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Current status of the Myriapod class diplopoda (millipedes): taxonomic diversity and phylogeny.
TLDR
The first combined morphological and molecular analysis of the millipede orders is presented, and a list of critically evaluated characteristics of nominal clades identifying putative apomorphies is presented.
A Reconsideration of the Classification of the Spider Infraorder Mygalomorphae (Arachnida: Araneae) Based on Three Nuclear Genes and Morphology
TLDR
A reevaluation of mygalomorph phylogeny using the rRNA genes 18S and 28S, the nuclear protein-coding gene EF-1γ, and a morphological character matrix proposes a “road map” for future sampling across the infraorder with the aim of solving many remaining questions that hinder mygalomorphic systematics.
Spider phylogenomics: untangling the Spider Tree of Life
TLDR
Contrary to long held beliefs that the orb web is the crowning achievement of spider evolution, ancestral state reconstructions of web type support a phylogenetically ancient origin of the orbweb, and diversification analyses show that the mostly ground-dwelling, web-less RTA clade diversified faster than orb weavers.
Species Delimitation and Phylogeography of Aphonopelma hentzi (Araneae, Mygalomorphae, Theraphosidae): Cryptic Diversity in North American Tarantulas
TLDR
The use of numerous species delimitation methods, in concert, provide an effective approach to dissecting species boundaries in this spider group, and seem to provide strong evidence for a number of nominal, previously undiscovered, and cryptic species.
Deep molecular divergence in the absence of morphological and ecological change in the Californian coastal dune endemic trapdoor spider Aptostichus simus
TLDR
It is suggested that species concepts based on morphological distinctiveness, in spider groups with limited dispersal capabilities, probably underestimate true evolutionary diversity.
An integrative method for delimiting cohesion species: finding the population-species interface in a group of Californian trapdoor spiders with extreme genetic divergence and geographic structuring.
Here we present an objective, repeatable approach to delineating species when populations are divergent and highly structured geographically using the Californian trapdoor spider species complex
TESTING ADAPTIVE RADIATION AND KEY INNOVATION HYPOTHESES IN SPIDERS
  • J. Bond, B. Opell
  • Biology
    Evolution; international journal of organic…
  • 1 April 1998
TLDR
Testing the hypothesis that adaptive radiation and key innovation have contributed to the diversity of the order Araneae shows that the inequality in diversity between the Deinopoidea and the AraneoideA is significant, and that it is associated with the replacement of primitive cribellar capture thread by viscous adhesive thread and a change from a horizontal to a vertical orb‐web orientation.
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