[Nhcoll-l] spiders

Sat Nov 3 08:02:12 EDT 2018

Certainly we get many spiders coming indoors at the time of the year in the UK.  Most of them are males and it could be that they feel the first nip of winter and know that their end is near (males don’t live beyond one adult season and then nature kills them off!) so they come indoors seeking warmer (but drier) solace!  Just a theory.

With all good wishes, Simon.

Simon Moore MIScT, RSci, FLS, ACR
Conservator of Natural Sciences and Cutlery Historian, 

www.natural-history-conservation.com 

> On 2 Nov 2018, at 19:33, Czerwinski, Elisabeth <Elisabeth.Czerwinski at burnaby.ca> wrote:
> 
> Hi Fiona,
>  
> Could it be that there are just more spiders here (or visibly here) in the Fall? 
>  
> Also and more importantly, at the PCG last week, Simone Vogel-Horridge gave a talk about terrible paperfish (like the well-known silverfish, but bigger and harder to kill and able to live nicely at lower levels of RH). Apparently there is a type of spider that does a very nice job of eating these pests… she tested various spiders that she collected herself.  The woman is strong. Maybe the spiders are doing you a favour.
>  
> Liz
> Elisabeth Czerwinski
> Conservator
>  
> Burnaby Village Museum
> 6501 Deer Lake Ave,
> Burnaby, B.C.
>  
> 604 297 4553 <tel:604%20297%204553>
>  
>  
>  
>  
> From: Nhcoll-l [mailto:nhcoll-l-bounces at mailman.yale.edu <mailto:nhcoll-l-bounces at mailman.yale.edu>] On Behalf Of Christian Baars
> Sent: November-01-18 3:40 PM
> To: Fiona Hernandez; nhcoll-l at mailman.yale.edu <mailto:nhcoll-l at mailman.yale.edu>
> Subject: Re: [Nhcoll-l] spiders
>  
> Hi Fiona,
>  
> Many spider species wander far and wide in search of prey, and especially so during the autumn when they look for somewhere to spend the winter. I would be less worried about potential pest populations (you would pick most of them up in your pest monitors) but building defects: the spiders are entering the building through cracks, gaps, broken window panes and gaps underneath exterior doors. These, in turn, can cause other problems: damp and cold spots, leading to localised mould problems; the fact that you have booklice hints that there may be a mould problem somewhere, because booklice feed on mould.
>  
> Besides, whilst spiders may appear to be welcome because they could prey on pests, eventually the spiders themselves will die somewhere in a corner and then provide a lovely snack for something else – perhaps a little stop over for a woolly bear to give it enough energy to make it into your taxidermy collection. Anthrenus and Reesa larvae love the abdomens of large spiders.
>  
> I would check the integrity of the building envelope if I had large numbers of spiders entering the building.
>  
> Best wishes
> Christian 
>  
>  
> Dr Christian Baars ACR
> Senior Preventive Conservator
> National Museum Cardiff
>  
>  
>  
>  
> From: Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu <mailto:nhcoll-l-bounces at mailman.yale.edu>> On Behalf Of Fiona Hernandez
> Sent: 01 November 2018 20:59
> To: nhcoll-l at mailman.yale.edu <mailto:nhcoll-l at mailman.yale.edu>
> Subject: [Nhcoll-l] spiders
>  
> Is there such a thing as too many spiders in collections storage areas? We have recently had a noticeable bump in spider populations in our storage. no signs of collections pests in the traps, except booklice. Should we be worried? Would it mean we may have a bump in spider prey? I am glad they are around to eat insects, but they seem to be getting much more numerous and physically large….
>  
> Fiona Hernandez
> Conservator
> Museum of Vancouver
> 1100 Chestnut Street
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