Rare or Threatened

[Vr.R.Bejsak-Colloredo-Mansfeld]

I would like to know how to categorize abundance of the insect.
 What is beetle like Papilio xy? Rare or Endangered?
 Is there any link between category like:
 Very common - Common - Very abundant - Abundant - Rare - Very rare -
 Sporadic
 and category like:
 Common - Vulnerable  - Threatened - Endangered - Critically Endangered???

 Is there any paper, publication dealing with this issues?

 Thank you very much for your help.
 Keep care and be of good cheer.

 Regards

 (name) Vratislav Richard Eugene Maria John Baptist
 (surname) of Bejsak (Bayshark)-Colloredo-Mansfeld

 website: http://www.coleoptera.org
 listserver: coleoptera on www.egroup.com/group/coleoptera/info.html
 Coleoptera - Australia, Tenebrionidae of World
 (incl. Lagriinae, Alleculinae)

 University of Sydney
 The Wentworth Bldg., Box 62
 NSW 2006
 AUSTRALIA
 phone  :  +61 414 540 465
 email: vratislav at bigfoot.com
            ricardo at ans.com.au
            (before Ricardo at compuserve.com
              and    ricardo at login.cz )

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