Schmidt, B. C. “Cryptic Species Among Bumblebee Mimics: an Unrecognized Hemaris Hawkmoth (Lepidoptera: Sphingidae) in Eastern North America”. Zootaxa, vol. 4399, no. 1, Mar. 2018, pp. 32–48, doi:10.11646/zootaxa.4399.1.2.