Question

Distinguish between holotype and lectotype

Answer 1

holotype: The single physical example (or illustration) of an organism, known to be used when the taxon was formally described.

lectotype: A biological specimen or illustration later selected to serve as definitive type example of a species or subspecies when the original author of the name did not designate a holotype.

Answer 2

A lectotype is a specimen later selected to serve as the single type specimen for species originally described from a set of syntypes. In zoology, a lectotype is a kind of name-bearing type.

A holotype is a single physical example of an organism, known to have been used when the species was formally described. It is either the single such physical example or one of several such, but explicitly designated as the holotype.