[Syrphidae] Re : Re: Re : Publication of the winter of hoverflies

Tue Jan 31 19:51:45 GMT 2012

Hello every one,

I have carefully read your messages and I found your comments informative. Frankly thank you for the interest paid to my request.
I am very impressed !

with best wishes

Pierre

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________________________________

Pierre MILLE 
3 avenue des buttes blanches
95220 Herblay - France

>________________________________
>De : Frank Van de Meutter <Frank.VandeMeutter at bio.kuleuven.be>
>À : pieter vantieghem <pvtlvd at yahoo.com>; Hoverfly discussion list <syrphidae at lists.nottingham.ac.uk> 
>Envoyé le : Lundi 30 janvier 2012 8h40
>Objet : [Syrphidae] Re: Re : Publication of the winter of hoverflies
>
>
>In support of what Wouter and Pieter have written: in the very mild winter of 2007 I have seen Episyrphus balteatus in every decade of the winter months. While in every other winter I only see female episyrphus after end november, I have counted approx. 1/3 of males among the Episyprhus at avery occasion in that particular winter well into March, after which densities declined dramatically. 
> 
>Whether it are overwintering females that produce the May generation of Episyrphus, or whether they also overwinter as larvae, or if they can arrive from the south by that time is unclear to me (and I am not into that kind of literature).
> 
> 
>Frank
>
>________________________________
>
>Van: syrphidae-bounces at lists.nottingham.ac.uk [syrphidae-bounces at lists.nottingham.ac.uk] namens pieter vantieghem [pvtlvd at yahoo.com]
>Verzonden: zondag 29 januari 2012 23:21
>Aan: Hoverfly discussion list
>Onderwerp: [Syrphidae] Re: Re : Publication of the winter of hoverflies
>
>
>In an extremely mild start of the winter in Belgium with almost no days with negative temperatures, I had 3 adult E. tenax freshly emerged from a wet manure storage at a farm on the 20th of december, 2 males and 1 female. An observation confirming the hypothesis of Wouter.
>
>
>
>
>ys
>Pieter Vantieghem
>
>
>
>
>________________________________
>From: Wouter van Steenis <w.v.steenis at casema.nl>
>To: Hoverfly discussion list <syrphidae at lists.nottingham.ac.uk> 
>Sent: Sunday, January 29, 2012 11:02 PM
>Subject: [Syrphidae] Re: Re : Publication of the winter of hoverflies
>
>
>Dear all,
>
>considering overwintering Syrphidae, I’m getting more and more convinced that no European species has this overwintering as adult as only strategy. In my opinion it always are species that have many generations a year and more generations in warmer climates than in colder climates. All these species you might find on the wing in winter in the Mediterranean. In more temperate areas they will get less and less active with dropping temperatures. Both males and females will start sheltering somewhere in colder periods. As long as temperatures (or other circumstances?) are not to bad, most will survive. Eventually most will die, males much faster than females. At the end of winter only few will still survive, all of them females. Whether they have offspring or not I don’t know.
>I remember that someone has written on this subject regarding Eupeodes corollae somewhere in Germany. It fits well with all species people listed: Scaeva selenitica, S. pyrastri, Eristalis tenax, Episyrphus balteatus. You will find males and females in late autumn, often much more females than males. And in spring you only find females, at least in the Netherlands. And these species are also the most abundant migrating species. Eristalinus aeneus also hibernates as adult in the Netherlands. It has several generations a year, but I am not sure whether E. aeneus migrates regularly.
>
>Best wishes 
>
>Wouter
>
>From: Pierre MILLE 
>Sent: Friday, January 27, 2012 1:47 PM
>To: Hoverfly discussion list 
>Subject: [Syrphidae] Re : Publication of the winter of hoverflies
>Hello every one,
> 
>Let me ask you because I like to know if there is publication on the hoverflies that would be able to spend the winter as adults. 
> 
>Is it a rare or known ? Does research have been done about it ?
> 
>Best wishes
> 
>Pierre
>
>
>________________________________
>
>
>________________________________
>
>Pierre MILLE 
>3 avenue des buttes blanches
>95220 Herblay - France
>________________________________
>
>
>________________________________
>
> 
>
>
>>________________________________
>>De : Frank Van de Meutter <Frank.VandeMeutter at bio.kuleuven.be>
>>À : Hoverfly discussion list <syrphidae at lists.nottingham.ac.uk> 
>>Envoyé le : Vendredi 27 janvier 2012 8h55
>>Objet : [Syrphidae] Re: Re : Pipizella paper
>>
>>Hallo Jeroen,
>>
>>je zonnet.nl adres bounced (mailbox vol) dus dan maar ook via de maillijst. Hopelijk krijg je dit wel toe?
>>Voor mij ook een exemplaar. Heel leuk overigens dat je het werk van Jan Lucas afmaakt.
>>
>>
>>groeten,
>>
>>Frank
>>
>>________________________________________
>>Van: syrphidae-bounces at lists.nottingham.ac.uk [syrphidae-bounces at lists.nottingham.ac.uk] namens ruud van der weele [rvanderweele at gmail.com]
>>Verzonden: donderdag 26 januari 2012 9:24
>>Aan: Pierre MILLE; Hoverfly discussion list
>>Onderwerp: [Syrphidae] Re: Re : Pipizella paper
>>
>>Yes, and your name is in Dutch "Piet"!
>>
>>I admit it is childish!
>>
>>
>>Ruud
>>
>>2012/1/26 Pierre MILLE <mille_pierre at yahoo.fr>:
>>> Hello Jeroen,
>>>
>>> In French, your name is Jerome :)
>>>
>>> If you agree send me a copy of your article, I will receive it by email.
>>>
>>> Best wishes
>>>
>>> Pierre
>>>
>>>
>>> Pierre MILLE
>>> 3 avenue des buttes blanches
>>> 95220 Herblay - France
>>>
>>>
>>>
>>>
>>> De : Jeroen van Steenis <j.van.steenis at xmsnet.nl>
>>> À : syrphidae at lists.nottingham.ac.uk
>>> Envoyé le : Mercredi 25 janvier 2012 14h37
>>> Objet : [Syrphidae] Pipizella paper
>>>
>>> Dear All
>>>
>>> My paper "Steenis, J. van and Lucas, J.A.W. 2011. Revision of the
>>> West-Palaearctic species of Pipizella Rondani, 1856 (Diptera, Syrphidae)
>>> Dipterists Digest 2011 18, 127-180" is out.
>>>
>>> It is a large paper and takes about 4 Mb in two separate PDF files. Anyone
>>> interested can reply to me and I will send it personally.
>>>
>>> Best wishes, Jeroen.
>>>
>>>
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>>
>>
>>
>>--
>>Ruud van der Weele
>>rvanderweele at gmail.com
>>
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>>
>>
>
>This message and any attachment are intended solely for the addressee and may contain confidential information. If you have received this message in error, please send it back to me, and immediately delete it. Please do not use, copy or disclose the information contained in this message or in any attachment. Any views or opinions expressed by the author of this email do not necessarily reflect the views of the University of Nottingham. 
>This message has been checked for viruses but the contents of an attachment may still contain software viruses which could damage your computer system: you are advised to perform your own checks. Email communications with the University of Nottingham may be monitored as permitted by UK legislation. 
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>This message and any attachment are intended solely for the addressee and may contain confidential information. If you have received this message in error, please send it back to me, and immediately delete it.   Please do not use, copy or disclose the information contained in this message or in any attachment.  Any views or opinions expressed by the author of this email do not necessarily reflect the views of the University of Nottingham.
>
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>This message and any attachment are intended solely for the addressee and may contain confidential information. If you have received this message in error, please send it back to me, and immediately delete it.  Please do not use, copy or disclose the information contained in this message or in any attachment.  Any views or opinions expressed by the author of this email do not necessarily reflect the views of the University of Nottingham.
>
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>This message and any attachment are intended solely for the addressee and may contain confidential information. If you have received this message in error, please send it back to me, and immediately delete it.  Please do not use, copy or disclose the information contained in this message or in any attachment.  Any views or opinions expressed by the author of this email do not necessarily reflect the views of the University of Nottingham.
>
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