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

Sun Jan 29 22:02:50 GMT 2012

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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