Integrative taxonomy, combining data from multiple axes of biologically relevant variation, is
a major goal of systematics. Ideally, such taxonomies will derive from similarly integrative …

The origin and eventual loss of biogeographic barriers can create alternating periods of
allopatry and secondary contact, facilitating gene flow among distinct metapopulations and …

An accurate species‐level taxonomy is paramount for biogeographical research, and
conversely, biogeographical data are of importance for species delimitation. We here review …

Cryptic species are not diagnosable via morphological criteria, but can be detected through
analysis of DNA sequences. A number of methods have been developed for identifying …

Abstract Spotted and Northern Dusky Salamanders (Desmognathus conanti and D. fuscus)
have a long and complex taxonomic history. At least 10 other currently recognized species …

The “mountain” dusky is a charismatic ecomorph of Dusky Salamander (Desmognathus):
smaller (~ 20–50mm SVL), more terrestrial and montane woodland species, typically with …

Numerous mechanisms can drive speciation, including isolation by adaptation, distance,
and environment. These forces can promote genetic and phenotypic differentiation of local …

Evolutionary processes behind lineage divergence often involve multidimensional
differentiation. However, in the context of recent divergences, the signals exhibited by each …

Gene flow between diverging lineages challenges the resolution of species boundaries and
the understanding of evolutionary history in recent radiations. Here, we integrate …

A fundamental objective of evolutionary biology is to understand the origin of independently
evolving species. Phylogenetic studies of species radiations rarely are able to document …