Current and Recent Past Projects
Spiders of the Arid Southwest
Project with David Allen Dean, Sandra Brantley and Bruce Cutler.
Biological control and arthropod associations of range weeds.
Keys to Salticidae
Project with Bruce Cutler and G. B. Edwards, also Clubionidae, Corinnidae, Liocranidae, Miturgidae, Tengellidae, Anyphaenidae and Zorocratidae (all with Darrell Ubick) for what was at first considered only an update of Roth's Spider Genera of North America. It became a whole new book Finished in 2004. Spiders of North America published in 2005
Spider biodiversity on the Jornada of New Mexico
With Sandra Brantley of the Museum of Southwestern Biology at the University of New Mexico
Revision of the genus Sassacus
This project is now finished after the examination of nearly 2000 specimens from around North America (British Columbia to Central America). A total of nine species were described of which three were new species from Mexico. One of the new species will eventually fall into a new genus associated with the South American "Sassacus" arcuatus group.
Spiders as predators of the Pecan Nut Case Bearer
Spiders as predators of introduced biocontrol agents on Saltcedar
Spiders may affect the success of a introduced beetle for the control of saltcedar in the western United States,