In March of 2015, staff from HFF, River Continuum Concepts, and OreoHelix Consulting collected samples of aquatic invertebrates at five locations on the Henry's Fork. River Continuum Concepts has just completed identification of those invertebrates and a comparison of these new samples against a master list of all invertebrate types that HFF has collected in the Henry's Fork over the past 20 years. HFF's original list contained 125 different types; the new list contains 202, primarily as a result of adding finer levels of taxonomic classification to several important groups such as midges. Twenty-nine of the original types required some adjustments to account for misspellings, incorrect identifications in earlier work, and recent taxonomic changes. For example, Ephemerella infrequens,, one of the mayflies commonly known as the Pale Morning Dun, is now considered a subspecies of E. dorothea. A database of DNA barcodes specific to the Henry's Fork will be now developed based on this updated list. This database will allow us to quickly and efficiently process invertebrate samples in the future. See Rob's blog http://henrysfork.org/hff-adds-high-tech-invertebrate-sampling-water-quality-network for more information on this exciting project.