There are more described species of beetles (order Coleoptera) than any other group of organisms on the planet. With over 350,000 described extant and extinct species and subspecies, beetles represent about 40% of all described arthropods and about 25% of all described species.
One of the myriad families of beetles is Monotomidae, with over 250 described species . Commonly called minute clubbed beetles, the family includes such species as Europs frontalis (found primarily in the tropics) and Pycnotomina cavicolle (found exclusively in forested regions of eastern North America).
Dr. Thomas McElrath, Insect Collections Manager at the Illinois Natural History Survey, has been studying the systematics of Coleoptera for nine years. He is currently working on compiling a worldwide checklist of the Monotomidae. The Biodiversity Heritage Library is a crucial resource for his research on this project.