Marshall, C.J. 2018. Two new species of rain beetle (Coleoptera: Pleocomidae: Pleocoma Le Conte, 1856) in the Pacific Northwest of the United State of America . Zootaxa. 4471, 2 (Sep. 2018), 387–395. DOI:https://doi.org/10.11646/zootaxa.4471.2.12.