illustrations as lectotypes

[Bernard R. Baum, BRD, CLBRR]

In his reply James Reveal is perfectly correct with respect to Linnean
types. But, for post-Lineean types the situation is different in a number
of situations. In the case of a lectotype, if one of the specimens from
the type collection is found and if this specimen is in accord with the
description, it recommended that you re-lectotypify using this specimen.
A specimen takes precedence over an illustration.
I am replying to you from home and I do not have the Code at hand now; it
seems to me that the Code is quite clear on typifification, especially
the Tokyo Code which provides a guide as well for many situations, including
the one I mentioned.
Hope this helps.