Cryptic species are groups of two or more taxa that were previously classified as single
nominal species. Being almost morphologically indistinguishable, cryptic species have …

A recent revision of the anacondas (Serpentes: Boidae: Eunectes), with the description of a
new species of green anaconda, generated extensive publicity, but also provoked …

In cryptic amphibian complexes, there is a growing trend to equate high levels of genetic
structure with hidden cryptic species diversity. Typically, phylogenetic structure and distance …

Significant advances have been made in species delimitation and numerous methods can
test precisely defined models of speciation, though the synthesis of phylogeography and …

Abstract Background The 16S mitochondrial rRNA gene is the most widely sequenced
molecular marker in amphibian systematic studies, making it comparable to the universal …

Abstract Dusky Salamanders (genus Desmognathus) currently comprise only 22 described,
extant species. However, recent mitochondrial and nuclear estimates indicate the presence …

The biota of Sulawesi is noted for its high degree of endemism and for its substantial levels
of in situ biological diversification. While the island's long period of isolation and dynamic …

As genomic data proliferates, the prevalence of post-speciation gene flow is making species
boundaries and relationships increasingly ambiguous. Although current approaches …

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 …

Systematics and taxonomy are the backbone of all components of biology and ecology, yet
cryptic species present a major challenge for accurate species identification. This is …