Species are a fundamental unit for biological studies, yet no uniform guidelines exist for
determining species limits in an objective manner. Given the large number of species …

DNA barcoding has focused increasing attention on the use of specific regions of
mitochondrial cytochrome c oxidase I and II genes (COI–COII) to diagnose and delimit …

Abstract The North American tarantula genus Aphonopelma provides one of the greatest
challenges to species delimitation and downstream identification in spiders because …

Here we present an objective, repeatable approach to delineating species when
populations are divergent and highly structured geographically using the Californian …

Diversity of ants of the Tetramorium caespitum/impurum complex was investigated in a
multidisciplinary study. Focusing on morphologically hardly distinguishable Western …

Coalescent model–based methods for phylogeny estimation force systematists to confront
issues related to the identification of species boundaries. Unlike conventional phylogenetic …

Background The infraorder Mygalomorphae (ie, trapdoor spiders, tarantulas, funnel web
spiders, etc.) is one of three main lineages of spiders. Comprising 15 families, 325 genera …

Background The primary objective of this study is to reconstruct the phylogeny of the hentzi
species group and sister species in the North American tarantula genus, Aphonopelma …

This systematic study documents the taxonomy, diversity, and distribution of the tarantula
spider genus Aphonopelma Pocock, 1901 within the United States. By employing …

The field of systematics involves at least three major elements: biodiversity exploration
(inventory); taxonomic discovery and description (taxonomy); and the estimation of …