The Ouellet-Robert Entomological Collection (coden: QMOR), housed at the University of Montreal's Biodiversity Center, contains 1.5 million specimens of insects, arachnids, and other terrestrial arthropods. Approximately 500,000 are dry specimens, 1 million are preserved in ethanol in 40,000 glass vials, and a few microscope slides complete the total. Of the ~20,000 species housed in the collection, half are recorded from the Canadian province of Quebec. A vast majority of the material is from Quebec and dates to the 20th Century. Beetles, bees, and the aquatic orders of insects are taxonomic strengths.