• Publications
  • Influence
Phylogenomic Insights into the Evolution of Stinging Wasps and the Origins of Ants and Bees
There is unequivocal evidence that ants are the sister group to bees+apoid wasps (Apoidea) and that bees are nested within a paraphyletic Crabronidae, and that taxon choice can fundamentally impact tree topology and clade support in phylogenomic inference. Expand
Molecular phylogenetics of Vespoidea indicate paraphyly of the superfamily and novel relationships of its component families and subfamilies
This work collects molecular data from four nuclear genes and uses this topology as the best estimate of phylogeny at the family and subfamily levels of Vespoidea, and proposes a new classification of Aculeata that recognizes eight superfamilies. Expand
Illuminating the lack of consensus among descriptions of earth history data in the North American deserts: A resource for biologists
Understanding the timing of mountain building and desert formation events in western North America is crucial to understanding the evolutionary history of the diverse arid-adapted biota that is foundExpand
Repeated evolution in overlapping mimicry rings among North American velvet ants.
A large Müllerian mimicry complex in North American velvet ants (Hymenoptera: Mutillidae) is identified and it is found that 65 species in the velvet ant genus Dasymutilla can be placed into one of six morphologically distinct and geographically delimited mimicry rings. Expand
Identifying Pleistocene refugia in North American cold deserts using phylogeographic analyses and ecological niche modelling
It is suggested that during the cooling of the glacial periods, arid-adapted organisms were restricted to refugia in the Sonoran and Chihuahuan deserts, and should be considered a high conservation priority as important areas for maintaining species and genetic diversity. Expand
Cladistic analysis of the fire ants of the Solenopsis saevissima species‐group (Hymenoptera: Formicidae)
This phylogenetic hypothesis implies trends in fire ant evolution towards both polygyny (multiple egg‐laying queens per colony) and large major worker size, which is supported by a modified version of Emery's Rule. Expand
North American velvet ants form one of the world’s largest known Müllerian mimicry complexes
The extent of the velvet ant mimicry complex beyond Dasymutilla is investigated by examining distributional and color pattern similarities in all of the 21 North American diurnal velvet ant genera, including 302 of the 361 named species, as well as 16 polymorphic color forms and an additional 33 undescribed species. Expand
Preliminary morphological analysis of relationships between the spider wasp subfamilies (Hymenoptera: Pompilidae): revisiting an old problem
A quantitative analysis of phylogenetic relationships of the Pompilidae, with emphasis on testing the validity of proposed subfamilies, yielded a monophyletic Ceropalinae that was sister group to a large polytomy containing members of the remaining five subfam families. Expand
Müllerian Mimicry as a Result of Codivergence between Velvet Ants and Spider Wasps
The breadth of the Dasymutilla Müllerian mimicry complex is expanded and insights about how codivergence influenced the evolution of mimicry in these groups are provided. Expand