.&nbsp

Semiquantitative Kescherfänge zur Zikadenerfassung: Wie viele Kescherschläge sind mindestens erforderlich und welchen Einfluss hat der Faktor „Mensch“ auf das Ergebnis?

Kescherfänge mit definierter Schlagzahl sind eine oft eingesetzte Methode, um (semi)quantitative Daten zur Zikadenfauna von Grünlandlebensräumen zu erhalten. Die vorliegende Arbeit beschäftigt sich mit zwei Fragen: Wie erheblich werden die Ergebnisse durch subjektive Charakteristika des Sammlers und des Keschers beeinflusst? Wie viele Kescherschläge sind erforderlich, damit die Probe ein repräsentatives Bild der tatsächlichen Artengemeinschaft widergibt? Hierfür wurden im August 2004 in einer großen, homogenen Mähwiese in Wien (Österreich) von 15 Wissenschaftlern je 3 Kescherfänge zu je 50 Schlägen durchgeführt und parallel dazu mit zwei Bodensaugern (G-Vac) je drei Saugproben zu 50 Punkten genommen. 2.373 adulte Zikaden aus 40 Arten wurden nachgewiesen. Statistische Analysen ergaben, dass die Zahl der gesammelten Arten überwiegend von der Zahl der Kescherschläge abhängt. Erst bei etwa 100 Doppelkescherschlägen sind die dominanten Arten fast stets vollständig und die rezedenten Arten mit hoher Wahrscheinlichkeit in einer Probe präsent. Es wird daher empfohlen, diese Zahl als Minimalstandard bei der Bearbeitung ökologischer und naturschutzfachlicher Fragestellungen heranzuziehen. Die weiteren geprüften Parameter erklären nur einen sehr kleinen Teil der Varianz. Die Einflüsse der Faktoren „Mensch“ (Körpergröße, Gehgeschwindigkeit, Kescherführung...) und „Keschertyp“ (Größe, Form) sind bei erfahrenen Bearbeitern und bei Einhaltung eines standardisierten „Kescherprotokolls“ daher vernachlässigbar.Quantitative sweepnet samples: How many beats are necessary and which influence has the “human factor”? – Quantitative sweepnetting is a common method to collect data on Auchenorrhyncha communities in grassland and agricultural ecosystems. In this paper we adress two questions concerning this method: (a) What is the impact of the sampler and of the net dimensions on the results? (b) How many beats do you need to get a representative spectrum of the species community? In August 2004 we performed a “sweepnet sampling experiment” with 17 Auchenorrhyncha experts on a large meadow in Vienna (Austria). 15 persons collected 3 samples each, with 50 sweepnet beats per sample. Another two sample series (= 6 samples) were gained by G-Vac. A total of 2.373 adult specimens representing 40 species were collected. The number of species (and specimens) depends mainly on the number of sweepnet beats. About 200 beats are necessary to gain a representative spectrum of the species assemblage. Thus we recommend to accept this number as the minimum standard for quantitative sweepnet samples. In relation to the influence of the number of beats, both “human factor” (individal way/efficiency of sampling) and shape and dimensions of the sweepnet are neglectable parameters. They have a high statistical spreading together with a very low correlation to species and specimens numbers

Extreme 13C depletion of CCl2F2 in firn air samples from NEEM, Greenland

A series of 12 high volume air samples collected from the S2 firn core during the North Greenland Eemian Ice Drilling (NEEM) 2009 campaign have been measured for mixing ratio and stable carbon isotope composition of the chlorofluorocarbon CFC-12 (CCl2F2). While the mixing ratio measurements compare favorably to other firn air studies, the isotope results show extreme 13C depletion at the deepest measurable depth (65 m), to values lower than d13C = -80‰ vs. VPDB (the international stable carbon isotope scale), compared to present day surface tropospheric measurements near -40‰. Firn air modeling was used to interpret these measurements. Reconstructed atmospheric time series indicate even larger depletions (to -120‰) near 1950 AD, with subsequent rapid enrichment of the atmospheric reservoir of the compound to the present day value. Mass-balance calculations show that this change is likely to have been caused by a large change in the isotopic composition of anthropogenic CFC-12 emissions, probably due to technological advances in the CFC production process over the last 80 yr, though direct evidence is lacking

15 Jahre Arbeitskreis Zikaden Mitteleuropas

The „Arbeitskreis Zikaden Mitteleuropas“ was founded in 1994 as an informal research group, then became part of the DGaaE (German association for general and applied entomology) and in 2007 an incorporated society for itsown. The society organized 15 meetings; 117 talks and posters were presented, and the meetings werde attended by a total of 119 researchers from 18 countries. Main objectives of the society are the promotion and support of research and publications concerning taxonomy, identification, chorology and ecology of Auchenorrhyncha and Psyllina.The „Arbeitskreis Zikaden Mitteleuropas“ was founded in 1994 as an informal research group, then became part of the DGaaE (German association for general and applied entomology) and in 2007 an incorporated society for itsown. The society organized 15 meetings; 117 talks and posters were presented, and the meetings werde attended by a total of 119 researchers from 18 countries. Main objectives of the society are the promotion and support of research and publications concerning taxonomy, identification, chorology and ecology of Auchenorrhyncha and Psyllina

Editorial

Memorial volume 2 for Reinhard Reman

Acanalonia conica (Say, 1830) and three other true hopper species new for Austria (Hemiptera: Auchenorrhyncha)

Acanalonia conica (Say, 1830) und drei weitere Zikadenarten neu für Österreich (Hemiptera: Auchenorrhyncha). – Drei Neozoen, Acanalonia conica (Say, 1830), Aplos simplex (Germar, 1830) und Hishimonus hamatus Kuoh, 1976 wurden in einer Gärtnerei in Graz erstmals für Österreich nachgewiesen. Sie wurden wahrscheinlich mit Ziersträuchern aus Italien importiert. Ein weiterer Erstnachweis betrifft Chiasmus conspurcatus (Perris, 1857). Diese Art ist heimisch und wurde an zwei Salzlacken des Nationalparks Neusiedlersee-Seewinkel nachgewiesen. Eine Gesamtliste jener 71 Zikadenarten, die an den beiden Lacken gefunden wurden, wird ebenfalls vorgelegt.  Acanalonia conica (Say, 1830), Aplos simplex (Germar, 1830) and Hishimonus hamatus Kuoh, 1976 are three alien species reported for the first time from Austria. They were found in a garden centre in Graz and presumably imported with ornamental shrubs from Italy. Another first record is Chiasmus conspurcatus (Perris, 1857), an indigenous species found in the Neusiedlersee-Seewinkel National Park. In addition, we present a list of 71 Auchenorrhyncha species found at the two inland salt marshes, where C. conspurcatus occurs

New insights in the global cycle of acetonitrile: release from the ocean and acetonitrile: release from the ocean and Venezuela

International audienceCUsing the proton transfer reaction mass spectrometry (PTR-MS) technique, acetonitrile was measured during the wet season in a Venezuelan woodland savanna. The site was located downwind of the Caribbean Sea and no biomass burning events were observed in the region. High boundary layer concentrations of 211 ±36 pmol/mol (median, ± standard deviation) were observed during daytime in the well mixed boundary layer, which is about 60 pmol/mol above background concentrations recently measured over the Mediterranean Sea and the Pacific Ocean. Most likely acetonitrile is released from the warm waters of the Caribbean Sea thereby enhancing mixing ratios over Venezuela. Acetonitrile concentrations will probably still be much higher in biomass burning plumes, however, the general suitability of acetonitrile as a biomass burning marker should be treated with care. During nights, acetonitrile dropped to levels typically around 120 pmol/mol, which is consistent with a dry deposition velocity of ~0.14 cm/s when a nocturnal boundary layer height of 100 m is assumed

Matija Gogala celebrates his 77th birthday

Matija Gogala celebrates his 77th birthday on December 11th 2014. He is among the pioneer researchers of modern insect physiology and bioacoustics not only in Europe, but also worldwide. The authors and the „Arbeitskreis Zikaden“ congratulate him warmly and wish him many good and busy years to come, and most of all, many more exiting days in the field that keep him busy