L. occidentalis may refer to: Leptochilus occidentalis, a wasp species in the genus Leptochilus Leptoglossus occidentalis, the western conifer seed bug, a true bug species native to California, Oregon and Nevada, United States Leptotyphlops occidentalis, the Western thread snake Linderiella occidentalis, the California fairy shrimp, a shrimp species native to California Lepisosteus occidentalis, a gar that lived from the late Cretaceous to Eocene. See also List of Latin and Greek words commonly used in systematic names#O