Please check back soon for updates! You can also visit the OSU Museum of Biological Diversity's crustacean collection website for more information.
Systematic revision of the devil crayfish (Cambarus diogenes) species
The goal of my Ph.D. dissertation is to investigate the devil crayfish (Cambarus diogenes) species complex using molecular systematics methods and morphometrics. The most iconic member of this complex is the devil crayfish, Cambarus diogenes (Girard 1852). Historically, all burrowing crayfishes that vaguely resembled the devil crayfish have been labeled as such. This lack of taxonomic resolution has led to the devil crayfish sensu lato being the most widespread crayfish in North America. However, it has long been suspected that the devil crayfish represents a species complex and in recent years, a handful of species have been described from within this complex. Further teasing apart the devil crayfish complex is important because some of the species within it may have actually have small ranges and require differential conservation attention.
December 2017 update: While there are still countless populations that I wish to sample to fill in my dataset, I have now collected specimens of all species in the now-suppressed subgenera Lacunicambarus and Tubericambarus from multiple sites, and have obtained preliminary results of my molecular work that appear to lend credence to my hypotheses regarding the group. I am working on obtaining data from additional loci, after which I will run additional analyses. This project remains as exciting as it was when I first began, and I cannot wait to share my findings, hopefully as early as mid to late 2018.