[Syrphidae] Efficiency of trapping methods for flowerflies

daniele sommaggio dsommaggio at tiscalinet.it
Fri Jun 3 00:35:46 BST 2005


    during the last few years I and Burgio compared Malaise trap and 
chromotropic trap (both with water and glue) in several different sites. In 
all case we note that the two tecniques are not similar. Malaise trap are 
much more efficency but they generally understimate some species and in 
particular Eristalis sp. and S. pipiens. Recently we tried also to used 
Symphyta as bioindicators in asssociation with hoverflies. Discussing with 
specialist from Italy, he confirmed that also on Symphyta populaton, Malaise 
trap understimate some genera, such as Macrophya, which show territoriality 
like in example in Ersitalis.


----- Original Message ----- 
From: "Francis Gilbert" <Francis.Gilbert at nottingham.ac.uk>
To: <syrphidae at nottingham.ac.uk>; <cthompson at sel.barc.usda.gov>
Sent: Wednesday, June 01, 2005 8:53 AM
Subject: Re: [Syrphidae] Efficiency of trapping methods for flowerflies

there are a number of studies done in Germany (and published in German) that 
specifically compare various trapping methods for syrphids, and also 
elsewhere in Europe. For example:-

Pompé T & Cölln K 1993 [ Malaise traps as a method of short-term faunal 
recording, illustrated by the hoverflies (Diptera, Syrphidae) of the 
district of Daun/Eifel ] Malaisefallen als Methode zur kurzfristigen 
Faunenerfassungdargestellt am Beispiel der Schwebfliegen (Diptera: 
Syrphidae) des Landkreises Daun/Eifel. Verhandlungen der westdeutscher 
Entomologentag. Düsseldorf. 1991 101-108

Precht A & Cölln K 1996 b [ On the specificity of location of Malaise-traps: 
a study on hoverflies (Diptera, Syrphidae) ] Zum Standortbezug von 
Malaise-Fallen: eine Untersuchung am Beispiel der Schwebfliegen (Diptera: 
Syrphidae) Fauna Flora Rheinland-Pfalz 8 449-508

Stollar S 1973 b [ The effectiveness of using the fixed Malaise trap for 
catching insects with special reference to the catching of hoverflies 
(Diptera, Syrphidae) ] 104-106 in Seminar on methods used in the study of 
Diptera of economic importance Z Radosova (ed) Prague (source RAE 62:4178) 
in Cz with a german summary

In English there is Henry Disney et al's work, that is very nice.
Disney RHL, Erzinclioglu Y, Henshaw D, Howse D, Unwin D, et al 1982 
Collecting methods and the adequacy of attempted faunal surveys, with 
reference to the Diptera Field Studies 5 607-621


Dr Francis Gilbert
(on sabbatical in Egypt from 25th Feb 2005)

Info: http://www.nottingham.ac.uk/biology/gilbert
Website http://www.nottingham.ac.uk/~plzfg
Egyptian-British Biological Society 
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