[Syrphidae] Efficiency of trapping methods for flowerflies

Mark van Veen mp.van.veen at hccnet.nl
Fri Jun 3 11:04:09 BST 2005


Although it is only a one time field experience, I have been sitting near a malaise trap for a couple of hours once. It was instructive to see that some of the bigger flies (for example Eristalis, but also larger Muscidae, Tachinidae and Sarcophagidae) just use the trap as a landing place and lookout. They sit on the trap in number, but fly away just as easy. My impression (not evidence) was that particularly flies that wander through the vegetation are caught.

Mark van Veen

On Do, 2 juni, 2005 23:35, daniele sommaggio zei:
> Hello
> 
> 
> 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.
> 
> 
> Daniele
> 
> 
> ----- 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
> 
> 
> 
> Francis
> 
> 
> 
> 
> 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
> http://www.nottingham.ac.uk/~plzfg/EBBSoc/ebbsoc.html
> Syrphid Email Discussion
> http://lists.nottingham.ac.uk/mailman/listinfo/syrphidae
> 
> 
> 
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