I was about to say something similar but didn't have the courage to poke
my head above the parapet until encouraged by Rod's example. Surely many
local endemics, especially neoendemics, are likely to have evolved from
a more frequent species and thus be nested within it, even though they
might now be morphologically and even biologically "good species"?
Current treatment of molecular data doesn't appear to deal with this
situation very satisfactorily.
Dr C.D. Preston
Biological Records Centre,
CEH Maclean Building
Oxfordshire OX10 8BB
Tel (direct dial): 01491 692667
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