1. AMNH Arthropod Easy Capture Database. Release 2.9.0. American Museum of Natural History. 2003- [accessed 2021 Jan 18]. https://research.amnh.org/pbi/locality/.
2. [dataset] Hardy, Spencer, Leif L. Richardson, Michael Veit, Joan Milam, Mark Ferguson, Kent P. McFarland. 2021. "Species Account: Loosestrife Bees (Genus Macropis)" Vermont Atlas of Life Wild Bee Survey. Vermont Center for Ecostudies, 24 March 2021, 〈val.vtecostudies.org/projects/vtbees/macropis/〉.
3. [dataset]gbif.org. 2021a. Macropis nuda Occurrence Download. doi:10.15468/DL.3S5Q5Y. 〈https://www.gbif.org/occurrence/download/0230536–200613084148143〉.
4. [dataset]gbif.org. 2021b. Lysimachia ciliata Occurrence Download. doi:10.15468/DL.M3WJF4. 〈https://www.gbif.org/occurrence/download/0258073–200613084148143〉.
5. [dataset]Hengl T. 2018a. Sand content in % (kg / kg) at 6 standard depths (0, 10, 30, 60, 100 and 200 cm) at 250 m resolution. doi:10.5281/zenodo.2525662.