#1
that is auct. :
http://en.wikiped...i/Auctorum
Does that mean: it is valid species name, but
something named x auct. is realy y badly named as x, and that (missaplying) is done by many authors ?
Hope that my statement is not even more complicated than that on wiki (-:
#2
In zoology either it is a (commonly used?) misinterepretation or misidentification of a species name:
Musca complexa Linnaeus, 1758 sensu auct.
Musca complexa Linnaeus, 1758 misident. sensu auct.
Misidentification basically means that there is a type (or other material) that can pinpoint the exact identity of the species.
If such material does not exist it truely becomes a matter of interpretation of the description. In that case there can be opposing opinions and than you may have two 'species':
Musca complexa Linnaeus, 1758 sensu Fallén, 1810
Musca complexa Linnaeus, 1758 sensu auct. non Fallén, 1810