Gustav L. Mayr (12 October 1830 – 14 July 1908) was an Austrian entomologist and professor in Budapest and Vienna. He specialised in Hymenoptera, being particularly known for his studies of ants.[1]
In 1868, he was the first to describe the Argentine ant.[2] He is credited with naming the harvesting ant species, Aphaenogaster treatae, for naturalist Mary Davis Treat, in honor of her research on the species.[3]