Status of the Rare insect.

Robin Leech releech at TELUSPLANET.NET
Sat Mar 16 19:53:48 CST 2002


It is because most so-called "rare" or "very rare" species are usually
artifacts of collecting.  That is, numerous beetle people, for example, can
be trying to collect species X and Y, but no one ever turns up more than 1
or 2 per year.  Collections then reflect this apparent paucity of
individuals of species X and Y.
All it takes is one person to luck out, or stumble onto a number of
specimens, and in one moment collect more than have ever been collected
before to alter an apparent status of "rare" to common.
Keep in mind that if one person finds one specimen of X or Y at a location,
then others "psych" the location and continue to look in other places that
have a similar habitat.  In reality, the individual specimens caught may
have been on the edges of their distribution, late or early for their
seasons, needing more or less humidity, happen-chance landed there and were
caught, etc.
Factors are such things as collecting technique, thoroughness of collecting,
where people have been looking, time of year, peculiarities of a particular
season,  etc.
I can cite several examples for beetles and spiders.
In other words, "rare" and "very rare" are museum terms, and not necessarily
reality tems.
Robin Leech


----- Original Message -----
From: "Vr. Richard Bejsak-Colloredo-Mansfeld" <ricardo at ANS.COM.AU>
To: <TAXACOM at USOBI.ORG>
Sent: Saturday, March 16, 2002 5:46 PM
Subject: Status of the Rare insect.


> Dear colleagues,
> I know that to give a status to for example beetles, like: common, rare,
> very rare etc is not used anymore in any recent publication.
>  I would like to know why?
> It is not recommended by government bodies?
> Could presence of very rare insect stop development / destruction of the
> site?
>
> Keep care and be of good cheer
>
> Regards
>
> (name) Vratislav Richard Eugene Maria John Baptist
> (surname) of Bejsak (Bayshark)-Colloredo-Mansfeld
> (title) 84 duke of Siebenlügner
>
> websites:
> http://www.coleoptera.org. and
> http://www.egroups.com/group/coleoptera
>
> University of Sydney
> The Wentworth Bldg., B 62
> NSW 2006
> AUSTRALIA
> phone  :  +61 414 540 465
> email: vratislav at bigfoot.com
> ICQ: 13610107
>
> Only after the last tree has been cut down,
> only after the last river has been poisoned,
> only after the last fish has been caught,
> only then will you find that money can not be eaten.'
>         CREE INDIAN PROPHECY.
>
> Incoming  mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).




More information about the Taxacom mailing list