[Syrphidae] FW: Sympatry in Sphaerophoria

Francis Gilbert Francis.Gilbert at nottingham.ac.uk
Mon Sep 14 14:58:34 BST 2020


From: Frank Van de Meutter [mailto:frank.vandemeutter at kuleuven.be]
Sent: 14 September 2020 14:47
To: ximo mengual sanchis <xmengual at gmail.com>; Hoverfly discussion list <syrphidae at lists.nottingham.ac.uk>
Subject: Re: [Syrphidae] Sympatry in Sphaerophoria


Strange - the head of the mail seems to be missing.

It said that we in Belgium do have sites where all species co-occurr and can be caught on the same date - but such sites are often mixtures themselves of habitats eg acidic grasslands with Calluna heath next to rivers with more lush vegetation.

cheers

Frank

________________________________
Van: Frank Van de Meutter
Verzonden: maandag 14 september 2020 15:02
Aan: ximo mengual sanchis; Hoverfly discussion list
Onderwerp: Re: [Syrphidae] Sympatry in Sphaerophoria


But all have some specific requirements:

S. taeniata: both wet and dry grasslands, (eutrophic) mesotrophic to oligotropic types, both grazed and mown etc. Quite wide ecological amplitude, widespread in Belgium

S. scripta: everywhere but less in forested areas, high numbers in open, dry nature types (dunes, agricultural land, disturbed areas,...)



The species below are all species that are confined to natural areas, often reserves, and large more or less permanent forest systems.

S. virgata: in nothern Belgium only on large heathlands, in southern Belgium both heathlands and clearings or permanent open areas in forest (Calluna may be present but not always)

S. philanthus: unimproved, moist acidic grasslands often with some Calluna etc Often present in heathlans but its presence is mostly confined to patches of acidic grassland. Likewise occurs in raised bogs and peat moors where such grasslands occur at the edges.

S. fatarum. True heathland species - I have never seen it away from Calluna heath.

S. interrupta: in drier climatic areas in Belgium confined to wet unimproved grasslands in small river valleys. In areas with high rainfall (and most grasslands therefore of some more or less permanent wet nature) widespread in unimproved grasslands, but not the short grassland type of philanthus - rather a more lush type with tall herbs



cheers

Frank​



________________________________
Van: syrphidae-bounces at lists.nottingham.ac.uk<mailto:syrphidae-bounces at lists.nottingham.ac.uk> <syrphidae-bounces at lists.nottingham.ac.uk<mailto:syrphidae-bounces at lists.nottingham.ac.uk>> namens ximo mengual sanchis <xmengual at gmail.com<mailto:xmengual at gmail.com>>
Verzonden: zondag 13 september 2020 08:12
Aan: Hoverfly discussion list
Onderwerp: [Syrphidae] Sympatry in Sphaerophoria

Dear all,

I have a question regarding Sphaerophoria. Based on my field experience, I would say that usually more than one Sphaerophoria species occur in the same locality.

I am interested on S. taeniata, virgata, scripta, interrupta and philantha. Can someone tell me if they are sympatric?

I collected in the same place scripta and taeniata, for example. Is it the same for philantha and virgata? or taeniata and interrupta?

Cheers,

Ximo

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